Hiletgo 12V 1 Channel Relay Module With Optocoupler Isolation Support High Or Low Level Trigger

Fainwan 12V 8 Channel Relay Module With OPTO-Isolated High And Low Level Trigger 8 Ways Relay Switch Module Compatible With Ar-Duino

Hiletgo 5V 8 Channel Relay Module With OPTO-Isolated Support High And Low Level Trigger

1Pc Green 1-Channel PC817 Optocoupler Isolation Module Optoelectronic Isolator Signal Isolation And Anti-Interference 3-5V 12V 24V Optocouplers

CTWHA 1 Channel 5V Relay Module With Optocoupler Isolated Load For PLC Automation Equipment Control Industrial Control High Low Level Trigger Internet

1 Channel Relay Module 30A With Optocoupler Isolation 5V Supports High Low Trigger