Tesztberendezés alkatrészei és tartozékai

Feature:
Provide two-way communication capability
VCCA side support voltage: 1.2V-3.6V
VCCB side support voltage: 1.65v-5.5v
Can provide 3.3-5V, 1.8-3.3v and other common level conversion capability
Main applications:
5V and 3.3V MCU module
3.3V and 5V MCU module
Compatible and other communications support
MCU and SD card communication level conversion
SCM and iic, spi serial device level converter
OE active high enable IO recommended by a low voltage side of the IO port

Product Description
SMD component test clip Technical parameters:
Lead length: 400mm, grip length: 145mm, probe length: 5mm
Maximum opening of clip: 10mm
For SMD resistors, capacitors, IC testing
One-hand operation, convenient and practical

Description
Premium Quality Case for Raspberry Pi 2, 3 and Model B Features:This is a well constructed, no-nonsense protective case designed specifically for the Raspberry Pi 2 and 3 Model B The case is a two-piece injection molded ABS enclosure that snaps together around the Raspberry PiThe Black plastic is high qualityProvides excellent protection whilst maintaining great accessibility to all ports and GPIO connectors.Mountable using specific mounting holes at the base.Heat vents to provide excellent air flow to keep you pi cool.Soft rubber feet included.Specifications:Length 3.54"Width 2.76"Height 0.98"Package1 x Raspberry Pi case

Description
Premium Quality Case for Raspberry Pi 2, 3 and Model B Features:This is a well constructed, no-nonsense protective case designed specifically for the Raspberry Pi 2 and 3 Model B The case is a two-piece injection molded ABS enclosure that snaps together around the Raspberry PiThe Black plastic is high qualityProvides excellent protection whilst maintaining great accessibility to all ports and GPIO connectors.Mountable using specific mounting holes at the base.Heat vents to provide excellent air flow to keep you pi cool.Soft rubber feet included.Specifications:Length 3.54"Width 2.76"Height 0.98"Package1 x Raspberry Pi case

Description
Premium Quality Case for Raspberry Pi 2, 3 and Model B Features:This is a well constructed, no-nonsense protective case designed specifically for the Raspberry Pi 2 and 3 Model B The case is a two-piece injection molded ABS enclosure that snaps together around the Raspberry PiThe Black plastic is high qualityProvides excellent protection whilst maintaining great accessibility to all ports and GPIO connectors.Mountable using specific mounting holes at the base.Heat vents to provide excellent air flow to keep you pi cool.Soft rubber feet included.Specifications:Length 3.54"Width 2.76"Height 0.98"Package1 x Raspberry Pi case

Introduction
Brand new and high quality
Model: MB-102 Breadboard with color bar and red and blue line
Ideal for high frequency and low noise circuits
Interconnect any components with 20-29 AWG(0.3-0.8 mm) wire
Special designed spring clip over 5,000 insertion cycles
Nickel plated, silver plated and gold plated available
830 points
Size: 16.5 x 5.5 cm
Color:White/Transparent

Introduction
Brand new and high quality
Model: MB-102 Breadboard with color bar and red and blue line
Ideal for high frequency and low noise circuits
Interconnect any components with 20-29 AWG(0.3-0.8 mm) wire
Special designed spring clip over 5,000 insertion cycles
Nickel plated, silver plated and gold plated available
830 points
Size: 16.5 x 5.5 cm
Color:White/Transparent

Introduction
Brand new and high quality
Model: MB-102 Breadboard with color bar and red and blue line
Ideal for high frequency and low noise circuits
Interconnect any components with 20-29 AWG(0.3-0.8 mm) wire
Special designed spring clip over 5,000 insertion cycles
Nickel plated, silver plated and gold plated available
830 points
Size: 16.5 x 5.5 cm
Color:White/Transparent

