Turning on an mPort output applies 12V DC to the relay, closing the connection between the 2 pins of corresponding output (K1, K2, K3 or K4).
Just select “Output 12V” (per port)
Due to unforeseen weather conditions we are experiencing higher chat wait times. Remember you can also submit a ticket and one of our support representatives will get back to you as soon as possible. We apologize for the inconvenience.