fire alarm systems Things To Know Before You Buy
smoke, cause a fire sprinkler. Most fire sprinkler heads arrive Outfitted that has a glycerin-stuffed glass bulb. Given that the glycerin heats up as a result of warmth from the fire below, it expands, shatters the glass bulb, and triggers the sprinkler head. The fire sprinkler switch senses this flow of water and transmits a sign to the fire alarm