Every termination board is equipped with redundant fused power supply terminals, a fault monitoring bus connection and most are HART ready with a separate dedicated connector.
Switch isolators supply power to the proximity sensor in a hazardous area, receive a proportional current, convert input signals to digital output signals
A relay module switches circuits inside the hazardous area. It can be used to sense external on/ off conditions and to control a variety of external devices. Typical circuits include: