| 摘要 |
PROBLEM TO BE SOLVED: To inform a user of an interruption cause of gas inexpensively without additionally providing parts. SOLUTION: There are provided a temperature sensor 6 and an alarming lamp 8. If measured temperature becomes higher than a threshold, gas is interrupted, and the alarming lamp 8 flashes in a different period from consumption alarming of a battery 20. As a result, a user can be informed of the cause of fire extinguishment.
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