Relay output interfaces NC, COM and NO correspond to normally closed, common interface and normally open relay respectively. The relay on board CM4 Industrial is a double-pole, double-throw relay. When the control relay is closed, NO1 and NO2 are closed relative to COM1 and COM2, and when the control relay is bounced off, NO1 and NO2 are open relative to COM1 and COM2.
Max Relay AC load 125V 0.5A
Max Relay DC load 30V 3A