Introduction
Brand new and high quality
Model: MB-102 Breadboard with color bar and red and blue line
Ideal for high frequency and low noise circuits
Interconnect any components with 20-29 AWG(0.3-0.8 mm) wire
Special designed spring clip over 5,000 insertion cycles
Nickel plated, silver plated and gold plated available
830 points
Size: 16.5 x 5.5 cm
Color:White/Transparent

Product Description
Power Supply 3.7-5V
SNR 90dB
THD N -70dB
Crosstalk -86dB
DNR 91dB
Support Profile A2DP/AVCTP/AVDTP/AVRCP/HFP
LOS >15m
2.Interface details
USB powered Universal Micro USB 5V power supply
3.7-5V Supply Pad External 3.7-5V lithium battery power conversion
LED indicator Bluetooth mode long blue light
3.5mm stereo audio interface Standard 3.5mm interface, output stereo sound source, plug in headphones, connect amplifiers and other devices
Instructions:
After the power is turned on, the blue indicator lights up and enters the Bluetooth mode; the English The bluetooth device is ready to pair is displayed, indicating that the Bluetooth mode is entered and waiting for pairing; the XY_BT searched by the mobile phone Bluetooth is the device name of the decoding board. , Click on the connection, the decoder board prompts "The bluetooth device is connected successfully", indicating that the decoder board and the mobile phone are connected successfully, you can play music. As shown below

Product Description
Power Supply 3.7-5V
SNR 90dB
THD N -70dB
Crosstalk -86dB
DNR 91dB
Support Profile A2DP/AVCTP/AVDTP/AVRCP/HFP
LOS >15m
2.Interface details
USB powered Universal Micro USB 5V power supply
3.7-5V Supply Pad External 3.7-5V lithium battery power conversion
LED indicator Bluetooth mode long blue light
3.5mm stereo audio interface Standard 3.5mm interface, output stereo sound source, plug in headphones, connect amplifiers and other devices
Instructions:
After the power is turned on, the blue indicator lights up and enters the Bluetooth mode; the English The bluetooth device is ready to pair is displayed, indicating that the Bluetooth mode is entered and waiting for pairing; the XY_BT searched by the mobile phone Bluetooth is the device name of the decoding board. , Click on the connection, the decoder board prompts "The bluetooth device is connected successfully", indicating that the decoder board and the mobile phone are connected successfully, you can play music. As shown below

Description
ADC Bit rate: 16 Bit

Interface Type: I2C
Channels: 4 Channel AN0 AN1 AN2 AN3 or 2 differential inputs
Input voltage: 2.0-5.5v
Channel input voltage :0-VDD
Continuous Mode: Only 150μA
Single-Shot Mode: Auto Shut-Down
PROGRAMMABLE DATA RATE:8sps-860sps
Input range programmed control, 7 types input ranges:
-0.256V ~ 0.256V, -0.512V ~ 0.512V, -1.024V ~ 1.024V,
-2.048V ~ 2.048V, -4.096V ~ 4.096 V, -6.144V ~ 6.144V
I2C 7-bit addresses between 0x48-0x4B
Size:18mm*28mm


Applications

Portable instrumentation
Consumer goods
Battery monitoring
Temperature measurement
Factory automation and process controls

description
Note: This module does not ship with a cable, friends who need it, please purchase separately
2. Module description:
1. Onboard square USB interface, stable connection
2. Use imported high-performance USB control chip
3. Use genuine Songle relay
4. Military-grade PCB board production
5. PCB size: 56.5mm*24.9mm
6. Fixed hole size: 3mm, fixed hole center moment: 52.2mm*20.6mm

3. Product parameters:
1. The relay is a 5V relay, the relay can control the maximum 250V, 10A AC load and 30V, 10A DC load
2. Control terminal connection mode: NC/COM/NO.

