THE GREATEST GUIDE TO FIRE ALARM SYSTEMS

smoke, set off a fire sprinkler. Most fire sprinkler heads appear equipped with a glycerin-stuffed glass bulb. As the glycerin heats up because of the warmth from a fire down below, it expands, shatters the glass bulb, and triggers the sprinkler head. The fire sprinkler change senses this stream of water and transmits a signal into the fire alarm c