24V 8 Channel Relay Module with OPTO-Isolated High and Low Level Trigger

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

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

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

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

2x DC 5V Relay Module 2-Channel Relay Switch Optocoupler Isolation High/Low

4 Pack 2-Channel DC 5V Relay Module Switch Optocoupler Isolation High/Low Level

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