Description:
1. This module uses imported high-performance chip, the performance is superior to the general module.
2. Enter any 0.9V ~ 5V DC voltage of 5V DC output voltage can be stable, with a single AA battery can deliver up to 200 ~ 300MA current, two AA batteries to output 500 ~ 600MA of current, for your phone (iphone temporarily can not), camera, microcontroller and digital products supply
3. Industrial Temperature Range: prefix = st1 ns = "urn: schemas-microsoft-com: office: smarttags" -40 Celsius ~ 85 Celsius.
4. High conversion efficiency, up to 96% .
5. With USB female seat, wide range of uses.
6. The ultra-small size (PCB board 25mm * 18mm), with the installation of a variety of small equipment inside.
7. with working lights.

Description:
1. This module uses imported high-performance chip, the performance is superior to the general module.
2. Enter any 0.9V ~ 5V DC voltage of 5V DC output voltage can be stable, with a single AA battery can deliver up to 200 ~ 300MA current, two AA batteries to output 500 ~ 600MA of current, for your phone (iphone temporarily can not), camera, microcontroller and digital products supply
3. Industrial Temperature Range: prefix = st1 ns = "urn: schemas-microsoft-com: office: smarttags" -40 Celsius ~ 85 Celsius.
4. High conversion efficiency, up to 96% .
5. With USB female seat, wide range of uses.
6. The ultra-small size (PCB board 25mm * 18mm), with the installation of a variety of small equipment inside.
7. with working lights.

Specification
Material: electrical components
Converter Type: DC-DC
Input voltage: 5 -23V (better voltage 20V)
Output voltage: 0 -16.5V (continuously adjustable)
Peak current: 3A
Motherboard Size: approx. 50 x 30 x 12 mm (L x W x H)
Display Module: STN LCD
LCD Size: approx. 37.5 x 17.0 mm (L x W)
LCD Accuracy: 1%
Conversion efficiency: 95%
Load regulation (I): ≤ 0.8%
Voltage regulation (U): ≤ 0.8%

Package Included:
1 x Step Down Power Supply Module

Features:
100% Brand new and high quality.
Material: Electronic components PCB
Size: About 31 * 19 * 29mm / 1.22" * 0.75" * 1.14"
Main color: Black
Working voltage: 5V
Pulse circle: 20
By rotating the rotary encoder can be counted in the positive direction and the reverse direction during rotation of the output pulse frequency, unlike rotary potentiometer count, this rotation counts are not limited. With the buttons on the rotary encoder can be reset to its initial state, that starts counting from 0.


Package Included:


1 x Rotary Encoder Module Brick Sensor Development Board

2 Channel Solid State Relay
1, the use of solid state relays, output with a resistive fuse 240V 2A.
2, Size: 55 * 33 * 25 (L * W * H)
3, input power: 5V DC (160MA)
4, the input control signal voltage:
0-1.5V state low level relay
5, blue KF301 terminal access control line more convenient

MAX98357 I2S Audio Amplifier Module Unfiltered Class D Amplifier Support ESP32 Raspberry Pi
Single-Supply Operation (2.5V to 5.5V)
3.2W Output Power into 4I at 5V
2.4mA Quiescent Current
92% Efficiency (R L = 8I, P OUT = 1W)
25µV RMS Output Noise (A V = 15dB)
Low 0.015% THD N at 1kHz
No MCLK Required
Sample Rates of 8kHz to 96kHz
Supports Left, Right, or (Left/2 Right/2) Output
Sophisticated Edge Rate Control Enables
Filterless Class D Outputs
77dB PSRR at 1kHz
Low RF Susceptibility Rejects TDMA
Noise from GSM Radios
Extensive Click-andPop Reduction Circuitry
Robust Short-Circuit and Thermal Protection
Available in Space-Saving Packages:
1.345mm x 1.435mm WLP (0.4mm Pitch)
and 3mm x 3mm TQFN

Product Description
1. Fast USB SPI 360 NAND programmer.
2. Fully compatible with XBOX 360 NAND models.
3. Fully compatible with NandPro2.0e software and other third-party software.
4. Can be easily reprogrammed via USB connector.
5. Fast read and write time.
6. Microchip based for enhanced stability
Specification:
Product size: 41*34*5mm/1.61*1.34*0.20"
Note:
1. There may be slight size deviations due to manual measurement, different measuring methods and tools.
2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.

