Adjustable 2-Channel Gpio Relay Module 5V-32V Optocoupler Pcb High Low Trigger 8021346572145

Adjustable 2-Channel Gpio Relay Module 5V-32V Optocoupler Pcb High Low Trigger 8021346572145

Adjustable GPIO Relay Module with Optocoupler 2 Channel PCB 5V to 32V High Low Level Trigger GPIO Relay Board Item Type: Relay Module Material: PCB...

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