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TTP223 Description:
1. Type: voltage regulator 2. Supply voltage: 2 ~ 5.5V 3. Model Number: TTP223B Digital Touch Sensor 4. Application: Digital touch sensor

TTP224 Description:
1, 4 key-board TTP224 capacitive touch sensor IC 2, 4-way board-level status indicator 3, working voltage: 2.4V-5.5V 4, the module can be set to output mode, the key output mode, the longest time and fast output / low power options 5, PCB board size: 35 (mm) x29 (mm)
TTP226 Description:
1, 8 key board TTP226 capacitive touch sensor IC 2, onboard 8-level status indicator 3, working voltage: 2.4V-5.5V 4, the module can be set to output mode, the key output mode, the longest time and fast output / low power options 5, PCB board size: 47.5 (mm) x46 (mm)

TTP229 Description:
1, onboard TTP229 capacitive touch sensor IC 16 keys 2, onboard power indicator 3, working voltage: 2.4V-5.5V 4, the module can be set to output mode, the key output mode, the longest time and fast output / low power options 5, PCB board size: 49.3 (mm) x64.5 (mm)

TTP223 Description:
1. Type: voltage regulator 2. Supply voltage: 2 ~ 5.5V 3. Model Number: TTP223B Digital Touch Sensor 4. Application: Digital touch sensor

TTP224 Description:
1, 4 key-board TTP224 capacitive touch sensor IC 2, 4-way board-level status indicator 3, working voltage: 2.4V-5.5V 4, the module can be set to output mode, the key output mode, the longest time and fast output / low power options 5, PCB board size: 35 (mm) x29 (mm)
TTP226 Description:
1, 8 key board TTP226 capacitive touch sensor IC 2, onboard 8-level status indicator 3, working voltage: 2.4V-5.5V 4, the module can be set to output mode, the key output mode, the longest time and fast output / low power options 5, PCB board size: 47.5 (mm) x46 (mm)

TTP229 Description:
1, onboard TTP229 capacitive touch sensor IC 16 keys 2, onboard power indicator 3, working voltage: 2.4V-5.5V 4, the module can be set to output mode, the key output mode, the longest time and fast output / low power options 5, PCB board size: 49.3 (mm) x64.5 (mm)

TTP223 Description:
1. Type: voltage regulator 2. Supply voltage: 2 ~ 5.5V 3. Model Number: TTP223B Digital Touch Sensor 4. Application: Digital touch sensor

TTP224 Description:
1, 4 key-board TTP224 capacitive touch sensor IC 2, 4-way board-level status indicator 3, working voltage: 2.4V-5.5V 4, the module can be set to output mode, the key output mode, the longest time and fast output / low power options 5, PCB board size: 35 (mm) x29 (mm)
TTP226 Description:
1, 8 key board TTP226 capacitive touch sensor IC 2, onboard 8-level status indicator 3, working voltage: 2.4V-5.5V 4, the module can be set to output mode, the key output mode, the longest time and fast output / low power options 5, PCB board size: 47.5 (mm) x46 (mm)

TTP229 Description:
1, onboard TTP229 capacitive touch sensor IC 16 keys 2, onboard power indicator 3, working voltage: 2.4V-5.5V 4, the module can be set to output mode, the key output mode, the longest time and fast output / low power options 5, PCB board size: 49.3 (mm) x64.5 (mm)

TTP223 Description:
1. Type: voltage regulator 2. Supply voltage: 2 ~ 5.5V 3. Model Number: TTP223B Digital Touch Sensor 4. Application: Digital touch sensor

TTP224 Description:
1, 4 key-board TTP224 capacitive touch sensor IC 2, 4-way board-level status indicator 3, working voltage: 2.4V-5.5V 4, the module can be set to output mode, the key output mode, the longest time and fast output / low power options 5, PCB board size: 35 (mm) x29 (mm)
TTP226 Description:
1, 8 key board TTP226 capacitive touch sensor IC 2, onboard 8-level status indicator 3, working voltage: 2.4V-5.5V 4, the module can be set to output mode, the key output mode, the longest time and fast output / low power options 5, PCB board size: 47.5 (mm) x46 (mm)

TTP229 Description:
1, onboard TTP229 capacitive touch sensor IC 16 keys 2, onboard power indicator 3, working voltage: 2.4V-5.5V 4, the module can be set to output mode, the key output mode, the longest time and fast output / low power options 5, PCB board size: 49.3 (mm) x64.5 (mm)