Product Description
Non-contact magnetic induction angle measurement module.
High precision, multiple output modes: IIC, PWM, voltage, etc.
Electrical parameters:
VCC 3.3V
GND power ground
Out PWM/analog voltage output
DIR rotation direction (grounded = clockwise value increases; connected to VCC = clockwise value decreases)
SCL IIC communication clock line
SDA IIC communication data line
GPO mode selection (internal pull-up, ground = programming mode B)

Pecification:
100% brand new and high quality
The HTU21D is a low-cost, easy to use, highly accurate, digital humidity and temperature sensor. This sensor is ideal for environmental sensing and data logging and perfect for a weather stations or humidor control systems. All you need is two lines for I2C communication and youâll have relative humidity readings and very accurate temperature readings as a bonus!
There are only four pins that need to be hooked up in order to start using this sensor in a project. One for VCC, one for GND, and two data lines for I2C communication. This breakout board has built in 4.7k pull up resistors for I2C communications. If youâre hooking up multiple I2C devices on the same bus, you may want to disable these resistors
Power supply: 1.5V-3.6V
Humidity measure range: 0-100% RH
Temperature measure range:-40degree105degree
Max. power consumption: 2.7uW
Communication: I2C
Humidity precision(10% RH to 95% RH): HTU21D±2% RH
Humidity delay: /-1% RH
Measure time: 50ms
Year drift: -0.5% RH/year
Response time: 5s
Size: 1.5x1.5cm(approx)

Description
Based on ESP-8266EX
for arduino compatible, use for arduino IDE programming
11 x I/O pins
1 x ADC pin (input range 0-3.3V)
Support OTA wireless upload
Onboard 5V 1A switching power supply (maximum input voltage 24V)
After installing the hardware package,
Develop directly using arduino IDE, and operate arduino in the same way
Features:
1. Support D1 MINI
2. Compatible with ar-duino, use ar-duino IDE for programming
3.11 XI/O pin
4.1 XADC pin (0-3.3-V)
5. Support OTA online

Product Description
Single chip microcomputer TTL to RS485 module 485 to serial port UART level mutual conversion Hardware automatic flow control

RS485 automatic flow control module compatible with 3.3V and 5.0V power and signal
No need to "receive-send" control, using this module is as easy as operating the serial port



This transparent transmission module realizes the mutual conversion of TTL signal and RS485 signal, but everyone must know that 485 is half-duplex communication. This communication method can realize two-way communication, but it cannot be carried out in both directions at the same time. Take turns alternately; that is, each end of the communication channel can be the sender or the receiver, but at the same time, information can only have one direction of transmission.
Baud rate: 110~256000bps, perfect support
Module highlights:
(1) Compatible with 3.3V and 5.0V power supply
(2) 3.3V and 5.0V signal compatible
(3) Absolutely adopt original imported chips, industrial-grade design, strong anti-interference ability, and adopt more effective 485 lightning protection design, which can be used in industrial sites and harsh environments in the field, and the working temperature is -40℃ to 85℃, the transmission distance can be up to kilometers (use 850 meters of 2*1.5 cable to do the test, it is recommended to use within 800 meters, more than 800 meters, please add a repeater)
(4) The half-hole process design is adopted, and the thickness of the board is 0.8mm, which can be easily used as a mother board or as a solder terminal.
(5) With RXD and TXD signal indicators, you can have a panoramic view of the transceiver status

