| 摘要 |
PROBLEM TO BE SOLVED: To report to an installer or outside visually by adopting an electronic circuit incorporating an IC element and detecting a temperature increase in an arbitrary time for normal temperatures. SOLUTION: With a potential due to the temperature change of a temperature sensor 1, a switch mechanism 17 is turned on or off by a potential from a control mechanism 16, a potential that is accumulated in a hold element 18 is compared with a temperature increase potential by a comparison mechanism 19, and the result is turned on and an alarm mechanism 20 is operated. |
