Egyéb elektromos berendezések és kellékek

SMD Switches Black Red Brown Blue Clear Green Yellow 3pins Switch for Mechanical Keyboard Switch
 
Description
Red technical data
Total stroke: 400mm
Conduction stroke: 2.00 ± 06mm
Conduction force: 45 ± 10GF
Minimum trigger force: 30gf min
Stop strength: 65gf Max
Blue technical data
Total stroke: 400mm
Conduction stroke: 2.20 ± 06mm
Conduction force: 50 ± 10GF
Minimum trigger force: 30gf min
Stop strength: 65gf Max
Brown technical data
Total stroke: 400mm
Conduction stroke: 2.00 ± 06mm
Conduction force: 45 ± 10GF
Minimum trigger force: 30gf min
Stop strength: 65gf Max
Black technical data
Total stroke: 400mm
Conduction stroke: 2.00 ± 06mm
Conduction force: 60 ± 10GF
Minimum trigger force: 40gf min
Termination strength: 100gf Max
 
Package Included
10 Pcs Mechanical Keyboard switch

SMD Switches Black Red Brown Blue Clear Green Yellow 3pins Switch for Mechanical Keyboard Switch
 
Description
Red technical data
Total stroke: 400mm
Conduction stroke: 2.00 ± 06mm
Conduction force: 45 ± 10GF
Minimum trigger force: 30gf min
Stop strength: 65gf Max
Blue technical data
Total stroke: 400mm
Conduction stroke: 2.20 ± 06mm
Conduction force: 50 ± 10GF
Minimum trigger force: 30gf min
Stop strength: 65gf Max
Brown technical data
Total stroke: 400mm
Conduction stroke: 2.00 ± 06mm
Conduction force: 45 ± 10GF
Minimum trigger force: 30gf min
Stop strength: 65gf Max
Black technical data
Total stroke: 400mm
Conduction stroke: 2.00 ± 06mm
Conduction force: 60 ± 10GF
Minimum trigger force: 40gf min
Termination strength: 100gf Max
 
Package Included
10 Pcs Mechanical Keyboard switch

 
Potentiometer knob 148 mixer amplifier knob 15'' 16MM

Description:
Potentiometer knob 148 mixer amplifier knob 15'' 16MM
 
Package included:
10 Pcs Potentiometer knob
 
 

 
 
 
4S 12A 14.8V 16.8V 18650 Lithium Battery Protection Board 4 Cells Li-ion Lipo Polymer Charger Protection BMS/PCM/PCB Module
 

 
Description:
Model: Long HX-4S-A01
Short section HX-4S-A10
Short Size: 65 * 17 * 3.0mm
Overcharge voltage range: 4.25-4.35v ± 0
Overpressure voltage range: 2.3-3.0v ± 0.05v
Upper working current: 6-8A
Operating temperature: -40 --- 50 ℃
Upper limit instantaneous current: 12A
Storage conditions: -40-- 80 ℃
Quiescent current: less than 30uA
Effective life: more than 50,000 hours
Internal resistance: less than 100mΩ
Short circuit protection: can be protected, need to charge recovery
Charging voltage: 16.8V-17V
 
The protection board device description: components for the S-8254AA protection chip and AO4407 * 4.
 
Package Included:
1 Pcs 4S 12A 14.8V 16.8V 18650 Lithium Battery Protection Board
 
 

 
 
 
4S 12A 14.8V 16.8V 18650 Lithium Battery Protection Board 4 Cells Li-ion Lipo Polymer Charger Protection BMS/PCM/PCB Module
 

 
Description:
Model: Long HX-4S-A01
Short section HX-4S-A10
Short Size: 65 * 17 * 3.0mm
Overcharge voltage range: 4.25-4.35v ± 0
Overpressure voltage range: 2.3-3.0v ± 0.05v
Upper working current: 6-8A
Operating temperature: -40 --- 50 ℃
Upper limit instantaneous current: 12A
Storage conditions: -40-- 80 ℃
Quiescent current: less than 30uA
Effective life: more than 50,000 hours
Internal resistance: less than 100mΩ
Short circuit protection: can be protected, need to charge recovery
Charging voltage: 16.8V-17V
 
The protection board device description: components for the S-8254AA protection chip and AO4407 * 4.
 
Package Included:
1 Pcs 4S 12A 14.8V 16.8V 18650 Lithium Battery Protection Board
 
 

10K NTC temperature sensor
 

 
3.5mm Gold Bullet Banana Connector Plug For ESC Battery Motor 

 
Description:
Hook up brushless motor to electronic speed control
Low resistance, and gives the best electric flow
 
Specification:
Internal Diameter: 3.5mm
Male Connector Length: 0.50" (12mm)
Female Connector Length: 0.53" (13.5mm)
 
Package included:
10 Pcs 3.5mm gold-plated banana plug connector male
10 Pcs 3.5mm gold-plated banana plug connector female
 

 
Reprap Stepper Driver A4988 Stepper Motor Driver Module Dropshipping color:Green
Description:
A4988 is a complete microstepping motor driver with built-in translator for easy operation. This product is available in full, half, 1/4, 1/8 and 1/16 step modes operate bipolar stepper motors, output drive capacity of up to 35 V and ± 2 A. A4988 includes a fixed off-time current regulator, the regulator in slow or mixed decay modes. A4988 converter is the key to the easy implementation. As long as the "step" input inputting one pulse drives the motor one microstep. There are no phase sequence tables, high frequency control lines, or complex interfaces to program. A4988 interface is very suitable for complex microprocessor is unavailable or is overburdened.
   In the micro-step operation, A4988 chopping control inside automatically selects the current decay mode (Slow or Mixed). In mixed decay mode, the device is initially set to a fixed downtime in some fast decay, then the rest of the slow decay downtime. Mixed decay current control scheme results in reduced audible motor noise, increased step accuracy, and reduced power consumption. Internal synchronous rectification control circuitry is provided to improve the pulse-width modulation (PWM) operation power consumption. Internal circuit protection includes: thermal shutdown with hysteresis, undervoltage lockout (UVLO), and crossover-current protection. Special power sequencing.
   A4988 surface mount QFN package (ES), a size of 5 mm × 5 mm, nominal overall package height of 0.90 mm, with an exposed pad for enhanced thermal dissipation. This package is Pb (suffix-T), with 100% matte tin leadframe plating.
Low RDS (On) Output
Automatic current decay mode detection / selection
Mix with slow current decay modes
Synchronous rectification for low power dissipation
Internal UVLO
Cross-current protection
3.3 and 5 V compatible logic supply
Thermal shutdown circuitry
Ground fault protection
Load short-circuit protection
Optional step five modes: full, 1/2, 1/4, 1/8 and 1/16
Package Included
1 PCS A4988 Stepper Motor Driver Module

ov7670 camera module Supports VGA CIF auto exposure control display active size 640X480
Description:
OV7670 image sensor, small size, low operating voltage, and provides all the features of the single-chip VGA camera and image processor. Through theSCCB bus control, you can output the entire frame, sub-sampled, take the window way affect the data resolution of 8 bits. VGA image of the product is up to 30 frames / sec. Users can fully control the image quality, data format and transmission mode. The process of image processing functions including gamma curves, white balance, saturation, chroma, and so can beprogrammed through the SCCB interface. OmmiVision image sensor applications unique sensor technology to improve image quality by reducing or eliminating the optical or electronic defect, such as fixed pattern noise, tail-blooming, clear and stable color image.
 
