4-Channel Relay Module - EX4RM

The board offers the possibility of individual control of four electromagnetic relays, with load circuits of 10A at 250V. The control pins are isolated with optocouplers, ensuring high safety and guaranteeing that no spikes will appear in the control electronics. The board is powered by supplying 5V and GND to the respective pins. The control pin levels are 5V tolerant. The control pins are driven by active low voltage. The relay interfaces have normally open circuits. All three relay outputs – normally closed, common and normally open – are brought out to the output terminal and marked graphically.