The ZNSC2 series is the latest generation of zone sensing control units. It’s designed to monitor electrical circuits at various voltages (120 VAC, 277 VAC, and 347 VAC). The ZNSC2 will automatically trigger emergency lighting operation using either AC or DC current. In a traditional setup, emergency lighting would only come on if there’s a generalized power failure (triggering emergency lighting everywhere). With zone sensing, emergency lighting will come on if a zone monitored loses power (triggering emergency lighting specific to that zone). The ZNSC2 comes standard with zone test switch and zone pilot lights, for easy monitoring and testing.