Description
Stepper motors are usually defined with step angle or step number parameters. Generally, one revolution of the motor is divided into 200 steps, that is, the step angle is 1.8 degrees. EasyDriver has the step distance subdivision function, which is the subdivision of this driver board. It is 8 subdivision, that is, each step of the motor is subdivided into 8 small steps, so that more precise control can be obtained, which means that EasyDriver needs 1600 steps to complete a complete 360-degree rotation.
ms1 and ms2 are the logic input ports for stepping motor subdivision resolution selection;
dir is the selection port of the motor rotation direction;
reset is used to reset the initial value of the chip and shield all external outputs;
step is the pulse input port;
out1a, out1b, out2a, and out2b are two pairs of output ports of the h bridge;
enable is the enable terminal;
sleep is the sleep mode;
sense1 and sense2 are the current detection resistors of the h bridge;
ref is the reference voltage;
gnd is logic ground and power ground;

rc1 and rc2 are analog inputs for the h-bridge fixed cut-off time.
a3967slb is a special driver for pwm constant current control micro stepping two-phase stepping motor produced by allegro company in the United States. Its working voltage can reach 30v, and the drive current can reach 750ma. One a3967slb can drive a two-phase stepper motor, which can realize 8 subdivision drive. The pwm current control circuit inside the chip can be set to three current decay modes: slow, fast, and mixed by the voltage applied to the pfd. If the voltage at the pfd end is higher than 0.6vdd, the slow decay mode is selected. If it is lower than 0.21vdd, select fast decay mode. In between is the mixed decay mode. In addition, a3967slb can also provide complete protection measures, including suppression of transient voltage, overheating protection, prevention of current through, under-voltage self-locking and other functions.
There is no need to add other interface circuits between a3967slb and the microprocessor, the chip adopts easystepper
The interface reduces the 8 control lines by 2 (step length and direction). As long as the pulse for controlling the stepper motor is simply input, the built-in converter can realize the control of the stepper motor.
a3967slb also needs some resistors and capacitors to adjust its working parameters, the whole drive circuit is very simple

10cm 3kinds 120pcs
20cm 3kinds 120pcs
20cm 3kinds 120pcs

10cm 3kinds 120pcs
20cm 3kinds 120pcs
20cm 3kinds 120pcs

10cm 3kinds 120pcs
20cm 3kinds 120pcs
20cm 3kinds 120pcs

Description:
The EasyDriver is a simple to use stepper motor driver, compatible with anything that can output a digital 0 to 5V pulse (or 0 to 3.3V pulse if you solder SJ2 closed on the EasyDriver). EasyDriver requires a 7V to 30V supply to power the motor and can power any voltage of stepper motor. The EasyDriver has an on board voltage regulator for the digital interface that can be set to 5V or 3.3V. Connect a 4-wire stepper motor and a microcontroller and you've got precision motor control! EasyDriver drives bi-polar motors, and motors wired as bi-polar. I.e. 4,6, or 8 wire stepper motors. On this version (v4.4) we fixed the silk error on the min/max adjustment.
This is the newest version of EasyDriver V4 co-designed withBrian Schmalz. It provides much more flexibility and control over your stepper motor, when compared to older versions. The microstep select (MS1 and MS2) pins of the A3967 are broken out allowing adjustments to the microstepping resolution. The sleep and enable pins are also broken out for further control.cjmcu made.
Note:Do not connect or disconnect a motor while the driver is energized. This will cause permanent damage to the A3967 IC.
Note:This product is a collaboration with Brian Schmalz. A portion of each sales goes back to them for product support and continued development.
Features:
A3967 microstepping driver
MS1 and MS2 pins broken out to change microstepping resolution to full, half, quarter and eighth steps (defaults to eighth)
Compatible with 4, 6, and 8 wire stepper motors of any voltage
Adjustable current control from 150mA/phase to 750mA/phase
Power supply range from 7V to 30V. The higher the voltage, the higher the torque at high speeds

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 include:50pcs SYB-170 Mini Solderless Breadboard

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 include:50pcs SYB-170 Mini Solderless Breadboard

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 include:50pcs SYB-170 Mini Solderless Breadboard

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 include:50pcs SYB-170 Mini Solderless Breadboard

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 include:50pcs SYB-170 Mini Solderless Breadboard

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 include:50pcs SYB-170 Mini Solderless Breadboard

