How does a fire alarm work

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How does a fire alarm work

2 Answers

0739393XXX · Answer 1 · 2022-09-20T10:10:54+0000

when the fire breaks the surrounding suddenly it increases the exantion of mercury due toheating complitely the circuit.As it is a good conducter the bell rings.

0784693XXX · Answer 2 · 2023-11-22T08:57:26+0000

High temperature causes the mercury to expand,connecting the contacts,allowing the flow of current and the bell rings

How does a fire alarm work

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