| 摘要 |
PROBLEM TO BE SOLVED: To make possible simply and easily check an alarm after setting without using special instruments. SOLUTION: Dedicated instruments are not needed and the troubles for checking alarms are omitted. This alarm has a gas leakage sensor 11, an incomplete combustion sensor 12, fire sensor 13, and alarm part 14, and a operation- checking part 17 is provided on the multiple type alarm which can alert and display the gas leakage, the incomplete combustion, and the fire individually or with them combined. This operation-checking part 17 is operated from outside and the dedicated instruments for inspection are needed, by conducting the prescribed alarm, display operation switching from inside to outside.
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