Product Description
100% brand new and high quality
AC / DC, 2.0 / dual channel / stereo,12V/2A when using, the output power of 15W 15 W, peak up 25W 25 W
Can be accessed by two 4-8Ω 10-50W speakers
A large volume of small size
High signal to noise ratio
Upgraded version of the radiator, wider and thicker, better cooling effect
Fit for Bookshelf speakers, CRT televisions, radios, and other small amplifiers
Specification:
Working voltage: DC 9-15V
Power: 15W 15 W
Maximum power:30W 30W
Output Impedance: 4-8Ω
Package Included:
1 x TDA7297 Version Amplifier Board
Note:
The size is just for reference, there maybe exist a measurement error, please check carefully before you buy it.
Color may vary slightly due to different calibration of each monitor.

Product Description
For precision temperature sensing, nothing beats a Platinum RTD. Resistance temperature detectors (RTDs) are temperature sensors that contain a resistor that changes resistance value as its temperature changes, basically a kind of thermistor. In this sensor, the resistor is actually a small strip of Platinum with a resistance of 100 ohms at 0°C, thus the name PT100. Compared to most NTC/PTC thermistors, the PT type of RTD is much most stable and precise (but also more expensive) PT100's have been used for many years to measure temperature in laboratory and industrial processes, and have developed a reputation for accuracy (better than thermocouples), repeatability, and stability.
However, to get that precision and accuracy out of your PT100 RTD you must use an amplifier that is designed to read the low resistance. Better yet, have an amplifier that can automatically adjust and compensate for the resistance of the connecting wires. If you're looking for a great RTD sensor, today is your lucky day because we have a lovely Ours RTD Sensor Amplifier with the MAX31865 breakout for use with any 2, 3 or 4 wire PT100 RTD!
We've carried various MAXIM thermocouple amplifiers and they're great - but thermocouples don't have the best accuracy or precision, for when the readings must be as good as can be. The MAX31865 handles all of your RTD needs, and can even compensate 3 or 4 wire RTDs for better accuracy. Connect to it with any microcontroller over SPI and read out the resistance ratio from the internal ADC. We put a 430Ω 0.1% resistor as a reference resistor on the breakout. We have some example code that will calculate the temperature based on the resistance for you.
We even made the breakout 5V compliant, with a 3.3V regulator and level shifting, so you can use it with any for For Ard uino or microcontroller.
Each order comes with one assembled RTD amplifier breakout board. Also comes with two 2-pin terminal blocks (for connecting to the RTD sensor) and pin header (to plug into any breadboard or perfboard). A required PT100 RTD is not included! (But we stock them in the shop). Some soldering is required to solder the headers and terminal blocks to the breakout, but it's an easy task with soldering tools.
Features and benefits
1. Support 100Ω to 1kΩ (0°C) platinum resistance RTD (PT100 to PT1000);(The Module resistor uses 430R)
2. Compatible with 2-wire, 3-wire and 4-wire sensor connections;
3. SPI compatible interface;
4.15-bit ADC resolution with a nominal temperature resolution of 0.03125 °C (variable with RTD nonlinearity);
5. The total accuracy is maintained at 0.5 ° C (0.05% of full scale) under the entire working conditions;
6 fully differential VREF input;
7. Conversion time: 21ms (maximum);
8. Integrated fault detection to increase system stability: (RTD open circuit, RTD short circuit to voltage outside the range or short circuit of RTD components).

