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4 Channel Relay Module DriveFree PC Intelligent Switch Controller PCB Board SET

12V 8 Channel Relay Module with OPTO-Isolated High and Low Level Trigger 8 Ways

NEW 1 Channel Infrared Switch Relay Driving Module Board 12V Remote Controller

LCUS-4 4 Channel USB Relay Module 4 Way USB Relay Module USB 5V E8I16859

DC5V USB Smart WIFI On/Off Switch Single Relay Wireless Remote Control Switch