Altronix's FireSwitch® NAC POWER EXTENDER can be connected to any 12 VDC or 24 VDC Fire Alarm Control Panel (FACP). Its two-wire horn/strobe Sync mode allows audible notification appliances (horns) to be silenced while visual notification appliances (strobes) continue to operate. Other features include Temporal Code 3, Steady Mode, and Input to Output Follower Mode (maintains synchronization of notification appliances circuit). Sync protocols include Potter, Gentex, System Sensor, and CooperWheelock. UL listed and FM approved. NFPA 72 and NFPA 720 compliant. California State Fire Marshal (CSFM) approved.