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3S 100A 18650 Li-ion Battery Protection Circuit Board 

 550.00
1.This protection board is 3s in common use lithium battery protection board (you can adjust for how many strings to

3V CR2032 Lithium Button Cell Battery

 25.00
Battery: CR2032 CR2032 Battery Voltage: 3V CR2032 Battery Chemistry: Lithium CR2032 Battery Capacity: 260 mAh CR2032 Battery Diameter: 20.0 mm (.78″)

4 CHANNEL 12V RELAY BOARD

 650.00
This 4 channel 12 V relay module is a low pull, high release relay module and features energization status indicator

4 channel 5v relay shield module, Four channel relay control board relay expansion board for UNO R3 mega 2560

 600.00
Description:This 5V 4 Relay Shield Module is a small current signal control power equipment commonly used electronic module, enabling high-power