High Low Level Trigger 5V/9V/12V/24V 1/2/4/8 Channel Relay Module w/Optocoupler

DC5V 9V 12V 24V 1/2/4/8 Channel Relay Module High Low Level with Optokoppler

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

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

4Pcs DC 24V Relay Module 1 Channel Relay Board with Optocoupler Isolation Suppor

2-Channel 12V Relay Module Optocoupler High and Low Level Trigger

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

DC 5V 1 channel Optocoupler Relay Module Support high and low trigger