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Coulometer Lead-acid Battery Voltage Monitor, Battery Capacity Monitor, 30A Charge/Discharge Controller 6V-60V LCD Display Coulometer Lead-acid Battery Voltage Monitor, Battery Capacity Monitor, 30A Charge/Discharge Controller 6V-60V LCD Display 1.Description: ZK-J30 is a high-precision current acquisition type battery meter, also known as a coulomb meter with 30A relay switch control output. It can display the real-time capacity and charging/discharging time of the battery in... $10.71
$15.99
SKU: GY21224-1
$10.71
$15.99

33

32GB Memory Card 32GB Memory Card Tips: The actual usage capacity of the 32GB memory card is about 29.1GB, because the computer uses binary system and the manufacturer uses decimal system when producing it. The computer is 1MB=1024KB, the manufacturer is 1MB=... $3.86
$5.59
SKU: GY21220-1
$3.86
$5.59

31

WIFI High Temperature Controller APP Remote Control K-type Thermocouple -99~999C LCD Display 10A Relay Switch Controller WIFI High Temperature Controller APP Remote Control K-type Thermocouple -99~999C LCD Display 10A Relay Switch Controller 1.Description: XY-WT04-W is a wireless WIFI K-type digital high temperature controller module with APP Sinilink control. It can be widely used at smart home,Industrial control, Automatic irrigation, Indoor ventilation. Protection equip... $14.24
$18.99
SKU: GY21223-1
$14.24
$18.99

25

High Temperature Controller K-type Thermocouple -99~999C LCD Display 10A Relay Switch Controller High Temperature Controller K-type Thermocouple -99~999C LCD Display 10A Relay Switch Controller 1.Description: XY-WT04 is a K-type digital high temperature controller module. It can be widely used at smart home, Industrial control, Automatic irrigation, Indoor ventilation. XY-WT04 high temperature control module has high pre... $9.38
$12.50
SKU: GY21222-1
$9.38
$12.50

25

DC 12V 24V 30W TWS Bluetooth-compatiable Amplifier Audio Module Mono AUX/U-disk Music Player DC 12V 24V 30W TWS Bluetooth-compatiable Amplifier Audio Module Mono AUX/U-disk Music Player 1.Description: ZK-301B is a DC 12V 24V 30W TWS Bluetooth Amplifier Audio Module, perfect for DIY wireless Bluetooth speakers and transponders. It can receive Bluetooth music, as well as AUX/USB audio input. It also features a unique TW... $6.89
$9.99
SKU: GY21171-1
$6.89
$9.99

32

50W+50W+100W Subwoofer Bluetooth-Compatiable Amplifier Module 2.1Channel Treble Bass AUX/U-disk Audio APP Controller 50W+50W+100W Subwoofer Bluetooth-Compatiable Amplifier Module 2.1Channel Treble Bass AUX/U-disk Audio APP Controller 1.Description: XY-S100H is a DC 12V 24V 50W+50W+100W HIFI Bluetooth 2.1 Amplifier Audio Module with Stereo Treble Bass Subwoofer, perfect for DIY wireless Bluetooth speakers and transponders. This module can receive Bluetooth music, as... $23.45
$33.99
SKU: GY21211-1
$23.45
$33.99

32

3D Mini PCB Christmas Tree with Music DIY Kit, SMD Component Soldering Kit 3D Mini PCB Christmas Tree with Music DIY Kit, SMD Component Soldering Kit 1.Introduction: It is a mini Christmas tree DIY kit. Three different PCB are combined into a 3D stereo Christmas tree model.. It can be powered by a button battery and can be free from the power supply. Built-in 7 LED gradient modes an... $4.19
$6.99
SKU: GY21210-1
$4.19
$6.99

40

Voltage Buck Converter, DC-DC 1200W Step Down Power Supply Adapter, 6V-70V to 0-60V 0-20A CVCC Adjustable Voltage Converter LCD Display Fan Remote Control Voltage Buck Converter, DC-DC 1200W Step Down Power Supply Adapter, 6V-70V to 0-60V 0-20A CVCC Adjustable Voltage Converter LCD Display Fan Remote Control 1.Description: XY-6020 is a DC-DC 20A 1200W High Power CVCC Adjustable Automatic Buck Power Supply adapter with a 1.8inch LCD display screen and remote controller. It is a non-isolated converter which supports solar charging. It can co... $50.91
$75.99
SKU: GY21209-1
$50.91
$75.99

33

DC 12V 24V RES485 Modbus RTU Relay Controller,16CH-IN-NPN 16CH-OUT Programmable Switch Optocoupler Isolator for PLC DC 12V 24V RES485 Modbus RTU Relay Controller,16CH-IN-NPN 16CH-OUT Programmable Switch Optocoupler Isolator for PLC 1.Description:  The Optocoupler Isolator for PLC is an expansion board used to increase the number of control objects to meet the control requirements of the system. In MODBUS mode, a maximum of 64 devices can be connected in para... $16.49
$21.99
SKU: GY21188-1
$16.49
$21.99

25

DIY Kit FM Radio with Rechargeable 18650 Lithium Battery, 5W Adjustable 76-108MHz Wireless Receiver, FM Radio Kits for School Soldering Projects DIY Kit FM Radio with Rechargeable 18650 Lithium Battery, 5W Adjustable 76-108MHz Wireless Receiver, FM Radio Kits for School Soldering Projects 1.Introduction: It is an 76.0MHz-108.0MHz Wireless FM Radio Receiver DIY Kit with Rechargeable 18650 Lithium Battery. It has a built-in high-definition display LCD display screen which can clearly display the receiving frequency and it... $19.79
$32.99
SKU: GY21121-1
$19.79
$32.99

