The PFC-6800 is a single loop expandable to eight loop analog/addressable fire alarm control panel. The panel utilizes the Potter/Nohmi device protocol that has a complete line of initiating and control devices. The SLC is capable of 50 ohms of resistance and does not require the use of twisted or shielded wire. The on board Signaling Line Circuit (SLC) supports 127 of any combination of smoke sensors, heat detectors or modules. Up to six additional SLC cards may be added in the control panel.