PURPOSE: To realize a disaster preventing monitor system where fire can be reported for every house without causing cost rising checking is executed by an extremely easy operation and a fire reporting function is not lost even at the time of power interruption.

CONSTITUTION: Since speakers SP2, SP3 incorporated in a house information board 2 and an outdoor display equipment 5 which are arranged in every house are used as the ones for fire reporting, an exclusive fire reporting bell is not required to be layed in every house so that cost rising is not caused and fire reporting is possible at every house. When the house information board 2 doses not function owing to power interruption, etc., the output of a voice circuit 12 is supplied to the speakers SP2 and SP3 incorporated in the house information board 2 and the outdoor display equipment 5 and fire is reported from the speakers SP2 and SP3 so that the fire reporting function is not lost even at the time of power interruption. Beside, the normality/abnormality of a fire sensor 1 is reported by voice only with the operation of a check switch SW1 so that extremely easy check operation is realized.