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

5V/9V/12V/24V 1/2/4 Channel Relay +Optocoupler Support High Low Level Trigger

1 Channel 12V Relay Module With Optocoupler Isolation High and Low Level Trigger

12V 1 Channel 1CH Relay Module H/L Level Trigger With SMD Optocoupler Isolation

12V 2 Channel Relay With Optocoupler Support High Low Level Trigger Module

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

DC5V/9V/12V/24V 1 Channel Optocoupler Relay Module Support High Low Trigger

DC 5/12/24V 8 Channel Relay Module with Optocoupler Isolation High/Low Trigger