The board has two digital inputs Rel1, Rel2 , which can be controlled by Digital output 3.3V or 5.0V. Every input can turn On/Off corresponding relay on the board. The especially of the board is, that when the relay is Turn ON, the corresponding connector output of the board gets 12V (the output is not normal closed contact!!!), so the board can directly control any 12V load.
The board has two 12V power supply connectors, which are connected in parallel, so a few boards can be connected cascade if is needed.
– Power supply: 12V
– Used relay: Omron G6D-1A-ASI-DC12
– Relay contact current: 5A