This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
It is used in fire alarm

when something catches fire

the bimetallic strip bend by obsorbing heat and completes the circuit and rings the alarm
1 5 1