High sensitivity for low-light applications
Low voltage suitable for embedded applications
Standard SCCB interface compatible with I2C interface
RawRGB to RGB (GRB4: 2:2, RGB565/555/444), YUV (4:2:2) and YCbCr (4:2:2)output format
support VGA, CIF, and from CIF to 40x30 the size
VarioPixel subsampling way
eliminate light stripes, automatic black level calibration image quality control including color saturation, hue, gamma, sharpness ANTI_BLOOM
ISP has eliminate noise and dead pixel compensation function
support image scaling
The lens is the loss of light compensation
50/60Hz detection
the saturation automatically adjust ( UV adjustment)
edge enhancement automatically adjust
Noise Reduction automatically adjust
key parameters
photosensitive array 640X480
IO voltage 2.5V to 3.0V ( internal LDO to core supplies ) the
power operation 60mW/15fpsVGAYUV
Sleep < 20 μ A
temperature operation from -30 ° C to 70 ° C
0 ° C to 50 ° C
( 8 -bit) output format ? YUV/YCbCr4 RGB565/555/444 GRB4: 2:2: 2:2 Raw RGB Data
Optical size of 1/6 "
field of view angle of 25 °
maximum Zhen rate 30fps VGA
Sensitivity 1.3V / (Lux-sec)
signal to noise ratio of 46 dB
dynamic range of 52 dB
browsing mode progressive
electronic exposure
area of 3.6 μ mx 3.6 μ m
dark current 12 mV / s at 60 ° C
 
Package Included:
1 Pcs CMOS Camera Module ov7670

TEA5767 FM Stereo Radio Module MP3 MP4 - For Professional Only
Description:
Built-in for Philips TEA5767 FM IC.
High sensitivity with integrated low-noise RF input amplifier.
Frequency range: 76 Mhz-108 Mhz.
Suitable for handheld applications.
Built in 32.768khz clock crystal.
Radio modules are widely used in consumer electronic audio-visual products,For example, MP3 PLAYER, MD, CD/MP3, PLAYER,PORTABL
VCD / DVD, MOBILE PHONE, PDA, electronic dictionary,digital refrigerator, car audio.
Package Includes:
1 Pcs TEA5767 for Philips Programmable Low-power FM Stereo Radio Module

MQ9 MQ 9 MQ-9 Smoke Liquefied Flammable Methane Gas Sensor Module for Arduino Diy Starter Kit
 
 
Description:
1.using high-quality dual-panel design, with power indicator and TTL signal output instructions;
2.the switching signal having a DO (TTL) output and analog output AO ;
3.TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module )
4.the higher the voltage of the analog output voltage with concentration higher .
5.for the carbon monoxide detector has good sensitivity.
6.there are four screw holes for easy positioning ;
7 Product dimensions : 32 (L) * 20 (W) * 22 (H)
8.has a long life and reliable stability
9.rapid response and recovery characteristics
 
Electrical properties:
Input voltage : DC5V Power consumption ( current ): 150mA
DO output : TTL digital 0 and 1 ( 0.1 and 5V)
AO output :0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4V
Special note: After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal heating wire , if hot is not normal .
 
Package included:
100% Brand New
1 PCS MQ-9 Module

5 Way Flame Sensor Module Digital Analog Output for Arduino Raspberry pi Cheap In Selling
Description：​
1. Five channel flame sensor design, wide range of detection (the detection range of the ordinary single flame sensor is probably about 30°, as the distance increases, the range is gradually reduced, the detection range of the product is greater than 120°)
2. Able to output a digital signal (high and low), easy to use
3. Able to output an analog signal (voltage signal), the measurement signal can be more accurately, the occasions for high precision
4. All five outputs status indicator, so whether debug or bring great convenience in the practical application of
5. Digital output detection distance adjustable.The analog output sensitivity adjustable, more flexible design
6. Using 1% resistor design, signal output is more accurate, suitable for the needs of high-precision measurement occasions
7. Onboard 3 M3 mounting holes for easy installation
8. 3.3V-9V power supply, and is compatible with most of the SCM system
9. The patch devices used in all SMT process auto matic welding, military quality reliable
 
Working principle :
The item is able to detect the flame band respectively in the range of 700-1100 nm, short-wave near-infrared (SW-NIR), and is output via an electric signal (voltage signal).
 
Application of occasions:
All occasions flame detection needs
 
Use Case:
Fighting robot
Fire alarm
 
Package Included​：
1 Pcs 5 Way Flame Sensor Module

 
5V / 12V Bond Bistable Relay Module Car Modification Switch One Key Start and Stop the Self-Locking
Description:
1.The power supply:  5V / 12V
2.Module size:   52.8mm x 32mm x 18mm
3.According to the board of the key, or an external button to make the relay module to attract or disconnect, click on the pull, and then press the button to disconnect, low level trigger.  Power on again when the relay is in off state.
4.The secondary output end of the relay to withstand the maximum current is 10A, that is the maximum working current cannot be accused of a circuit or device is greater than 10A, according to their own needs to be connected to the normally open or normally closed terminal.
5.Reserved external pull lights welding position, and the board has good welding the attraction indication lamp.
Package included:
1 Pcs Bond Bistable Relay Module

 
5V / 12V Bond Bistable Relay Module Car Modification Switch One Key Start and Stop the Self-Locking
Description:
1.The power supply:  5V / 12V
2.Module size:   52.8mm x 32mm x 18mm
3.According to the board of the key, or an external button to make the relay module to attract or disconnect, click on the pull, and then press the button to disconnect, low level trigger.  Power on again when the relay is in off state.
4.The secondary output end of the relay to withstand the maximum current is 10A, that is the maximum working current cannot be accused of a circuit or device is greater than 10A, according to their own needs to be connected to the normally open or normally closed terminal.
5.Reserved external pull lights welding position, and the board has good welding the attraction indication lamp.
Package included:
1 Pcs Bond Bistable Relay Module

 
JDY-62 Mini Antenna BLE Bluetooth Stereo Audio Dual Two Channel High Low Level Board Module for Uno for IOS Automatic Sleep
 

 
Description:
VCC: voltage range 4.2V to 5V, in particular, can not exceed 5V power supply
GND: Power
L: Left channel output
R: Right channel output
MUTE: high level when muted, normally low
KC: Empty Pin
 
The Bluetooth audio module requires very high power, otherwise it will affect the audio quality. The power supply must be provided if the LC filter circuit, especially the switching power supply.
 
