The Fire-Lite MS-5UD-3 is a five zone fire alarm control panel with a fully programmable, backlit keypad and LCD display. The panel operates at 120VAC.A built-in two-line Digital Alarm Communicator Transmitter allows for remote monitoring and creates another reliable line of communication with central station. The panel is compatible with System Sensor i3 Series detectors, as well as a slew of input devices, like two and four-wire detectors, tamper switches, pull stations, and waterflow devices.This fire alarm control panel is perfect for protecting small to medium-sized commercial, institutional, and industrial buildings. Also known as -Fire-Lite Alarms-Honeywell-Us 5 ZONE FIRE CNTRL/ COMM 24V - FL-MS5UD3