1 Channel Solid State Relay
5V solid state relay 240V 2A, output with resistive fuse 240V 2A
Size: 24*32*21mm/0.94*1.25*0.82”
Input Power: 5V DC (160mA)
Input control signal voltage:
0-2.5V state low relay
Input section:
DC : positive power supply (by relay voltage power supply)
DC-: connect power negative
CH: relay module signal to trigger the end (Low level trigger effective)
Voltage version 5V
Static current 0mA
Working current 12.5mA
Trigger voltage 3.3-5V
Trigger current 2m

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

4 Channel Solid State Relay
5V solid state relays 240V 2A, output with resistive fuse 240V 2A.
Input power supply: 5V DC (160MA)
Input control signal voltage:
0-2.5V low state relay
Blue KF301 terminal connection control line is more convenient.
Module interface:
DC : positive power supply (by relay voltage power supply)
DC-: connect power negative
CH: Relay Module signal triggering end (Low level trigger effective)
Note: Power must be DC voltage and need to be consistent with the voltage relay.

1 Channel Solid State Relay
5V solid state relay 240V 2A, output with resistive fuse 240V 2A
Size: 24*32*21mm/0.94*1.25*0.82”
Input Power: 5V DC (160mA)
Input control signal voltage:
0-2.5V state low relay
Input section:
DC : positive power supply (by relay voltage power supply)
DC-: connect power negative
CH: relay module signal to trigger the end (Low level trigger effective)
Voltage version 5V
Static current 0mA
Working current 12.5mA
Trigger voltage 3.3-5V
Trigger current 2m

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

4 Channel Solid State Relay
5V solid state relays 240V 2A, output with resistive fuse 240V 2A.
Input power supply: 5V DC (160MA)
Input control signal voltage:
0-2.5V low state relay
Blue KF301 terminal connection control line is more convenient.
Module interface:
DC : positive power supply (by relay voltage power supply)
DC-: connect power negative
CH: Relay Module signal triggering end (Low level trigger effective)
Note: Power must be DC voltage and need to be consistent with the voltage relay.

1 Channel Solid State Relay
5V solid state relay 240V 2A, output with resistive fuse 240V 2A
Size: 24*32*21mm/0.94*1.25*0.82”
Input Power: 5V DC (160mA)
Input control signal voltage:
0-2.5V state low relay
Input section:
DC : positive power supply (by relay voltage power supply)
DC-: connect power negative
CH: relay module signal to trigger the end (Low level trigger effective)
Voltage version 5V
Static current 0mA
Working current 12.5mA
Trigger voltage 3.3-5V
Trigger current 2m

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

4 Channel Solid State Relay
5V solid state relays 240V 2A, output with resistive fuse 240V 2A.
Input power supply: 5V DC (160MA)
Input control signal voltage:
0-2.5V low state relay
Blue KF301 terminal connection control line is more convenient.
Module interface:
DC : positive power supply (by relay voltage power supply)
DC-: connect power negative
CH: Relay Module signal triggering end (Low level trigger effective)
Note: Power must be DC voltage and need to be consistent with the voltage relay.

Description:
This Adapter Supports Connect Devices That Use A 3.5mm Audio Plug to Your Type C Devices Which Have No Headphone Jack.  
Just Plug And Play, No Install Needed.  
We Suggested That You Put The Headphone to The Type-C 3.5mm Adapter First, and Then Connect to Your Type-C Devices.  
High Quality 3.5mm Audio Headphone Jack Cable, Life Time Warranty and Customer Support
- You Can Fully Enjoy Your Favorite Music And Charge Simultaneous.
-  Light and Easy to Carry Around.
- Type-C Interface Supports A Higher Current Level to Speed Up The Charge of The Device.
- You Can Use It Pause Audio Play And Answer The Phone, But Can't Adjust The Volume.
Specifications:
specification:
Name: 2 In 1 Combo Earphone Audio Transfer Cable
Material: Metal
Quantity: 1pc
Color: Black/ Gold/ Silver/ Silver/ Red
Features: Superior Quality Composed of plastic and metal, eco-friendly, plug is coated with painting, touch smooth, durable, long service life.
Package Included:
1*2 In 1 Type C to 3.5mm And Charging Cable

Description:
1. Function: three in one 2. magnetic USB plug storage 3. Suitable for the first generation magnetic plug  and 3pin magnetic plug 4. Storage capacity: 3 plugs 5. Easy to carry,not easy to lose 6.Three different types of magnetic heads can be placed at the same time 7.Can slide freely on the data line. 8.Press gently into the storage silicone，squeeze into the esign,ang hold firmly
Specifications:
Product parameters Product name: magnetic USB plug storage device Product size: 12 ×45x 11.5mm Material: Liquid Silicone Weight: 7g Colour: Black
Package Included:
1*magnetic USB plug storage device