Module size
PCB : 25*15.5*2.4MM
Pin pitch: 2.54MM
 
common problem:
1, search less than blue:
Generally caused by power interference, the power line must be coupled with the LC filter circuit.
2, whether to support 3.7V power supply:
The module is powered by 5V by default. You can replace the diode on the JDY-62 module with the 0805 OR resistance, or use a wire to short circuit, so that you can use a lithium battery
3, Bluetooth signal is too weak
Do not route or cover copper under the antenna of the Bluetooth module. There must be no metal shielding around the antenna.
4, the current sound is too loud
Generally caused by the power supply interface interference, it is recommended that the power amplifier wiring is not too long, the Bluetooth port and the power port are separated.
 
Package included:
1 Pcs JDY-62 Mini Antenna BLE Bluetooth Module
 

LCD1602 5V Blue Backlight 16*2 Lines White Character LCD module 1602A AB lcd 1602
 
Description:
The module is a high-quality 2 line 16 character LCD module with I2C interface and it is a basic character LCD screen for lots of applications.
It is compatible with Raspberry Pi and it can be used to display real time clock, temperature and humidity. Its backlight can help you to read the screen clearly in the dark environment.
Features:
- Library: LiquidCrystal_I2C
- Compatibility: Compatible with 3.3V system such as Raspberry Pi, STM32
- I2C Address: 0x20 or 0x38
- Resolution: 80 * 16
- Backlight color: Yellow-green
- Char color: Black
- Contrast Adjust: Potentiometer
- Display Size: 2.6 inch
- Working voltage: 3.3V DC
- Working current: 40mA
- Applications: MP3 players, thermometers, gauges, DIY projects, etc.
Note: You need to add 5V to 3.3V level converter circuit between UNO R3 and the module.
Shipping list:
1 Pcs 1602 LCD Module

TM1638 Module Key Display For AVR Uno New 8-Bit Digital LED Tube 8-Bit new original in stock
Description:
Weight:28 g
Color: as picture show
Size:75mmx48mm/2.95"x1.89"(inch) (approx)
The rated voltage: DC12V
Voltage range: DC7.0 V-13.6 V
The input power: 0.24 A
The rated speed: 9500 R.P.M
Temperature range:-10.. 70 ° C
Txpect life: 25 ° C L10 when expected life 50000 hours
Bearing structure: free maintenance dual ball bearings
Rotation direction: the wind from stents place eduction, facing the rotor counter-clockwise
The wiring way: red-black signal: blue (blue line, the alarm line speed, it is necessary to pay attention to). Line about 20 cm long
The biggest air volume: 26.8 m? / h
The electric motor protection : overload protection, wrong level protection and stall lock current protection
Minimum wind pressure : 0.. 120 Pa
Noise index : 41.9 dB (A)
Material qualitative material: glass fiber reinforced plastic, PBT shell, PA blades
Function explain : electronic reversing the rotor dc fans, complete electronic directional control components
 
 
Including the following resources:
1. 8 key
2. 8 LED common cathode
3. 8 a digital tube common cathode
Use TM1638 digital tube drive chip to drive common cathode LED digital tube
 
How to connect:
VCC GND 5V power supply, STB CLK DIO MCU I/O port
This module for the chip TM1638, set the above three kinds of single chip microcomputer common peripheral circuit, the biggest characteristic is to simply take microcontroller three IO mouth can drive, scanning display and key scan don't need microcontroller intervention, only need to register to display data related to reading and writing or testing buttons, save MCU resources. Buy the module provides an example program.
Wiring methods :
VCC GND connected 5V supply, STB CLK DIO connected microcontroller IO port.
 
Package Included:
1 Pcs TM1638 Display module

Gamepads JoyStick Keypad Shield PS2 for Uno nRF24L01 Nk 5110 LCD I2C
Description:
For all version of arduin Main board, 2009 , UNO, mega 1280, mega 2560
comes example code direct plug puzzle board, NO soldering needed.
Five momentary push buttons (4 joystick select button, just like the playstation 3 analog stick push button) two-axis thumb joystick
​
specification: 
The push buttons are connected to Uno digital pins 2-6; the related pin will be low when a certain button is pressed. Joystick Y-Axis movement will produce a proportional analog voltage on analog pin 0, while, Joystick X-Axis movement will produce a analog signal on analog pin 1.
Add nRF24L01 RF interface With Nokia 5110 LCD interface, so very easy to game development.
Adding a Bluetooth module interface, convenient Bluetooth wireless serial communication.
Add I2C communication interface, easy connectivity to I2C devices Meanwhile, JoyStick Shield with a cross PS2 joystick with buttons, there are four round buttons, 2 small buttons. Provides for Uno joystick and buttons input expansion. Onboard switches can switch between 3.3V and 5V, can use this model for other 3.3V microcontroller platforms, such as STM32.
Package included:
1 Pcs Gamepads JoyStick Keypad

 
JDY-19 Ultra-low Power Consumption Bluetooth 4.2 BLE Module
 

 
Description:
Model: JDY-19
Working frequency band: 2.4G
Transmitting power: 4db (maximum)
Communication interface: UART
Operating voltage: 1.8V – 3.6V
Working temperature: -40 ° C - 80 ° C
Antenna: Built-in PCB antenna
Receive sensitivity: -97dbm
Transmission distance: 80 meters
Master-slave support: slave
Module size: 19.6 * 14.94 * 1.8 mm (length, width, height)
Bluetooth version: BLE 4.2 (compatible with BLE4.0, BLE4.1)
Awakening state current: 500uA (with broadcast)
Light sleep state current: 
Deep sleep current: 3uA (no broadcast)
Instruction parameter saving: parameter configuration power-down data is saved
 
Package Included:
1 Pcs JDY-19 Ultra-low Power Consumption Bluetooth 4.2 BLE Module
 

I2C Wii WiiChuck Nunchuck Adapter shield Module Board for Arduino
Wiichuck is a break out board for Wii-Nunchuck. Use this shield to achieve communication between nunchuck  without broking the controller Wii Nunchuck. It is grate for DIY projects.
Descriptio
Condition: Brand new
Color: Blue
Material: PCB
Use this shield to achieve communication between nunchuck 
Application: DIY project
Dimensions: 1.02 in x 0.47 in x 0.28 in (2.6 cm x 1.2 cm x 0.7 cm)
Package Included:
1 Pcs I2C Wii WiiChuck Nunchuck Adapter shield Module Board

 
New Prototype Shield ProtoShield V3 Mini Bread Board For Uno MEGA
Description:
1. For Uno MEGA / MEGA2560 ProtoShield prototype expansion board with Immersion Gold PCB processing technology, motherboards, small gold square pad spacing, welding components easier.
2. SOP28 SMD component package to be more handy with Uno electronics enthusiasts will not be directly insert bound components.
3. The board can receive MEGA / MEGA2560 seamless plug controller, directly soldered to the above components to complete a variety of prototype circuit, you can paste Mini bread board, through the 7-color jumper to complete a variety of circuit experiment , board integrated power indicator and status lights, and reset buttons, easy to learn MEGA / MEGA2560 preferred prototype controller expansion board.
4. Full Compatible with Uno Mega ATmega1280 / MEGA2560.
5. Size:20cm x 15cm.
 
