| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve a problem that, as to a conventional fire sensor, it is not known whether a repaired fire sensor is normal unless a prescribed time elapses even when power is supplied to the fire sensor after repair thereof, in the case that an alarm of abnormality is not issued before the lapse of a prescribed time.SOLUTION: A fire sensor 30 includes: an abnormality detection part 35 for detecting an abnormal condition; an abnormality decision determination part 36 for determining abnormality decision when the abnormality detection part 35 detects an abnormal condition continuously for a prescribed time; an abnormality decision storage part 37 for recording abnormality decision information when the abnormality decision determination part 36 determines the abnormality decision; and an alarm part 38 in which the abnormality decision information is recorded at a power source supply starting time, which performs abnormality alarm when the detection part detects an abnormal condition, and performs abnormality alarm when an abnormality decision is determined at a normal time.</p> |
