Not known Facts About fire alarm systems
smoke, cause a fire sprinkler. Most fire sprinkler heads arrive equipped which has a glycerin-stuffed glass bulb. As the glycerin heats up due to the warmth from a fire down below, it expands, shatters the glass bulb, and triggers the sprinkler head. The fire sprinkler swap senses this circulation of h2o and transmits a signal towards the fire alar