FIRE ALARM SYSTEMS SECRETS

smoke, cause a fire sprinkler. Most fire sprinkler heads occur Outfitted that has a glycerin-loaded glass bulb. As being the glycerin heats up due to the warmth from the fire down below, it expands, shatters the glass bulb, and triggers the sprinkler head. The fire sprinkler switch senses this stream of h2o and transmits a sign towards the fire ala