| 摘要 |
<P>PROBLEM TO BE SOLVED: To prioritize maintenance of alarm output function of an alarm unit itself and suppress battery consumption relating to the other functions as much as possible, in a decline state of a battery voltage. <P>SOLUTION: An alarm unit 10-1 operates with a battery power supply 40, and when an alarm processing part 60 detects a fire, the alarm unit 10-1 outputs an alarm indicating a linking source from a notification part 36 and a transmission control part 62 transmits a fire linkage signal to the other alarm unit to make this alarm unit output an alarm indicating a linking destination. When the alarm processing part 60 detects a fire in a state that low battery fault due to the drop of a power supply voltage, the transmission control part 62 sets a second transmission mode (power saving transmission mode) which is lower in power consumption than a first transmission mode in which linkage signals of events other than the fire are transmitted, transmits the fire linkage signal to the other alarm unit to suppress battery consumption. <P>COPYRIGHT: (C)2012,JPO&INPIT |
