DISASTER PREVENTION FACILITY

PROBLEM TO BE SOLVED: To provide a disaster prevention facility that prevents a situation where information within a caution zone is not transmitted since an electric wave cannot reach a radio relay device around a caution zone and that enables communication even with a radio device of a short range of the arrival of electric waves.SOLUTION: The disaster prevention facility includes a fire receiver 1 and a plurality of outdoor relays 3 installed outside the defined caution zone and is connected to a terminal device in each caution zone by wired communication or radio communication to store event information sent by the terminal devices. The plurality of outdoor relays 3 establish radio communication with one another, store the event information stored in the adjacent outdoor relays 3, relay the information, and transmit information for the entire facility by linking the relay. The fire receiver 1 receives information from the outdoor relays 3, and performs operation such as warning, displaying, ganged control.