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

12V 1 Channel Relay Module with Optocoupler Isolation High and Low Trigger UK

1-Channel DC 3V 5V 12V 24V Optocoupler Isolated Driver Relay Module High Level

MTDELE 6Pcs DC 3.3V Relay Module 1 Channel Optocoupler 3V/3.3V Relay...

1/2/4/8 Arduino Pi Channel Relay Board Module Selectable High Low 5V 12V 24V

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

1Channel High Level Driver Relay Module Optocoupler Isolated Drive Control Board

1-Channel DC 3V 5V 12V 24V Optocoupler Isolated Driver Relay Module High Level