Package Included:
1 Pcs ProtoShield V3.0 For Uno
1 Pcs Mini Breadboard 170 points

 
USB 3.1 Type-C Connector 24Pin Female Socket PCB Adapter 2x12P Double Row Experimental Electronic Circuirt Board
 

 
Description:
Name: USB3.1 test socket c type-c data line test board with board USB C mother and daughter with PCB test stand
Size: 40*40MM
Process: Double-sided green oil with lead tin plate
Plate thickness: 1.6MM
Uses: For TYPE-C series function transfer test
PYPE-C carrier type: USB 3.1 female Type C lengthened positive and negative plug Taipu data tail plug full pin patch pin before post insert!
 
Package Included:
1 Pcs USB3.1 test socket c type-c data line test board
 

DC6V 12V 24V Pull Hold/Release 10mm Stroke 4N Force Electromagnet Solenoid Actuator
 
Range of application:
1.Slot machine/one-arm bandit
2.Coin machine
3.Office equipment
Line Printer/Computer equipment/fax machine/punch-in time clock/photocopier/typewriter/cash register/drawing machine/open drinking machines
4.Transporting equipment
Automatic door lock/safety belt lock/auto electromagnetic/mechanical parking equipment
5.Home appliances
Tape recorder/video recorder/keyboard/automatic knitting machine
6.Others
Packaging machine/manipulator/farming and stockbreeding machinery/stamping equipment
 
Normal type
*Operation condition
1.Operation temperature-5 to 40,the valve will not solidfication
2.Operation humiditynot solidify within the realtive humidity of 45% to 85%
3.Store temperaturenot solidify at the temperature of -40 to 75
4.Storage humiditynot solidify during the relative humidity of 0% to 95%
*Charactre note
Temperature risingunder 65(class a) lift: more than 1 million under loading
*Test temperature
1.Environment temperature23±2
2.Realative humidity50±10%
3.Air pressure1013MPa
4.Insulation resistanceneed 100MΩ insulating resistance when 500VDC insulator testing
5.Insulation strengththe strength should be 600VAC/1 min DC standard product table
Package Included:
1 PCS HCNE1-0520 Frame Pull Type DC Solenoid Electromagnet

MQ-4 gas methane sensor module MQ4 for Uno
 
Product Description:
MQ-4 gas sensor sensitive material used in clean air conductivity is lower tin dioxide (SnO2). When the sensor is present in the environment in which the combustible gas, the sensor's conductivity increases with the concentration of combustible gases in air increases. Using a simple circuit can be converted to the change in conductivity of the gas concentration with the corresponding output signal. MQ-4 methane gas sensor for high sensitivity, propane, butane and has a good sensitivity. The sensor can detect a variety of flammable gases, especially natural gas, is a low-cost sensors for a variety of applications.
 
 
For home or factory methane gas, natural gas and other monitoring devices to test natural gas, methane 300 to 10000ppm;
Module Features:
1, using high-quality dual-panel design, with power indicator and TTL signal output instructions;
2, with a DO switch signal (TTL) output and AO analog signal output;
3, TTL output valid signal is low. (When the output low signal light can be directly connected microcontroller or relay module)
4, the analog output voltage, the higher the concentration the higher the voltage.
5, methane, natural gas has better detection sensitivity.
6, there are four screw holes for easy positioning;
7, Product Dimensions: 32 (L) * 20 (W) * 22 (H)
8, with a long service life and reliable stability
9, rapid response and recovery characteristics
 
Electrical properties:
Input voltage: DC5V power (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output :0.1-0 .3 V (relatively clean), the highest concentration of voltage around 4V
Special note: The sensor is powered, needs to warm up around 20S, measured data becomes stable, the sensor fever is a normal phenomenon, because the internal heating wire, if hot is not normal.
 
Package included:
100% Brand New
1set x  MQ-4 Module

 
GY-MAX4466 MAX4466 Electret Microphone Amplifier Module Adjustable Gain OUT GND VCC Amplifier Board 2.4-5V DC For Uno
Description:
Add an ear to your project with this well-designed electret microphone amplifier. This fully assembled and 
tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, we use the 
Maxim MAX4466, an op-amp specifically designed for this delicate task! The amplifier has excellent power 
supply noise rejection, so this amplifier sounds really good and isn\'t nearly as noisy or scratchy as other 
mic amp breakouts we\'ve tried!
This breakout is best used for projects such as voice changers, audio recordingmpling, and audio-reactive projects that use FFT. On the back, we include a small trimmer pot to adjust the gain. You can 
set the gain from 25x to 125x. That\'s down to be about 200mVpp (for normal speaking volume about 6" 
away) which is good for attaching to something that expects \'line level\' input without clipping, or up to 
about 1Vpp, ideal for reading from a microcontroller ADC. The output is rail-to-rail so if the sounds gets 
loud, the output can go up to 5Vpp!
 
Using it is simple:
Connect GND to ground, VCC to 2.4-5VDC.
For the best performance, use the "quietest" supply available (on an for Arduino, this would be the 3.3V supply). 
The audio waveform will come out of the OUT pin. The output will have a DC bias of VCC/2 so when its 
perfectly quiet, the voltage will be a steady VCC/2 volts (it is DC coupled). If the audio equipment you\'re using 
requires AC coupled audio, place a 100uF capacitor between the output pin and the input of your device. If 
you\'re connecting to an audio amplifier that has differential inputs or includes decoupling capacitors, the 
100uF cap is not required.
The output pin is not designed to drive speakers or anything but the smallest in-ear headphones- you\'ll need 
an audio amplifier (such as 3.7W stereo amp) if you want to connect the amp directly to speakers. If you\'re 
connecting to a microcontroller pin, you don\'t need an amplifier or decoupling capacitor - connect the OUT 
pin directly to the microcontroller ADC pin.
For audio-reactive projects, we suggest using an FFT driver library which can take the audio input and \'translate\' it into 
frequencies.
 
