FIRE ALARM SYSTEMS NO FURTHER A MYSTERY

smoke, induce a fire sprinkler. Most fire sprinkler heads arrive Geared up with a glycerin-crammed glass bulb. Since the glycerin heats up because of the heat from the fire beneath, it expands, shatters the glass bulb, and triggers the sprinkler head. The fire sprinkler swap senses this move of drinking water and transmits a sign towards the fire a