Description 12V relay, 30A high current control. 5-12V signal logic TTL control, at least 5mA. 220V AC control On board LED, led ON when close status, and vice verse. control pins has pull down circuit, can prevent wrong operation when on the float status. Well board design to prevent short circuit, and large trace for current. Note: Although we have revised this PCB to provide better isolation for the high voltage traces, this board is really meant for someone with some experience. Schematic can see on this page.
