The board has a high quality relay, which can handle a maximum of 10A @ 120V or 7A @ 240V AC, 7A24V DC. Each Relay has three connections - Common - C, Normally Open-NO, Normally Closed-NC brought out to 3 pin screw terminals which makes it easy to make and remove connections. The board has a power indication and a relay status LED to ease debugging. Power input and relay control signals are brought to header pins on the board.