Descriptions:
100% brand new and high quality
Extremely portable and fits in any bag or pocket.
Foldable design, light weight, easy to take on the go.
Non skid material on base keeps the stand secure on flat surfaces.
It would make your web surfing, e-book reading, video watching more convenient.
Suitable for Apple iPad, other tablet PC and phones with large screen, which screen should smaller than 10".
It can be used in office, coffee house, classroom, park, plane, etc.
Specification:
Type

Tablet Bracket
Material

ABS
Quantity

1pcs
Item Color

Black / White
Compatible with

Tablet and mobile phone with diaplay less than 10"
Foldable Size

3.1*2.3*18.5cm
Net Weight

85g
 
Package Includes:
1 x Tablet Bracket
 Note:
Please allow 1-3cm errors to the actual dimension due to manual measurement! Thank you !
Real color may slightly different from pictures due to computer screen's resolution, brightness, contrast etc. 
If you have any question, please contact us before leave negative feedback, we will try our best to serve you, thank you for your understanding!
HOPE YOU HAVE A NICE SHOPPING!

Descriptions:
100% brand new and high quality
Extremely portable and fits in any bag or pocket.
Foldable design, light weight, easy to take on the go.
Non skid material on base keeps the stand secure on flat surfaces.
It would make your web surfing, e-book reading, video watching more convenient.
Suitable for Apple iPad, other tablet PC and phones with large screen, which screen should smaller than 10".
It can be used in office, coffee house, classroom, park, plane, etc.
Specification:
Type

Tablet Bracket
Material

ABS
Quantity

1pcs
Item Color

Black / White
Compatible with

Tablet and mobile phone with diaplay less than 10"
Foldable Size

3.1*2.3*18.5cm
Net Weight

85g
 
Package Includes:
1 x Tablet Bracket
 Note:
Please allow 1-3cm errors to the actual dimension due to manual measurement! Thank you !
Real color may slightly different from pictures due to computer screen's resolution, brightness, contrast etc. 
If you have any question, please contact us before leave negative feedback, we will try our best to serve you, thank you for your understanding!
HOPE YOU HAVE A NICE SHOPPING!

Description:
100% Brand New and High Quality!
Tip: Reverse the potentiometer 20 times before taking the goods to test!
Pressure regulation
Facing the chest, the potentiometer turns counterclockwise to boost!
Some customers report that the output voltage of the module cannot be adjusted and is always equal to the input voltage. When you encounter this kind of problem, please turn the potentiometer counterclockwise more than 10 turns, and then use the module to adjust the voltage normally.
Method of use
The module of the IN and - after 2~24v, IN adjusting the potentiometer can adjust output voltage, output voltage is greater than the input voltage
Matters needing attention
1). The input voltage should not exceed the maximum input voltage
2). The peak current output current is no more than TV university
Specifications:
Electrical characteristics
1). The maximum output current: 2 a
2). The input voltage: 2 v ~ 24 v
3). The maximum output voltage: 28 v
4). Efficiency: ＞93%
Mechanical properties
1). product size: 36 mm X 17 mm X 14 mm
Package Included:
1 x MT3608 DC-DC Step Up Power Apply Module Booster Power Module MAX output 28V

Item description
 
Condition: Brand New
Quantity: 1PCS  
 
Wholesale: Offer Wholesale price
 
Color: See the picture (The Real Item's Color which you receive maybe vary from the listing picture because of different Camera lens, and different light  envirornment. Thanks for your understanding!)

Item description
 
Condition: Brand New
Quantity: 1PCS  
 
Wholesale: Offer Wholesale price
 
Color: See the picture (The Real Item's Color which you receive maybe vary from the listing picture because of different Camera lens, and different light  envirornment. Thanks for your understanding!)

Item description
 
Condition: Brand New
Quantity: 1PCS  
 
Wholesale: Offer Wholesale price
 
Color: See the picture (The Real Item's Color which you receive maybe vary from the listing picture because of different Camera lens, and different light  envirornment. Thanks for your understanding!)

Item description
 
Condition: Brand New
Quantity: 1PCS  
 
Wholesale: Offer Wholesale price
 
Color: See the picture (The Real Item's Color which you receive maybe vary from the listing picture because of different Camera lens, and different light  envirornment. Thanks for your understanding!)