Product Description
For precision temperature sensing, nothing beats a Platinum RTD. Resistance temperature detectors (RTDs) are temperature sensors that contain a resistor that changes resistance value as its temperature changes, basically a kind of thermistor. In this sensor, the resistor is actually a small strip of Platinum with a resistance of 100 ohms at 0°C, thus the name PT100. Compared to most NTC/PTC thermistors, the PT type of RTD is much most stable and precise (but also more expensive) PT100's have been used for many years to measure temperature in laboratory and industrial processes, and have developed a reputation for accuracy (better than thermocouples), repeatability, and stability.
However, to get that precision and accuracy out of your PT100 RTD you must use an amplifier that is designed to read the low resistance. Better yet, have an amplifier that can automatically adjust and compensate for the resistance of the connecting wires. If you're looking for a great RTD sensor, today is your lucky day because we have a lovely Ours RTD Sensor Amplifier with the MAX31865 breakout for use with any 2, 3 or 4 wire PT100 RTD!
We've carried various MAXIM thermocouple amplifiers and they're great - but thermocouples don't have the best accuracy or precision, for when the readings must be as good as can be. The MAX31865 handles all of your RTD needs, and can even compensate 3 or 4 wire RTDs for better accuracy. Connect to it with any microcontroller over SPI and read out the resistance ratio from the internal ADC. We put a 430Ω 0.1% resistor as a reference resistor on the breakout. We have some example code that will calculate the temperature based on the resistance for you.
We even made the breakout 5V compliant, with a 3.3V regulator and level shifting, so you can use it with any for For Ard uino or microcontroller.
Each order comes with one assembled RTD amplifier breakout board. Also comes with two 2-pin terminal blocks (for connecting to the RTD sensor) and pin header (to plug into any breadboard or perfboard). A required PT100 RTD is not included! (But we stock them in the shop). Some soldering is required to solder the headers and terminal blocks to the breakout, but it's an easy task with soldering tools.
Features and benefits
1. Support 100Ω to 1kΩ (0°C) platinum resistance RTD (PT100 to PT1000);(The Module resistor uses 430R)
2. Compatible with 2-wire, 3-wire and 4-wire sensor connections;
3. SPI compatible interface;
4.15-bit ADC resolution with a nominal temperature resolution of 0.03125 °C (variable with RTD nonlinearity);
5. The total accuracy is maintained at 0.5 ° C (0.05% of full scale) under the entire working conditions;
6 fully differential VREF input;
7. Conversion time: 21ms (maximum);
8. Integrated fault detection to increase system stability: (RTD open circuit, RTD short circuit to voltage outside the range or short circuit of RTD components).

Note: The button hat color is sent randomly
1. The rated range: 50 ma 12 VDC
2. Contact resistance: 50 m Ω Max (initial)
3. The insulation resistance: 100 m Ω minDC (250 v)
4. The compressive strength: AC250V (50/60 hz for 1 minute)
5. Mechanical life: 100000 cycles
6. The environment temperature: 25 ° ~ 105 °
7. The operating strength: 180/250 (plus or minus 30 gf)
12 * 12 * 7.3 round convex type

Product description
Conversion can use a few chips is 1.8 V, such as winbond w25q64, macro mx25u1635 flourishing, mx25u6435 etc to burn written in 3.3 V programmer for conversion. These chips are normally used for apple computer motherboard.

Applicable as main 1.8 V chip:
winbond
W25q10ew w25q20ew, w25q20bw w25q40ew, w25q40bw, w25q80ew, w25q80bw, w25q16dw, w25q16fw, w25q32dw, w25q32fw, w25q64dw, w25q64fw, w25f128fw
In the macro
Mx25u5121e mx25r512f, mx25u1001e mx25r1035f, mx25u2033e, mx25r2035f, mx25u4035,
Mx25u4033e mx25u4032e, mx25r4035f mx25u8035, mx25u8035e, mx25u8033e, mx25u8032e,
Mx25r8035f mx25u1635e, mx25v1635f mx25u1635f, mx25r1635f, mx25u3235e, mx25u3235f,
Mx25r3235f mx25u6473f, mx25u6435f mx25r6435f, mx25u12873f, mx25u12835f,
Mx25u25635f mx25u51245g, mx25um51245g mx66u51235f
Such as...