40

DC Buck Converter 1200W DC-DC Step Down Power Supply Module 6V-70V to 0-60V 0-20A CVCC Adjustable Voltage Transformer LCD Display Fan DC Buck Converter 1200W DC-DC Step Down Power Supply Module 6V-70V to 0-60V 0-20A CVCC Adjustable Voltage Transformer LCD Display Fan 1.Description:   XY-6020L is a DC-DC 20A 1200W High Power CVCC Adjustable Automatic Buck Power Supply Module with a new generation of larger LCD display screen. It is a non-isolated converter which supports solar charging. &n... $26.79
$39.99
SKU: GY21208-1
$26.79
$39.99

34

MB1040 645cm Range Finder Transceiver, Ultrasonic Ranging Sensor Module Distance Tester for Drones/Robots MB1040 645cm Range Finder Transceiver, Ultrasonic Ranging Sensor Module Distance Tester for Drones/Robots 1.Description:  The Ultrasonic Ranging Sensor Module is a product used to measure distance by sending and receiving ultrasonic waves, and then using the value of measured time and the velocity of sound works out the distance of th... $8.96
$12.99
SKU: GY21172-1
$8.96
$12.99

31

GPIO Shield for RPI 3B/3B+/4B/ZERO Terminal Interface Module GPIO Shield for RPI 3B/3B+/4B/ZERO Terminal Interface Module 1.Description:  This GPIO Terminal Interface Module extends the RPI's 40Pin. The right side of the module provides a showy silk screen hint, as well as LED indicators. On the left side of the module are four groups of wiring t... $30.99 SKU: GY21183-1
$30.99

UPS Voltage Converter 6V-36V 30A Dual DC Power Supply Switch Module UPS Voltage Converter 6V-36V 30A Dual DC Power Supply Switch Module 1.Description:  The Dual DC Power Supply Switch is a dual power intelligent switching module, which can realize the intelligent switching between the main power supply and the backup power supply. When the main power supply is pow... $25.45
$37.99
SKU: GY21182-1
$25.45
$37.99

34

Simulated TDS Sensor Water Conductivity Sensor Water Quality Tester for UNO/Mega2560 Simulated TDS Sensor Water Conductivity Sensor Water Quality Tester for UNO/Mega2560 1.Description:  The Water Conductivity Sensor can be used to measure water quality in daily life. In general, the TDS of running water is within 100, and the pure water is within 10. 2.Feature:  1>.It can realize th... $6.29
$8.99
SKU: GY21176-1
$6.29
$8.99

30

DC 12V 24V 36V Trigger Counter Module 5-Bit 0.56in Red Digital Tube Display DC 12V 24V 36V Trigger Counter Module 5-Bit 0.56in Red Digital Tube Display 1.Description:   QF-C05 is a trigger counter. Each time press "+1" button, the calculator adds one. And each time press "-1" button, the calculator subtracts one. Returns 0 when press and hold the "-1"... $7.35 SKU: GY21161-1
$7.35

DC3.7V-120V Lead-acid Battery Voltage Monitor, Lithium Battery Charge Discharge Controller Protection Board DC3.7V-120V Lead-acid Battery Voltage Monitor, Lithium Battery Charge Discharge Controller Protection Board 1.Description:  The battery control charging module is a module that controls the power supply of the charger. It can realize automatic power off after the battery voltage exceeds the preset value. 2.Feature:  1>.Su... $5.03
$7.50
SKU: GY21163-1
$5.03
$7.50

33

DC6V-120V 30A Lead-acid Battery Voltage Monitor, Lithium Battery Charge Discharge Controller Protection Board DC6V-120V 30A Lead-acid Battery Voltage Monitor, Lithium Battery Charge Discharge Controller Protection Board 1.Description:  The battery charging control module is a module that controls the power supply of the charger. It can realize automatic power off after the battery voltage exceeds the preset value. 2.Feature:  1>.Su... $6.37
$9.50
SKU: GY21162-1
$6.37
$9.50

33

DIY Adjustable PWM Signal Generator, Voltage Current Temperature Tester Electronics Kit, Multifunctional LED Meter Soldering Kits for School Learning DIY Adjustable PWM Signal Generator, Voltage Current Temperature Tester Electronics Kit, Multifunctional LED Meter Soldering Kits for School Learning Introduction: 【 All in one Experiment DIY Kit 】The multifunctional soldering kit can measure voltage and current, temperature, logic level, circuit on-off, signal frequency and duty cycle, etc. It can also act as a PWM adjustable signa... $9.59
$15.99
SKU: GY21145-1
$9.59
$15.99

40

DC9-24V 60W Mono Voice Playback Module, 9-Channel Music Power Digital Amplifier, 32G TF Card Socket MP3 WAV UART Controller for Arduino DC9-24V 60W Mono Voice Playback Module, 9-Channel Music Power Digital Amplifier, 32G TF Card Socket MP3 WAV UART Controller for Arduino 1.Description:   DY-HL50T is a DC 12V 24V 60W Mono Voice Playback Module which can be trigger play by 9 input signal. It is a one-on-one segmented trigger control player that supports MP3 and WAV decoding formats; 9 input signal c... $7.79
$12.99
SKU: GY21191-1
$7.79
$12.99

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