The Napco FWC-FSLC-EZM1 Fast Response Contact Module and FWC-FSLC-EZM2 Dual Input Monitor Module are designed to be used with pull stations, water flow switches, and other applications requiring the monitoring of dry contact devices. The interrupt driven communications protocol combines maximum communication reliability and fast response to emergency conditions. The FWC-FSLC-EZM2 addressable SLC two zone conventional input module provides two independent contact monitoring circuits while only utilizing one address on the SLC loop. Designed to be used with pull stations, water flow switches, and other applications requiring the monitoring of dry contact alarm initiating devices. The FWC-FSLC-EZM2 shall fit inside a single-gang electrical back box.