FIRE ALARM SYSTEMS THINGS TO KNOW BEFORE YOU BUY

smoke, result in a fire sprinkler. Most fire sprinkler heads appear equipped using a glycerin-filled 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 change senses this stream of water and transmits a sign for the fire alarm co