The AFC-50 ADDRESSABLE FIRE ALARM CONTROL PANEL has a capacity of 50 addresses and utilizes a 5 amp power supply with two Notification Appliance Circuits (NACs) and two input/output circuits. Each output is regulated, power limited, and programmable. The circuits can be configured for steady signal, strobe synchronization, constant power, door-holder power, or releasing. Strobe synchronization includes Gentex, AMSECO, System Sensor and Cooper/Wheelock. UL listed. FM approved.