Relay Module 2 Channel USB to CH340 Serial Control Relay Module Optocoupler9409

3X(Relay Module 3 Channel USB to CH340 Serial Control Relay Module8303

Relay Module USB to CH340 Serial Control Relay Module Optocoupler8055

16 Channel Relay Board USB Serial Port Control Switch SPDT Relay Module

2X(Relay Module 3 Channel USB to CH340 Serial Control Relay Module2218

3X(Relay Module 3 Channel USB to CH340 Serial Control Relay Module9466

Relay Module USB to CH340 Serial Control Relay Module Optocoupler9657

Relay Module 3 Channel USB to CH340 Serial Control Relay Module Optocoupler9975