Description:
Material: PVC
Color: white
Working voltage:110-265V
Load power: 40W
Working temp: -20 ℃ - 40 ℃
Static current: ＜ 50μA
Time delay: 45s
Light control: 3Lux~6Lux
Output mode: sensor output
Induction angle: 110 ° cone shape
Induction distance: 4-6M
(Note: Please allow about 1mm error due to manual measurement, and slight color difference caused by light and screen.)
Specifications:
100% brand new and high quality.
Small, lightweight, easy to install and operate, plug and play.
Automatic ventilation exhaust fan and other electrical automatic control and other functions.
Auto switch on/off in the dark when you enter into the induction range, and it may have 45s time delay.
Suitable for auto lighting corridors, corridor, bathrooms, basements, warehouses, garages,closet, advertisement light box, and other
places.
Package Included:
1*Induction head
1*nut
1*pair wiring
 

Description:
Feature:
- Powerful heat sink: The cooling fan prevents the phone from overheating while playing the game console, extending the life of the phone and battery.
- Water-cooled radiator: Compared with other coolers, this radiator game can be used for half an hour and can cool 10~30°C. It can effectively solve the problem of fever or power failure when using a mobile phone.
- Applicable to all models of for iPhone / Android phone / tablet with a width of 65-85mm. Play a variety of games without worrying about fever.
- The cooling radiator is powerful and equipped with a 1.5m USB data cable. Plug in the power to automatically turn on, and instantly cool.
- Light weight and convenient, silicone mat on the edge of the cooler. Firmly absorb the phone to avoid the phone falling off and scratching.
Specifications:
Name: Mobile Phone Radiator
Model: DL01
Input voltage / current: 5V
Input current: 1.5A-2A
Speed: 7500
Material: ABS
Colour: black
Charging interface: Micro
Model: width is about 65-85mm/2.56-3.35in
Size: about 80*64*35mm/3.15*2.52*1.38in
Weight: about 135g
Package Included:
1* Radiator
1* 1.5m micro charging cable
1* Manual

Description:
The Adapter cable can convert USB-C to the 3.5mm Audio, it is perfectly suitable for Type-C Phones, Tablets, PC (Except the HTC Bolt).
Charging and Music the Same Time:2 in 1 cable supports simultaneous charging and audio output, so you can enjoy the music while charging. Note: No Music Control.
More compatibility: Motorola Moto Z, Motorola Moto Z Droid, Motorola Moto Z Force, Motorola Moto Z Play, LeEco Le 2, LeEco Le 2s, LeEco Le Max, LeEco Le S3, LeEco Le 3, LeEco Le Max 2, LeEco Le 2 , LeEco Le 3 Elite, Xiaomi 6 Nubio Z17.
Can not work with HTC series.
Specifications:
specification:
Product Name: Type-c 2-in-1 audio patch cord
Color: gold, rose gold, black, silver
Weight: about 8.5g
Function: Call Charging Listening to songs
Transfer is faster and more convenient. Fine workmanship, high quality wire, soft and durable
Connector A: 3.5mm audio female; USB Type-C female
Connector B: USB Type-C male
Material: aluminum alloy shell nylon braided wire
Process: New one-piece head High hardness High strength
Current: over 2A current, tinned copper core, charging, more stable transmission
Note: It is mainly suitable for type c mobile phones without 3.5MM headphone jack.
Package Included:
1 x 2In1 USB Type-C Adapter Cable

Description:
The Adapter cable can convert USB-C to the 3.5mm Audio, it is perfectly suitable for Type-C Phones, Tablets, PC (Except the HTC Bolt).
Charging and Music the Same Time:2 in 1 cable supports simultaneous charging and audio output, so you can enjoy the music while charging. Note: No Music Control.
More compatibility: Motorola Moto Z, Motorola Moto Z Droid, Motorola Moto Z Force, Motorola Moto Z Play, LeEco Le 2, LeEco Le 2s, LeEco Le Max, LeEco Le S3, LeEco Le 3, LeEco Le Max 2, LeEco Le 2 , LeEco Le 3 Elite, Xiaomi 6 Nubio Z17.
Can not work with HTC series.
Specifications:
specification:
Product Name: Type-c 2-in-1 audio patch cord
Color: gold, rose gold, black, silver
Weight: about 8.5g
Function: Call Charging Listening to songs
Transfer is faster and more convenient. Fine workmanship, high quality wire, soft and durable
Connector A: 3.5mm audio female; USB Type-C female
Connector B: USB Type-C male
Material: aluminum alloy shell nylon braided wire
Process: New one-piece head High hardness High strength
Current: over 2A current, tinned copper core, charging, more stable transmission
Note: It is mainly suitable for type c mobile phones without 3.5MM headphone jack.
Package Included:
1 x 2In1 USB Type-C Adapter Cable

