The NATIONAL TIME 900 Series Fire Alarm is a modular system which provides the building blocks to create any size system from a small conventional wired system to a large high rise system with intelligent loops and two way communication. The 900 Series Fire Alarm combines an easy to use panel with a highly reliable state-of-the-art addressable analog system. National Time's DigiComm™ digital communication loops overcome transmission frailties of conventional analog systems. The 900 Series provides a user friendly programming method utilizing a Windows based configuration program.