Product Description
The ESP-12 module is one of the most complete of the ESP family as it allows you to use biggest amount of pins. You can program this module to work stand alone with the For Arduino IDE or NodeMCU.
It has an LDR and a WS2812 LED already on board for your projects. The board comes with a CH40 micro USB module to program it.
The ESP8266 is a highly integrated chip, including antenna and power management converter. The system is equipped with ESP8266 and it's features are: energy saving VoIP quickly switch between the sleep / wake patterns, with low-power operation adaptive radio bias, front-end signal processing functions.
This version, the ESP8266-03 is one of the smallest versions of this module. It includes a buil-in ceramic antenna.
Specifications:
LDR Lignt Sensor on board
WS2812 Led on board
3x tactile buttons (1x in the Witty board and 2x in theCH340 board)
Supports 3 modes: AP,STA,AP STA
Dimensions: 24mm x 16mm
Micro USB connection for power and/or programming

Introduction
AT89C2051-based of four electronic clock kit
Kit Model: YSZ-4
Supply voltage: 3V-6V
PCB Size: 52mm * wide 42mm
Function:
1. Seconds correction (for precise School)
2. Switch to every minute independent display interface
3. whole point of time (8-20 o\'clock chime can be turned off)
4. Two alarm settings (you can turn off the alarm function)
Kit Features:
A. 0.56 inch special red digital clock for display;
B. Import AT89C2051 for master chip;
C.1.2mm thick PCB made from military grade FR-4 board;
D. accurate travel time, travel time error range error -1 to 1 seconds every 24 hours.
Package included:
100% Brand New
1x Electronic Clock DIY Kits
NOTE:
This produce is DIY kits, not the end product! We don\'t provide technical assistance please make sure you are familiar with the product before purchasing.

Description
Program-controlled switches, photocopiers, washing machines, refrigerators, cameras, disinfection cupboards, door magnets, window magnets, electromagnetic relays, electronic weighing instruments, liquid level gauges, gas meters, water meters, etc. have all been well used.
Module features:
1. Imported normally open reed switch
2. Comparator output, clean signal, good waveform, strong driving ability, more than 15mA.
3. Working voltage 3.3V-5V
4. Output form: digital switch output (0 and 1)
5. Equipped with fixing bolt holes for easy installation
6. Small board PCB size: 3.2cm x 1.4cm
7. Use wide voltage LM393 comparator
Features of Reed Pipe:
Dry reed switch is the abbreviation of dry reed switch. It is a passive electronic switching element with contacts. It has the advantages of simple structure, small size and easy control. Its shell is generally a sealed glass tube, which is installed in the tube. There are two iron elastic reed plates, and it is filled with an inert gas called rhodium. Usually, the two reeds made of special materials in the glass tube are separated. When a magnetic substance approaches the glass tube, under the action of the magnetic field lines, the two reeds in the tube are magnetized and attracted to each other, and the reeds will attract together to connect the circuit connected to the node. After the external magnetic force disappears, the two reeds are separated due to their own elasticity, and the circuit is also disconnected. Therefore, as a line switch device controlled by a magnetic field signal, the reed switch can be used as a sensor for counting, limiting, etc. (in the security system, it is mainly used for the production of door and window magnets). It is widely used in various communication devices. In practical applications, permanent magnets are usually used to control whether the two metal pieces are connected or not, so they are also called "magnetrons."
Module instructions:
1. The reed switch needs to be used in conjunction with a magnet. When a certain magnetic force is sensed, it will be in a conducting state. The module will output low level. When there is no magnetic force, it will be in a disconnected state and output high level. The sensing distance between the magnet and the magnet is within 1.5cm. It is not sensitive or there will be no trigger phenomenon;
2. The DO output of the module can be directly connected to the I/O port of the single-chip microcomputer, and the trigger state of the reed switch can be detected through the single-chip microcomputer;
3. The DO output terminal of the module is connected with the IN terminal of the relay to form a high-power reed switch, which directly controls high voltage.

