the temperature (heat) detecting alarm system, a heat sensor will be responsible to detect the temperature (heat), thus assuming there is a fire nearby happening. This will then trigger the buzzer and the LED light.

Any circuit or webpage about this? Please help. Thanks

 

It's the darndest thing, Google has heard of these things - http://www.google.com/search?q=temp...s=org.mozilla:en-US:official&client=firefox-a