Description:
The Adapter cable can convert USB-C to the 3.5mm Audio, it is perfectly suitable for Type-C Phones, Tablets, PC (Except the HTC Bolt).
Charging and Music the Same Time:2 in 1 cable supports simultaneous charging and audio output, so you can enjoy the music while charging. Note: No Music Control.
More compatibility: Motorola Moto Z, Motorola Moto Z Droid, Motorola Moto Z Force, Motorola Moto Z Play, LeEco Le 2, LeEco Le 2s, LeEco Le Max, LeEco Le S3, LeEco Le 3, LeEco Le Max 2, LeEco Le 2 , LeEco Le 3 Elite, Xiaomi 6 Nubio Z17.
Can not work with HTC series.
Specifications:
specification:
Product Name: Type-c 2-in-1 audio patch cord
Color: gold, rose gold, black, silver
Weight: about 8.5g
Function: Call Charging Listening to songs
Transfer is faster and more convenient. Fine workmanship, high quality wire, soft and durable
Connector A: 3.5mm audio female; USB Type-C female
Connector B: USB Type-C male
Material: aluminum alloy shell nylon braided wire
Process: New one-piece head High hardness High strength
Current: over 2A current, tinned copper core, charging, more stable transmission
Note: It is mainly suitable for type c mobile phones without 3.5MM headphone jack.
Package Included:
1 x 2In1 USB Type-C Adapter Cable

Description:
The Adapter cable can convert USB-C to the 3.5mm Audio, it is perfectly suitable for Type-C Phones, Tablets, PC (Except the HTC Bolt).
Charging and Music the Same Time:2 in 1 cable supports simultaneous charging and audio output, so you can enjoy the music while charging. Note: No Music Control.
More compatibility: Motorola Moto Z, Motorola Moto Z Droid, Motorola Moto Z Force, Motorola Moto Z Play, LeEco Le 2, LeEco Le 2s, LeEco Le Max, LeEco Le S3, LeEco Le 3, LeEco Le Max 2, LeEco Le 2 , LeEco Le 3 Elite, Xiaomi 6 Nubio Z17.
Can not work with HTC series.
Specifications:
specification:
Product Name: Type-c 2-in-1 audio patch cord
Color: gold, rose gold, black, silver
Weight: about 8.5g
Function: Call Charging Listening to songs
Transfer is faster and more convenient. Fine workmanship, high quality wire, soft and durable
Connector A: 3.5mm audio female; USB Type-C female
Connector B: USB Type-C male
Material: aluminum alloy shell nylon braided wire
Process: New one-piece head High hardness High strength
Current: over 2A current, tinned copper core, charging, more stable transmission
Note: It is mainly suitable for type c mobile phones without 3.5MM headphone jack.
Package Included:
1 x 2In1 USB Type-C Adapter Cable

Description:
This anti-lost device is a product based on the latest Bluetooth 4.0 low-power technology.
By using APP software and Bluetooth connection with mobile devices such as mobile phones, it is easy to lose items and valuables (such as keys, handbags, etc) Bundled together, to achieve the anti-lost reminder of the item, to find the function of the mobile phone, and also to remotely control the camera, recording and other functions (such as: party photo, self-timer, etc).
The anti-lost device can effectively use the distance, up to 30 meters in the open range, even you can use it on your baby or pet, you no longer have to worry about losing them.
Two-way alarm - When your mobile phone is connected to the anti-lost device, if you only bring your mobile phone when you go out, and leave the anti-lost device about 30 meters away, the mobile phone and keychain will alert you.
Two-way search - When you leave your mobile phone or anti-lost device (with the easy-to-drop object) at home, you can find the phone through the anti-lost device, or you can find the anti-lost device on your mobile phone.
Positioning search - If you don't pay attention to the lost item after the reminder, you can check the lost position through the positioning function in the APP, that is, the position disconnected from the phone.
Self-timer function - Switch to the camera interface in the APP and click the anti-lost button to remotely take a selfie.
Specifications:
Scheme: Broadcom
Bluetooth: 4.0
APP: iFindU
Net weight: 8 g
Gross weight: 20 g
Material: ABS acrylic
Product dimensions: 40*7mm
Gift box size: 103*70*15mm
Battery: button cell CR2032
Battery capacity: 200mah
Operating voltage: 3V
Buzzer: 90 DB≤
Working distance: 0-30m
Standby time: more than 6 months
Color: black, white, pink and blue
Applicable systems: IOS 9.0 and above, android 9.0 and above
Package Included:
1* anti-lost device 1* instruction 1* prying piece

