30A Relay Module Optocoupler Isolation High And Low Level Trigger Single Power

Using the industry-quality ultra-small optocoupler, strong anti-interference ability. Type A 5V 30A Relay Module 1. Type B 12V 30A Relay Module 1. Type C 24V 30A Relay Module 1". NO: The relay is normally open interface, the relay is suspended before closing, and short-circuited with COM after closing.

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