5 Essential Elements For wireless fire alarm systems
smoke, set off a fire sprinkler. Most fire sprinkler heads arrive equipped which has a glycerin-crammed glass bulb. Since the glycerin heats up as a result of heat from a fire underneath, it expands, shatters the glass bulb, and triggers the sprinkler head. The fire sprinkler swap senses this flow of h2o and transmits a sign to the fire alarm contr