Description:
This anti-lost device is a product based on the latest Bluetooth 4.0 low-power technology.
By using APP software and Bluetooth connection with mobile devices such as mobile phones, it is easy to lose items and valuables (such as keys, handbags, etc) Bundled together, to achieve the anti-lost reminder of the item, to find the function of the mobile phone, and also to remotely control the camera, recording and other functions (such as: party photo, self-timer, etc).
The anti-lost device can effectively use the distance, up to 30 meters in the open range, even you can use it on your baby or pet, you no longer have to worry about losing them.
Two-way alarm - When your mobile phone is connected to the anti-lost device, if you only bring your mobile phone when you go out, and leave the anti-lost device about 30 meters away, the mobile phone and keychain will alert you.
Two-way search - When you leave your mobile phone or anti-lost device (with the easy-to-drop object) at home, you can find the phone through the anti-lost device, or you can find the anti-lost device on your mobile phone.
Positioning search - If you don't pay attention to the lost item after the reminder, you can check the lost position through the positioning function in the APP, that is, the position disconnected from the phone.
Self-timer function - Switch to the camera interface in the APP and click the anti-lost button to remotely take a selfie.
Specifications:
Scheme: Broadcom
Bluetooth: 4.0
APP: iFindU
Net weight: 8 g
Gross weight: 20 g
Material: ABS acrylic
Product dimensions: 40*7mm
Gift box size: 103*70*15mm
Battery: button cell CR2032
Battery capacity: 200mah
Operating voltage: 3V
Buzzer: 90 DB≤
Working distance: 0-30m
Standby time: more than 6 months
Color: black, white, pink and blue
Applicable systems: IOS 9.0 and above, android 9.0 and above
Package Included:
1* anti-lost device 1* instruction 1* prying piece

Description:
This anti-lost device is a product based on the latest Bluetooth 4.0 low-power technology.
By using APP software and Bluetooth connection with mobile devices such as mobile phones, it is easy to lose items and valuables (such as keys, handbags, etc) Bundled together, to achieve the anti-lost reminder of the item, to find the function of the mobile phone, and also to remotely control the camera, recording and other functions (such as: party photo, self-timer, etc).
The anti-lost device can effectively use the distance, up to 30 meters in the open range, even you can use it on your baby or pet, you no longer have to worry about losing them.
Two-way alarm - When your mobile phone is connected to the anti-lost device, if you only bring your mobile phone when you go out, and leave the anti-lost device about 30 meters away, the mobile phone and keychain will alert you.
Two-way search - When you leave your mobile phone or anti-lost device (with the easy-to-drop object) at home, you can find the phone through the anti-lost device, or you can find the anti-lost device on your mobile phone.
Positioning search - If you don't pay attention to the lost item after the reminder, you can check the lost position through the positioning function in the APP, that is, the position disconnected from the phone.
Self-timer function - Switch to the camera interface in the APP and click the anti-lost button to remotely take a selfie.
Specifications:
Scheme: Broadcom
Bluetooth: 4.0
APP: iFindU
Net weight: 8 g
Gross weight: 20 g
Material: ABS acrylic
Product dimensions: 40*7mm
Gift box size: 103*70*15mm
Battery: button cell CR2032
Battery capacity: 200mah
Operating voltage: 3V
Buzzer: 90 DB≤
Working distance: 0-30m
Standby time: more than 6 months
Color: black, white, pink and blue
Applicable systems: IOS 9.0 and above, android 9.0 and above
Package Included:
1* anti-lost device 1* instruction 1* prying piece

