How does smoke detector work?

How does smoke detector work?
What are the 3 types of smoke detectors?
What triggers a smoke detector?
How do I test my smoke detector?
Which smoke detector is best?
Why is red light on smoke detector?
#smokedetector #detector #fire #safety #testing #training #school #nafseup

[@deepamworld4091]

Informative

[@ustripathi101]

Knowledgeable vedio
Thanks jitendra sir 👏👏

[@haravindrakumar2336]

👍👍👍👍

[@nikhilagnihotri7389]

👍👍