Package Included:
1 Pcs GY-MAX4466 MAX4466 Electret Microphone Amplifier Module
 

 
55MM Long Propeller For HUBSAN X4 H107 H107C H107D Quadcopter (10pair)
Description:
100% Brand new and high quality
Designed to perfectly fit for Hubsan X4 Quadcopter.
Higher tension, easy to install
Included CW & CCW propeller
 
Specifications:
Material: Plastic
Length: 5.5cm
Color: Black
Net Weight: 1g
 
Package Included:
10 Pairs Propellers
 

10Pairs Dean Connector T plug For ESC Battery
 
Description:
Brand new and high quality 
10 Pairs Ultra T-Plug Connectors fit deans Lipo 
Similar to the deans plugs at cheaper price and function just as well 
Suitable for use in RC hobby, car, boat, plane, helicopter, lipo battery, etc. 
Male plug size: About 13mm x 7mm x 19mm 
Female plug size: About 13mm x 7mm x 15mm 
Color: burgundy and golden 
Material: plastic and metal (gold plated) 
Package include:
10 pcs Pieces of Male Connector 
10 pcs Pieces of Female Connector 

 
SYB-170 Mini Solderless Prototype Experiment Test Breadboard 170 Tie-points 35*47*8.5mm
 
 
Description
Mini Solderless Breadboard 
1 Terminal Strip 
Tie-point 170 
ABS plastic material 
Completely reusable 
Coloured coordinates for easy component placement 
Phosphor bronze nickel plated spring clips 
Accepts a variety of wire sizes (29-20 AWG) 
Dimensions: 45x34.5x8.5mm
Color: Black, white,blue,green, red,yellow
 
Package Included
10 Pcs SYB-170 Mini Solderless Breadboard

 
CH340G RS232 Update USB To TTL Converter Module UART Serial Port UFS-HWK STC Dowanloader Programmer Brush Small Plates

 
Description:
1.new original CH340G chips, the chips are STC official recommendation USB to TTL chips will not appear due to a different drive / different computer as a result of incompatibilities! ! !
2.golden appearance, quality and upscale yellow pin, pin durable than the black market, beautiful;
3. not only have the power light PWR, TXD and RXD LEDs also reserved RTS, CTS location convenient and intuitive know whether the product is at work in the absence of the instrument case;
4.3V3 and 5V by a short circuit risk selection;
5.Support WINDOWS 98 / ME / 2000 / XP / Server 2003 / VISTA /Server 2008 / Win7 / Win8 32 Bit / 64
 
Package Included:
1 Pcs CH340G RS232 Update USB To TTL Converter Module
 

4X4 Matrix Keyboard For Arduino Array Module 16 Key Push Buttons Tastatur Switch Keypad Panel 4*4 Tasten 8LEDs Accessory DIY Kit
Description:
100% Brand new and high quality Matrix Keyboards
Items : 4X4 Matrix Keypad 16Key Push Buttons 8LEDs 
Keypad Size : 5 X 6 CM
China post ordinary small packet Plus and Posti Finland economy don't have tracking information when parcel left China ,please choose carefully .
Package included : 
1 Pcs 4X4 Matrix keyword control panel 
4 Pcs screws
4 Pcs pillars

Blue OV7670 300KP VGA Camera Module for Uno
Description:
OV7670 image sensor, small size, low operating voltage, and provides all the features of the single-chip VGA camera and image processor. Through theSCCB bus control, you can output the entire frame, sub-sampled, take the window way affect the data resolution of 8 bits. VGA image of the product is up to 30 frames / sec. Users can fully control the image quality, data format and transmission mode. The process of image processing functions including gamma curves, white balance, saturation, chroma, and so can beprogrammed through the SCCB interface. OmmiVision image sensor applications unique sensor technology to improve image quality by reducing or eliminating the optical or electronic defect, such as fixed pattern noise, tail-blooming, clear and stable color image.
 
High sensitivity for low-light applications
Low voltage suitable for embedded applications
Standard SCCB interface compatible with I2C interface
RawRGB to RGB (GRB4: 2:2, RGB565/555/444), YUV (4:2:2) and YCbCr (4:2:2)output format
support VGA, CIF, and from CIF to 40x30 the size
VarioPixel subsampling way
eliminate light stripes, automatic black level calibration image quality control including color saturation, hue, gamma, sharpness ANTI_BLOOM
ISP has eliminate noise and dead pixel compensation function
support image scaling
The lens is the loss of light compensation
50/60Hz detection
the saturation automatically adjust ( UV adjustment)
edge enhancement automatically adjust
Noise Reduction automatically adjust
key parameters
photosensitive array 640X480
IO voltage 2.5V to 3.0V ( internal LDO to core supplies ) the
power operation 60mW/15fpsVGAYUV
Sleep < 20 μ A
temperature operation from -30 ° C to 70 ° C
0 ° C to 50 ° C
( 8 -bit) output format ? YUV/YCbCr4 RGB565/555/444 GRB4: 2:2: 2:2 Raw RGB Data
Optical size of 1/6 "
field of view angle of 25 °
maximum Zhen rate 30fps VGA
Sensitivity 1.3V / (Lux-sec)
signal to noise ratio of 46 dB
dynamic range of 52 dB
browsing mode progressive
electronic exposure
area of 3.6 μ mx 3.6 μ m
dark current 12 mV / s at 60 ° C
 
Package Included:
1 Pcs CMOS Camera Module ov7670
 

 
 
MH-MX8 MP3 Decoder Board Bluetooth 4.2 5.0 Audio Modul Verlustfreie Stereo DIY Refit Lautsprecher Hohe Fidelity HIFI
 
Description:
MH-M18 / M28 / M38 is a power-low Bluetooth design solution that supports the latest Bluetooth 4.2 transmission, two-channel stereo lossless playback, and Bluetooth wireless transmission when the module is connected to Bluetooth, which is very convenient  .  In an open environment, the Bluetooth connection distance can be up to 20 meters.
Widely used in a variety of Bluetooth audio reception, a variety of audio DIY modification.
For your different needs, we offer 3 versions for you to choose from:
Bluetooth V4.2 version, supports Bluetooth automatic connection technology, supports WAV/WMA/FLAC/APE/MP3 lossless decoding, stereo dual channel output.
After the module is powered on, the mobile phone searches for the Bluetooth name MH- M18/MH-M28/MH-M38, and can play music after connecting Bluetooth.
Module blue indicator light:
When the Bluetooth is not connected, the indicator light flashes quickly;
When the Bluetooth connection is on, the indicator light is always on;
When the Bluetooth is playing, the indicator light flashes slowly.
MH-M18:
MUTE mute control terminal: used to control the power amplifier board. When muting, MUTE outputs a high level of 3.3V, and outputs a low level during playback.
KEY button control: This function requires additional connection of resistors and buttons .
Volume power off function: The default output is 100% volume.  Press the button to control the volume increase and decrease. If the control volume is less than 15% , the volume output will be 15% after re-powering; if the control volume is greater than 15% , the original volume will remain unchanged after power-on.
MH-M28:
1. Power supply: You can directly use the MICRO USB Android cable 5V for direct power supply, or you can also connect 5V power supply or 3.7V lithium battery. 
 Note that the 5V and 3.7V power supply interfaces are different. The 5V voltage is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.
2. Audio output: The earphone can be directly connected to the 3.5mm audio interface, or it can be wired for the audio input of the power amplifier board (interface L/R/AGND can be directly wired)
MH-M38:
1. Power supply: You can directly use the MICRO USB Android cable 5V for direct power supply, or you can also connect 5V power supply or 3.7V lithium battery. 
Note that the 5V and 3.7V power supply interfaces are different . The 5V voltage is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.
2. Audio output: The earphone can be directly connected to the 3.5mm audio interface, or it can be wired for the audio input of the power amplifier board (interface L/R/AGND can be directly wired).
1. Power supply: You can directly use the MICRO USB Android cable 5V for direct power supply, or you can also connect 5V power supply or 3.7V lithium battery.  Note that the 5V and 3.7V power supply interfaces are different. 5V is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.
The maximum operating current is 5V2A. It is recommended to use a regulated power supply of 5V2A for better sound quality.
2. Support USB sound card, free drive (plug and play).  Connect the module to the computer with the USB cable, and the computer can play music through the module amplifier output.
3. Audio output: output left and right channel stereo audio signals, can be connected to two 2- 8 euro, 3-5W speakers, push 4 O 5W speakers.
4. This product has its own dual 5W power amplifier circuit, and must not be connected to another amplifier!  The outputs of the two amplifiers cannot be connected in parallel or the negative poles are connected together, otherwise the power amplifier chip is damaged.
 
 
Package Included:
1 Pcs MP3 Decoder Board
 
 

 
Stereo 3.5 Bluetooth Receiver Wireless For Car Music Audio Blutooth Adapter Aux 3.5mm A2dp For Headphone Reciever Jack Handsfree
 

 
Description:
Bluetooth Standard: Bluetooth 3.0 EDR, support A2DP V1.2
Power supply: 5V USB
Output: 3.5mm Audio interface
Distance: about 10m
Sound output rate: 44.1KHZ and 48KHZ.
 
Specification:
Operation steps:
Step one:
For No USB port Speakers: Supply power to the device by connecting charger with 5 V USB interface, then connect the Speaker\'s AUX port with the audio cable.
For Speakers with USB port: Connect the device with speaker\'s USB port directly ,then then connect the Speaker\'s AUX port with the audio cable.
 
Step two:
 Turn on the Bluetooth function of computer,mobile or other device which has Bluetooth function, searching for the H-163 device to connect and input: 0000 for matching when the device is in the matching mode. After matching success ,the indicator light turn to twinkle slowly.Then you can use for iPhone and other bluetooth transmitter playing the music.
 
Package Included:
1 Pcs USB Bluetooth Audio Music Receiver (Speaker not included,just for reference)
1 Pcs 3.5mm Audio Cable
 

1S 2S 3S 4S Lithium Battery Capacity Indicator Module Meter Tester Display 4.2V 8.4V 12.6V 16.8V Power Level

Description:
 
If you want documents or have any other questions  , contact us ~                      
 
Without case versions:
1S Single 3.7V Lithium Battery Capacity Indicator Module 4.2V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
2S 2 Series Lithium Battery Capacity Indicator Module 8.4V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
3S 12.6V Lithium Battery Capacity Indicator Module 3 Series Blue Display Electric Storage Battery Power Tester Meter Lipo Li-ion
4S 4 Series Lithium Battery Capacity Indicator Module 16.8V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
 
 
Features：
1.Battery type electricity quantity display
2.Wide application fields:lithium battery
3.Using Method:connect display board positive and negative port with tested battery positive and negative port,digital tube will display real-time battery electricity quantity
4.Digital Color:outline red,display block blue (when battery electricity quantity is full,it will be all on)
 
 
Display Electricity Quantity Parameter:
1.When battery voltage is over N*3.3V,it will illuminate 1 block electricity quantity (note:N represents battery quantity)
2.When battery voltage is over N*3.5V,it will illuminate 2 blocks electricity quantity
3.When battery voltage is over N*3.7V,it will illuminate 3 blocks electricity quantity
4.When battery voltage is over N*3.9V,it will illuminate 4 blocks electricity quantity
5.When battery voltage is less than N*3.3V,4 blocks display will be off;it represents battery is less than 3.3V,and you can charge the battery.
 
 
Package included:
1 Pcs Lithium Battery Capacity Indicator Module
 

1S 2S 3S 4S Lithium Battery Capacity Indicator Module Meter Tester Display 4.2V 8.4V 12.6V 16.8V Power Level

Description:
 
If you want documents or have any other questions  , contact us ~                      
 
Without case versions:
1S Single 3.7V Lithium Battery Capacity Indicator Module 4.2V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
2S 2 Series Lithium Battery Capacity Indicator Module 8.4V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
3S 12.6V Lithium Battery Capacity Indicator Module 3 Series Blue Display Electric Storage Battery Power Tester Meter Lipo Li-ion
4S 4 Series Lithium Battery Capacity Indicator Module 16.8V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
 
 
Features：
1.Battery type electricity quantity display
2.Wide application fields:lithium battery
3.Using Method:connect display board positive and negative port with tested battery positive and negative port,digital tube will display real-time battery electricity quantity
4.Digital Color:outline red,display block blue (when battery electricity quantity is full,it will be all on)
 
 
Display Electricity Quantity Parameter:
1.When battery voltage is over N*3.3V,it will illuminate 1 block electricity quantity (note:N represents battery quantity)
2.When battery voltage is over N*3.5V,it will illuminate 2 blocks electricity quantity
3.When battery voltage is over N*3.7V,it will illuminate 3 blocks electricity quantity
4.When battery voltage is over N*3.9V,it will illuminate 4 blocks electricity quantity
5.When battery voltage is less than N*3.3V,4 blocks display will be off;it represents battery is less than 3.3V,and you can charge the battery.
 
