5V/12V/24V Shield with Optocoupler Support High and Low Level Trigger for Arduino 1 2 4 6 8 Channel 5V Relay Power Supply Module Product Description: ...
5V One 1 Channel Relay Module Board Shield For PIC AVR DSP ARM for arduino Relay power supply module Product Description: The relay coil drive voltage ...
12V 1 Way Relay Red PCB Board High and Low level Trigger With Optocoupler Isolation 1 Channel Relay Module power supply module Product Description: .....