Abstract: A fire protection system for determining the existence of hazardous conditions within a building. The system includes a central monitor node for monitoring and displaying system status information. At least one zone node is located remote from the monitor node, and defines a plurality of fire protection zones within the building. A plurality of detectors are arranged within each zone at respective predetermined address locations. Each of the detectors includes a microcontroller for detecting and storing information indicating an occurrence of a hazardous event. The detectors have a normal negative state wherein no occurrence of a hazardous event is detected, and a positive state wherein the occurrence of a hazardous event is detected.