Product Description
CJMCU-219 is a module with the I2C interface of zero drift and bi-directional current/power monitoring and control integrated circuit (IC), further expand the TI energy-saving electronic products.INA219 has the industry's highest precision and the small size, not only can monitor the pressure drop on the shunt resistor, sensing shunt power supply voltage, at the same time also can calculate the power.The device adopts the SOT23 packaging, but for the server, notebook computer, power supply, battery management and digital electric vehicle and telecommunication equipment measuring flu provide small, low cost solution.

INA219-40 c to 85 c temperature range and can realize the maximum error of 1% accuracy, maximum offset of 100 uV.The advantage of the high precision of the product in combination with 12 resolution, can help clients as much as possible, reduce the pressure drop on the shunt resistor, which can minimize the power loss and power consumption, and saving board space.The device epic of 26 bus voltage range of 0 V to 26 V.

INA219 other important features include:
Calibration programmable registers can directly read its unit of measure is the ampere current, and power in watts per read. For as many as 128 sampling averaging, in order to realize filter in noise environment. The I2C interface has a timeout, not only can avoid the bus lock, but also can provide high-speed mode, meet the communication requirements of up to 3.4 MHz. All features are support software programmable INA219. Using single power supply, the working voltage between 3.0 to 5.5 V.

Describe
XH-M228 Dual Channel Digital Audio Stereo Amplifier Module TPA3110 Mini Binaural Speaker Power Amplifier Board
Feature:
1. This power amplifier board must be powered by DC, requiring a good performance switching power adapter.
2. Can not use AC transformer, if use AC transformer, must pass through rectifier, filter circuit into pure DC that can be used.
3. DC power supply: voltage DC12V-24V/current power greater than 2A, must distinguish positive/negative poles, do not exceed DC24V voltage to use, otherwise it will burn IC chips.
4. It can connect the speaker or speaker 4ohm or 8ohm, and the power is between 10W and 80W, depending on the size of the power supply, which determines the power of the speaker.
Specification:
Size: 38*28*3mm/1.49*1.1*0.11''
Note:
Please allow 1-3cm differs due to manual measurement.
Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.

Product Description
TRRS 3.5mm Jack Breakout Headset Audio Stereo Microphone Jack Interface Module
Plugs for high temperature resistant copper environmental protection materials
TRRS 3.5mm Jack Breakout
Stereo headphone jack, audio stereo socket, MP3 socket breadboard expansion module
Leads to the left channel, right channel, ground, and plug detection line.

Electronic building blocks Dual PS2 game joystick button module JoyStick compatible with R3

Description
Chip: MAX3232CSE
Voltage range: 3V~5V
Baud rate: It is recommended not to be higher than 120kbps
Size: 9.0mm*1.8mm
The following is a diagram of the front and back of the module. The power supplies on both sides are connected together.
Just connect one side, two independent channels on both sides can be used,
One side is the TX and RX channels of RS232, and the other side is the TX and RX channels of TTL
Road, near RS232 character end is RS232 level, close to TTL character end is
TTL level.

100pcs 1/4W 10ohm-1M 1% Metal Film Resistor

100pcs 1/4W 10ohm-1M 1% Metal Film Resistor

100pcs 1/4W 10ohm-1M 1% Metal Film Resistor

100pcs 1/4W 10ohm-1M 1% Metal Film Resistor

100pcs 1/4W 10ohm-1M 1% Metal Film Resistor

100pcs 1/4W 10ohm-1M 1% Metal Film Resistor

100pcs 1/4W 10ohm-1M 1% Metal Film Resistor

100pcs 1/4W 10ohm-1M 1% Metal Film Resistor

100pcs 1/4W 10ohm-1M 1% Metal Film Resistor

100pcs 1/4W 10ohm-1M 1% Metal Film Resistor

100pcs 1/4W 10ohm-1M 1% Metal Film Resistor

100pcs 1/4W 10ohm-1M 1% Metal Film Resistor

100pcs 1/4W 10ohm-1M 1% Metal Film Resistor