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Lithium Battery Charging Board 3.7V to 5V 2A Type-C USB Charger Discharger Module Parameter: 1>.Input charging voltage: DC 5V 2A 2>.Input battery voltage:DC 3.7V-4.2V Polymer Rechargeable Lithium Battery 3>.Output channel:1CH 4>.Output voltage:5V2A 5&g... $4.47
~~$6.39~~ SKU: 14034
$4.47
~~$6.39~~
30

DC 3.7V to 5V 2A Lithium Battery Charging Board Intelligent Control Charger Module DIY Charger Parameter: 1>.Input charging voltage: DC 5V 1A 2>.Input battery voltage:DC 3.7V-4.2V Polymer Rechargeable Lithium Battery 3>.Output channel:2CH 4>.Output voltage:5V2A/5V2A ... $3.70
~~$5.29~~ SKU: 14032
$3.70
~~$5.29~~
31

Lithium Battery Charging Board DC 3.7V to 5V 2.1A Mobile Power Charger Discharger Module Parameter: 1>.Input charging voltage: DC 5V 2.1A 2>.Input battery voltage:DC 3.7V-4.2V Polymer Rechargeable Lithium Battery 3>.Output channel:2CH 4>.Output voltage:5V2.1A/5V1A &... $3.70
~~$5.29~~ SKU: 14031
$3.70
~~$5.29~~
31

Wireless Bluetooth RF Transceiver Module BLE2.0 UART 4dBm 2.4GHz w/ Control Board Common Pin: 1>.Pin-1:UART_TXD.UART data output 2>.Pin-2:UART_RXD.UART data input 3>.Pin-11:RESETB.Reset/Restart button 4>.Pin-12:3.3V input 5>.Pin-13:GND 6&... $3.91
~~$5.59~~ SKU: 13919
$3.91
~~$5.59~~
30

GFSK Wireless Bluetooth RF Transceiver Module CC2541 BLE4.0 UART DC 3.3V 2.4GHz ISM Low Power Consumption Common Pin: 1>.UART_TX:UART data output 2>.UART_RX:UART data input 3>.VCC:Input power supply 4>.GND:Input power supply 5>.P1_3:Disconnect pin (200ms ground pulse disco... $3.91
~~$5.59~~ SKU: 13914
$3.91
~~$5.59~~
30

GFSK Wireless Bluetooth RF Transceiver Module nRF52832 BLE5.0 UART DC 3.3V 2.4GHz ISM Low Power Consumption Module Common Pin: 1>.UART_TX:UART data output 2>.UART_RX:UART data input 3>.VCC:Input power supply 4>.GND:Input power supply 5>.RESETB:low level reset, at least 5ms &nbs... $4.61
~~$6.59~~ SKU: 13910
$4.61
~~$6.59~~
30

DX-BT20 Wireless Bluetooth RF Transceiver Module CC2640 BLE5.0 UART DC 3.3V 2.4GHz ISM Low Power Consumption Common Pin: 1>.UART_TX:UART data output 2>.UART_RX:UART data input 3>.VCC:Input power supply 4>.GND:Input power supply 5>.DIO_4:Enabled/Disabled 6>.DIO_5... $4.40
~~$6.29~~ SKU: 13908
$4.40
~~$6.29~~
31

DC 5V Voice Audio Amplifier Module XH-A157 AUX PAM8403 Stereo 3W+3W Dual-channel Digital Power Amplifier Board Description: XH-A157 is a dual-channel digital power amplifier board with input voltage of DC5V and 3.5mm AUX audio input socket.On-board 50K volume adjustment relay and can be used to open and close the amplifier and a... $2.66
~~$3.59~~ SKU: 13906
$2.66
~~$3.59~~
26

XH-A234 Digital Power Amplifier Board 30W+30W DC12-24V Dual Channel Voice Audio Module 30W*2 Description: This digital power amplifier board has a moderate power resolution and it is used in 20W-30W speakers. It can be installed directly inside some small devices for easy installation and replacement. &... $2.95
~~$3.99~~ SKU: 13905
$2.95
~~$3.99~~
27

DC 12-30V XH-A902 Operational Pre-Amplifier Module NE5532 Amplifier Front Panel Digital Audio Module Description: The XH-A902 audio preamplifier board uses the original imported op amp chip, which is purer than other similar op amps.Smaller noise floor.It is suitable for a wide range of preamplifier amplification of all audio... $2.66
~~$3.59~~ SKU: 13904
$2.66
~~$3.59~~
26