 
Package included:
1 Pcs Lithium Battery Capacity Indicator Module
 

1S 2S 3S 4S Lithium Battery Capacity Indicator Module Meter Tester Display 4.2V 8.4V 12.6V 16.8V Power Level

Description:
 
If you want documents or have any other questions  , contact us ~                      
 
Without case versions:
1S Single 3.7V Lithium Battery Capacity Indicator Module 4.2V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
2S 2 Series Lithium Battery Capacity Indicator Module 8.4V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
3S 12.6V Lithium Battery Capacity Indicator Module 3 Series Blue Display Electric Storage Battery Power Tester Meter Lipo Li-ion
4S 4 Series Lithium Battery Capacity Indicator Module 16.8V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
 
 
Features：
1.Battery type electricity quantity display
2.Wide application fields:lithium battery
3.Using Method:connect display board positive and negative port with tested battery positive and negative port,digital tube will display real-time battery electricity quantity
4.Digital Color:outline red,display block blue (when battery electricity quantity is full,it will be all on)
 
 
Display Electricity Quantity Parameter:
1.When battery voltage is over N*3.3V,it will illuminate 1 block electricity quantity (note:N represents battery quantity)
2.When battery voltage is over N*3.5V,it will illuminate 2 blocks electricity quantity
3.When battery voltage is over N*3.7V,it will illuminate 3 blocks electricity quantity
4.When battery voltage is over N*3.9V,it will illuminate 4 blocks electricity quantity
5.When battery voltage is less than N*3.3V,4 blocks display will be off;it represents battery is less than 3.3V,and you can charge the battery.
 
 
Package included:
1 Pcs Lithium Battery Capacity Indicator Module
 

1S 2S 3S 4S Lithium Battery Capacity Indicator Module Meter Tester Display 4.2V 8.4V 12.6V 16.8V Power Level

Description:
 
If you want documents or have any other questions  , contact us ~                      
 
Without case versions:
1S Single 3.7V Lithium Battery Capacity Indicator Module 4.2V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
2S 2 Series Lithium Battery Capacity Indicator Module 8.4V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
3S 12.6V Lithium Battery Capacity Indicator Module 3 Series Blue Display Electric Storage Battery Power Tester Meter Lipo Li-ion
4S 4 Series Lithium Battery Capacity Indicator Module 16.8V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
 
 
Features：
1.Battery type electricity quantity display
2.Wide application fields:lithium battery
3.Using Method:connect display board positive and negative port with tested battery positive and negative port,digital tube will display real-time battery electricity quantity
4.Digital Color:outline red,display block blue (when battery electricity quantity is full,it will be all on)
 
 
Display Electricity Quantity Parameter:
1.When battery voltage is over N*3.3V,it will illuminate 1 block electricity quantity (note:N represents battery quantity)
2.When battery voltage is over N*3.5V,it will illuminate 2 blocks electricity quantity
3.When battery voltage is over N*3.7V,it will illuminate 3 blocks electricity quantity
4.When battery voltage is over N*3.9V,it will illuminate 4 blocks electricity quantity
5.When battery voltage is less than N*3.3V,4 blocks display will be off;it represents battery is less than 3.3V,and you can charge the battery.
 
 
Package included:
1 Pcs Lithium Battery Capacity Indicator Module
 

1S 2S 3S 4S Lithium Battery Capacity Indicator Module Meter Tester Display 4.2V 8.4V 12.6V 16.8V Power Level

Description:
 
If you want documents or have any other questions  , contact us ~                      
 
Without case versions:
1S Single 3.7V Lithium Battery Capacity Indicator Module 4.2V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
2S 2 Series Lithium Battery Capacity Indicator Module 8.4V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
3S 12.6V Lithium Battery Capacity Indicator Module 3 Series Blue Display Electric Storage Battery Power Tester Meter Lipo Li-ion
4S 4 Series Lithium Battery Capacity Indicator Module 16.8V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
 
 
Features：
1.Battery type electricity quantity display
2.Wide application fields:lithium battery
3.Using Method:connect display board positive and negative port with tested battery positive and negative port,digital tube will display real-time battery electricity quantity
4.Digital Color:outline red,display block blue (when battery electricity quantity is full,it will be all on)
 
 
Display Electricity Quantity Parameter:
1.When battery voltage is over N*3.3V,it will illuminate 1 block electricity quantity (note:N represents battery quantity)
2.When battery voltage is over N*3.5V,it will illuminate 2 blocks electricity quantity
3.When battery voltage is over N*3.7V,it will illuminate 3 blocks electricity quantity
4.When battery voltage is over N*3.9V,it will illuminate 4 blocks electricity quantity
5.When battery voltage is less than N*3.3V,4 blocks display will be off;it represents battery is less than 3.3V,and you can charge the battery.
 
 
Package included:
1 Pcs Lithium Battery Capacity Indicator Module
 

1S 2S 3S 4S Lithium Battery Capacity Indicator Module Meter Tester Display 4.2V 8.4V 12.6V 16.8V Power Level

Description:
 
If you want documents or have any other questions  , contact us ~                      
 
Without case versions:
1S Single 3.7V Lithium Battery Capacity Indicator Module 4.2V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
2S 2 Series Lithium Battery Capacity Indicator Module 8.4V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
3S 12.6V Lithium Battery Capacity Indicator Module 3 Series Blue Display Electric Storage Battery Power Tester Meter Lipo Li-ion
4S 4 Series Lithium Battery Capacity Indicator Module 16.8V Blue Display Electric Vehicle Battery Power Tester Li-po Li-ion
 
 
Features：
1.Battery type electricity quantity display
2.Wide application fields:lithium battery
3.Using Method:connect display board positive and negative port with tested battery positive and negative port,digital tube will display real-time battery electricity quantity
4.Digital Color:outline red,display block blue (when battery electricity quantity is full,it will be all on)
 
 
Display Electricity Quantity Parameter:
1.When battery voltage is over N*3.3V,it will illuminate 1 block electricity quantity (note:N represents battery quantity)
2.When battery voltage is over N*3.5V,it will illuminate 2 blocks electricity quantity
3.When battery voltage is over N*3.7V,it will illuminate 3 blocks electricity quantity
4.When battery voltage is over N*3.9V,it will illuminate 4 blocks electricity quantity
5.When battery voltage is less than N*3.3V,4 blocks display will be off;it represents battery is less than 3.3V,and you can charge the battery.
 
 
Package included:
1 Pcs Lithium Battery Capacity Indicator Module
 

2pin JST Connector 15cm Wire Single Color SMD 5050 3528 3014 5630 LED Strip Strips 2Pin Connector Cable
 
Description:
Plug Cable
Connector for RC BEC Lipo Battery
Cable Connector
Color: Black red 
Cable length: 150mm
Package included:
5 Pairs 2 Pin JST Female and Male Connector
 

10Pairs Dean Connector T plug For ESC Battery
Description:
Brand new and high quality 
10 Pairs Ultra T-Plug Connectors fit deans Lipo 
Similar to the deans plugs at cheaper price and function just as well 
Suitable for use in RC hobby, car, boat, plane, helicopter, lipo battery, etc. 
Male plug size: About 13mm x 7mm x 19mm 
Female plug size: About 13mm x 7mm x 15mm 
Color: burgundy and golden 
Material: plastic and metal (gold plated)
Package include:
10 pcs Pieces of Male Connector 
10 pcs Pieces of Female Connector 

 
9MM laser head red laser diode laser diode laser diode
Description:
For a long time to light the laser head please increase the limiting resistance
1, the laser at any time can never point to themselves or others eyes, even if the laser in the closed case will have opened the possibility of error.
2, the laser can not irradiate any reflective surface or smooth surface, excellent laser reflection, on exposure to when the reflective surface will produce reflection, if exposure to human eyes can cause damage.
3, the laser is not a toy, do not give children intelligence is not complete, do not understand the laser characteristics of people, in this case, easily lead to injury.
4, the use of lasers should wear special goggles, the invisible laser, this is particularly important.
5, according to the laser can not vehicles, aircraft have transportation.
6, the laser should pay attention to the safety of the battery, to prevent others from removing the battery or battery explosion caused by short combustion.
Laser emission principle and special nature of the production process determines the characteristics of laser light that does not have a common: the Miyoshi (good monochromaticity, coherence, directionality) high (high intensity).
 
