| 摘要 |
PROBLEM TO BE SOLVED: To easily extend a fire sensor while leaving an existing fire sensor. SOLUTION: A portable movable fire sensor 4 is used as a fire sensor for extension and installed in a room different from a room where a fixed fire sensor 2 is fixed on the ceiling or the like. The fixed fire sensor 2 has a radio communication function to perform radio communication with the movable fire sensor 4. When sensing a fire, the movable fire sensor 4 transmits a notification signal. When receiving the notification signal, the fixed fire sensor 2 informs of the fire by an LED and notifies an alarm 3 connected by a communication line 5 of the fire. The alarm 3 notifies the occurrence of the fire. COPYRIGHT: (C)2006,JPO&NCIPI
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