The MS-5UD-3 is a five zone FACP (Fire Alarm Control Panel) that provides reliable fire signaling protection for small to medium-sized commercial, industrial, and instituational buildings. The MS-5UD-3 is fully programmable via built-in keypad and 80 character LCD display, so you do not need an external programmer. The five zones panel has a built-in Digital Alarm Communicator Transmitter (DACT) and availability to add optional equipment: Remote annunciator, Relay module, LED Driver module, Transmitter module and Printer interface module. The MS-5UD-3 s compatible with System Sensor’s microprocessor-based i3 series detectors. Additionally, the MS-5UD-3 is compatible with conventional input devices such as two- and four-wire smoke detectors, pull stations, waterflow devices, tamper switches, and other normally-open contact devices.