Transmit power:

5mW
Power:

50mW
Voltage

3V
electric current

<20mA
Working temperature:

-36C~65C
Storage temperature:

-36C~65C
Package included:
1 Pcs 9MM laser head 

 
9MM laser head red laser diode laser diode laser diode
Description:
For a long time to light the laser head please increase the limiting resistance
1, the laser at any time can never point to themselves or others eyes, even if the laser in the closed case will have opened the possibility of error.
2, the laser can not irradiate any reflective surface or smooth surface, excellent laser reflection, on exposure to when the reflective surface will produce reflection, if exposure to human eyes can cause damage.
3, the laser is not a toy, do not give children intelligence is not complete, do not understand the laser characteristics of people, in this case, easily lead to injury.
4, the use of lasers should wear special goggles, the invisible laser, this is particularly important.
5, according to the laser can not vehicles, aircraft have transportation.
6, the laser should pay attention to the safety of the battery, to prevent others from removing the battery or battery explosion caused by short combustion.
Laser emission principle and special nature of the production process determines the characteristics of laser light that does not have a common: the Miyoshi (good monochromaticity, coherence, directionality) high (high intensity).
 
Transmit power:

5mW
Power:

50mW
Voltage

3V
electric current

<20mA
Working temperature:

-36C~65C
Storage temperature:

-36C~65C
Package included:
1 Pcs 9MM laser head 

 
9MM laser head red laser diode laser diode laser diode
Description:
For a long time to light the laser head please increase the limiting resistance
1, the laser at any time can never point to themselves or others eyes, even if the laser in the closed case will have opened the possibility of error.
2, the laser can not irradiate any reflective surface or smooth surface, excellent laser reflection, on exposure to when the reflective surface will produce reflection, if exposure to human eyes can cause damage.
3, the laser is not a toy, do not give children intelligence is not complete, do not understand the laser characteristics of people, in this case, easily lead to injury.
4, the use of lasers should wear special goggles, the invisible laser, this is particularly important.
5, according to the laser can not vehicles, aircraft have transportation.
6, the laser should pay attention to the safety of the battery, to prevent others from removing the battery or battery explosion caused by short combustion.
Laser emission principle and special nature of the production process determines the characteristics of laser light that does not have a common: the Miyoshi (good monochromaticity, coherence, directionality) high (high intensity).
 
Transmit power:

5mW
Power:

50mW
Voltage

3V
electric current

<20mA
Working temperature:

-36C~65C
Storage temperature:

-36C~65C
Package included:
1 Pcs 9MM laser head 

Smart Electronics Digital USB Mobile Power Charging Current Voltage Tester Meter Mini USB Charger Doctor Voltmeter Ammeter

Description
1.Easy to measure the USB output vollage and the device input current or loader voltage.
2.Availabe for every USB electronic product,such as PC USB,home charger,car charger and so on.
3.Plug and ,light and handy,easy to carry and no need external power.
4.Through "DR CHARGER",you could clearly know the condition of the charger,phone,usb cable and every USB device.
Detection range:
Voltage:DC 3.5V-7V,error 0.1V
Current:0-3.0A,error 2%
Package Included
1 Pcs LED Digital Voltmeter Ammeter USB Charger Doctor

Smart Electronics Digital USB Mobile Power Charging Current Voltage Tester Meter Mini USB Charger Doctor Voltmeter Ammeter

Description
1.Easy to measure the USB output vollage and the device input current or loader voltage.
2.Availabe for every USB electronic product,such as PC USB,home charger,car charger and so on.
3.Plug and ,light and handy,easy to carry and no need external power.
4.Through "DR CHARGER",you could clearly know the condition of the charger,phone,usb cable and every USB device.
Detection range:
Voltage:DC 3.5V-7V,error 0.1V
Current:0-3.0A,error 2%
Package Included
1 Pcs LED Digital Voltmeter Ammeter USB Charger Doctor

Smart Electronics Digital USB Mobile Power Charging Current Voltage Tester Meter Mini USB Charger Doctor Voltmeter Ammeter

Description
1.Easy to measure the USB output vollage and the device input current or loader voltage.
2.Availabe for every USB electronic product,such as PC USB,home charger,car charger and so on.
3.Plug and ,light and handy,easy to carry and no need external power.
4.Through "DR CHARGER",you could clearly know the condition of the charger,phone,usb cable and every USB device.
Detection range:
Voltage:DC 3.5V-7V,error 0.1V
Current:0-3.0A,error 2%
Package Included
1 Pcs LED Digital Voltmeter Ammeter USB Charger Doctor

Smart Electronics Digital USB Mobile Power Charging Current Voltage Tester Meter Mini USB Charger Doctor Voltmeter Ammeter

Description
1.Easy to measure the USB output vollage and the device input current or loader voltage.
2.Availabe for every USB electronic product,such as PC USB,home charger,car charger and so on.
3.Plug and ,light and handy,easy to carry and no need external power.
4.Through "DR CHARGER",you could clearly know the condition of the charger,phone,usb cable and every USB device.
Detection range:
Voltage:DC 3.5V-7V,error 0.1V
Current:0-3.0A,error 2%
Package Included
1 Pcs LED Digital Voltmeter Ammeter USB Charger Doctor

5A Lithium Charger CV CC buck Step down Power Supply Module LED Driver New
 
description:
1, the Input voltage range: 6 ~ 38 VDC (Note: the Input voltage not exceeding 38 v)
2, the Output voltage range: 1.25-36 VDC adjustable
3, the Output current: 0-5 a
4, the Output power: 75 w
5, High efficiency up to 96%
6, Built in thermal shutdown function
7, Built in the current limit function
8, Built the output in short protection function
9, Input reverse polarity protection: None (if required, high current diode in series with the Input).
10, L x W x H = 61.7 * 26.2 * 15 mm
11, Weight: 20 g
 
Shipping list:
1 Pcs DC-DC XL4015 5A Module