1 channel 12V Relay Module, Opto-coupler isolated, for Arduino and MCU projects.

1PCS DC 12V 4-Channel Relay Module Optocoupler For Arduino PIC ARM AVR DSP UK

1PCS 5V 1/2/4/8 Channel Relay Board Module Optocoupler LED for Arduino PiC ARM U

5V/12V/24V Relay Module with Optocoupler 1/2/4/6/8/16 Channel for Arduino Pi UK

12V Relay Modules 1-2-4-8 Channel Relay High Low Level Optocoupler Arduino -UK

1/2/4/6/8 Channel 5V Relay Board Module Optocoupler LED for Arduino PiC ARM AVR

5V 1/2/4/6/8 Channel Relay Board Module Optocoupler LED for Arduino PiC ARM AVR

12V 1/2/4/8 Channel Relay Board Module for Arduino Raspberry Pi ARM AVR DSP PIC