Description:
This anti-lost device is a product based on the latest Bluetooth 4.0 low-power technology.
By using APP software and Bluetooth connection with mobile devices such as mobile phones, it is easy to lose items and valuables (such as keys, handbags, etc) Bundled together, to achieve the anti-lost reminder of the item, to find the function of the mobile phone, and also to remotely control the camera, recording and other functions (such as: party photo, self-timer, etc).
The anti-lost device can effectively use the distance, up to 30 meters in the open range, even you can use it on your baby or pet, you no longer have to worry about losing them.
Two-way alarm - When your mobile phone is connected to the anti-lost device, if you only bring your mobile phone when you go out, and leave the anti-lost device about 30 meters away, the mobile phone and keychain will alert you.
Two-way search - When you leave your mobile phone or anti-lost device (with the easy-to-drop object) at home, you can find the phone through the anti-lost device, or you can find the anti-lost device on your mobile phone.
Positioning search - If you don't pay attention to the lost item after the reminder, you can check the lost position through the positioning function in the APP, that is, the position disconnected from the phone.
Self-timer function - Switch to the camera interface in the APP and click the anti-lost button to remotely take a selfie.
Specifications:
Scheme: Broadcom
Bluetooth: 4.0
APP: iFindU
Net weight: 8 g
Gross weight: 20 g
Material: ABS acrylic
Product dimensions: 40*7mm
Gift box size: 103*70*15mm
Battery: button cell CR2032
Battery capacity: 200mah
Operating voltage: 3V
Buzzer: 90 DB≤
Working distance: 0-30m
Standby time: more than 6 months
Color: black, white, pink and blue
Applicable systems: IOS 9.0 and above, android 9.0 and above
Package Included:
1* anti-lost device 1* instruction 1* prying piece

Description:
1. How to select power supply?
The power supply of the board matching is very important. The ripple of the selected power supply must be small. The power supply with large ripple will cause the noise at the bottom of the power amplifier board to increase and there will be current sound. The higher the voltage, the higher the current, and the more sufficient the output power. If you only have 12V 1a, you can bring a 3-4 inch speaker. If you are above 19v 5a, with 8-10 inch no problem, power must be attached great importance. If the voltage is too low, the sound amplification is easy to cause sound distortion. If the current is too small to bring up, the horn will pull down the voltage, work abnormally or the sound quality becomes poor.
It is recommended to use 18v19v2v power supply with current above 5A. If you only have 9v12v or 1A 2A power supply, you can also use it, but the power is small. If the volume is close to the maximum, it may cause distortion and affect the sound quality.
2. How to choose the horn?
On the type of horn: commonly used horn is generally 4-8 ohm, can be used. The left and right channel speakers need to be connected with full frequency speakers or medium and high frequency speakers, and the power is between 20W and 100W. Subwoofer speakers can not be connected to ordinary speakers, need to be connected with subwoofer speakers, power between 20-100. The subwoofer horn should dive at least 50 Hz.
If your speaker power is small, such as between 20w-50w, it can also be used. The power supply voltage needs to be smaller to prevent burning the speaker after loud. For example, choose a power supply below 15V. If you are a 50W - 100W speaker, you don't have to worry about the burning problem of the speaker. You can choose a 12 - 24 V power supply. The higher the voltage you choose, the more sound or power you can output. The power of the loudspeaker is not easy to exceed 100W, otherwise the sound quality will be affected.
3. Introduction of audio input mode
This audio amplifier module has two audio input modes: one is Bluetooth input, the other is aux input, and Bluetooth mode has priority. Bluetooth can be connected in either mode. As long as the Bluetooth connection is successful, it is Bluetooth mode, and the Bluetooth mode supports automatic connection back. When Bluetooth is not connected, aux is inserted in aux mode. It should be noted that when using aux mode, it is necessary to confirm that the Bluetooth connection of this module has been disconnected.
4. How to adjust the main volume?
The main volume knob is used to adjust the main volume. The right main volume increases and the left main volume decreases. The main volume affects both the left and right channels and the volume of the subwoofer.
Specifications:
Product model: zk-tb21
Bluetooth version: 5.0 (no occlusion, 10m)
Input sensitivity: 500mv
Input mode: aux Bluetooth
Number of channels: 2.1
Power amplifier chip: tpa3116d2 (with am interference suppression function)
Adaptive power supply: DC12 ~ 24 V / 5 A or above (the higher the voltage, the greater the output power)
Adaptive horn: 20 ~ 100W, 4 ~ 8 Ω
Output power: maximum 50W for left and right channels
Subwoofer up to 100W
Protection mechanism: overvoltage, undervoltage, overheating, DC detection, short circuit protection
Product size: 120mm * 100mm * 20MM
Product weight: about 256g (including package)
Tip: when the audio input is enough and the power supply voltage / current is enough, there will be enough output power!!! The higher the power supply voltage is, the greater the output power is, the smaller the horn impedance is, and the greater the output power is! Please make sure that the power of the adaptive power supply is greater than the actual working power of the power amplifier!!!
Package Included:
1* power amplifier module