DC12V XH-A351 Digital Bluetooth Power Amplifier Board Dual Channel 20W+20W HIFI Stereo Voice Audio Module Description: XH-A351 Bluetooth power amplifier board with high-fidelity stereo sound quality, Bluetooth 4.2 audio input, Support unobstructed onnected to 20 meters (depending on the Bluetooth configuration of the personal mobi... $5.47
~~$7.39~~ SKU: 13900
$5.47
~~$7.39~~
26

XH-A252 Digital Bluetooth 5.0 Receiver Module Wireless Power Amplifier Board Lossless Voice Audio Module Support APE/FLAC/MP3/WAV Description: XH-A252 Bluetooth audio receiver for connecting amplifiers.Support APE, FLAC, MP3, WAV, WMA and other music formats, the mainstream mainstream music format can be decoded.Support unobstructed onnected to 20 meters... $3.77
~~$5.39~~ SKU: 13899
$3.77
~~$5.39~~
30

XH-A233 DC 12V-24V Wireless Bluetooth Receiver Power Amplifier Board V4.2 Dual Channel Voice Audio Module 15W+15W Support TF Card Description: XH-A233 TF card/Bluetooth power amplifier board.Its input voltage is DC12~24V.Support TF card and Bluetooth audio input methods.The default is TF card input if connect TF card and bluetooth at the same time. The b... $3.99
~~$5.39~~ SKU: 13898
$3.99
~~$5.39~~
26

XH-A251 Digital Power Amplifier Wireless Bluetooth Module V4.2 Lossless Audio Receiver Micro USB Decoder Board 5W+5W Description: XH-251 Bluetooth power amplifier.Powered by Micro USB.It supports 4.1 Bluetooth.The effective distance of Bluetooth is 15-20meter.There are two buttons can adjust volume and select prev/next music. ... $3.77
~~$5.39~~ SKU: 13896
$3.77
~~$5.39~~
30

XH-M246 Automatic Buck-Boost Module Non-isolated CCCV Power Supply Converter Step Down Step UP Module Battery Charging Module Description: XH-M246 is a Automatic Buck-Boost constant voltage constant current power supply module.It can adjust output voltage to meet different require and output a stable voltage. Parameter: 1>... $3.91
~~$5.59~~ SKU: 13894
$3.91
~~$5.59~~
30

XY-P40W Stereo Bluetooth Power Amplifier Board 20W 30W 40W 5V 12V 24V Dual Channel Audio Module Bluetooth Receiver Module 1.Description: XY-P40W is a high-power stereo Bluetooth audio module.Dual channels audio signal output.Built-in amplifier module therefore it can connect to loudspeaker directly.It is ideal for DIY wireless Bluetooth sp... $3.69
~~$4.99~~ SKU: 13865
$3.69
~~$4.99~~
26

XY-P40W Dual Channel Stereo Bluetooth Power Amplifier Board 5V 12V 24V 20W 30W 40W Infrared Remote Control Receiver Module Audio module with Case 1.Description: XY-P40W is a high-power stereo Bluetooth audio module.Dual channels audio signal output.Built-in amplifier module therefore it can connect to loudspeaker directly.It is ideal for DIY wireless Bluetooth sp... $6.40
~~$8.65~~ SKU: 13862
$6.40
~~$8.65~~
27

5V 12V 24V 150W ZK-MG High-Power PWM DC Motor Speed Controller Signal Generator Driver Module Speed Regulator 1KHz-99KHz 1.Description: ZK-MG is a High-power PWM DC motor governor.It can adjusts the motor speed by adjusting the duty cycle of the output signal.It can also adjust the output frequency to match the frequency of the output signal to the motor... $4.14
~~$5.59~~ SKU: 13861
$4.14
~~$5.59~~
27

ZK-CAR Intelligent Tracking Smart Car Suite DIY Kits TT Motor Infrared Tracking Obstacle Avoidance Following Smart Car Electronic Components 1.Description: ZK-CAR is an intelligent control car that measures distance by infrared sensor to achieve obstacle avoidance, tracking and following functions.It is suitable for experimental teaching; scientific ex... $13.34
~~$17.79~~ SKU: 13860
$13.34
~~$17.79~~
25

DC 12V 24V Self-locking Inching Mode WIFI Relay Switch Module IoT Wireless Intelligent Control Device with APP Button Control for Smart Home Compatible with iOS Andriod 1.Description: Home automation is "The Internet of Things". It simply means the way all devices or appliances are networked together to provide customers with a seamless control over their home equipment. ... $4.12
~~$5.89~~ SKU: 13859
$4.12
~~$5.89~~
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