Relay Module Interface Boards for Arduino Low Level Trigger 1/2/4/6/8 Channels

1-10Piece 4 Channel 3V 3.3V Relay Module For Arduino Raspberry PIC AVR DSP ARM

5V Relay Module 1/2/4/6/8 Channel Opto-Isolated for Arduino ESP32 Raspberry Pi

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

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

Two x Dual 5V Relay Modules with Optocoupler for Pi, Arduino, etc...

DC 3V 5V Low Control High Voltage 12V 24V 36V E-switch Mosfet Module For Arduino

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