smoke detector how it works

The smoke is rising and reaching the bottom of the ceiling. The smoke alarm found a fire through the smoke. When you dont see the flame or smell the smoke, the smoke detector already knows.

smoke detector

Smoke is actually another name for smoke detectors or smoke alarms. The smoke detector realizes fire prevention by monitoring the concentration of smoke. The smoke detector is equipped with

PGST invitation for the "HK TDC HongKong Electronics Fair"

To all esteemed customers and friends: One of the biggest electronics sourcing fair in the world---HKTDC HongKong Electronics Fair [Autumn Edition] is set to be held on October 13,2018 at Ho