Not known Details About fire alarm systems
smoke, set off a fire sprinkler. Most fire sprinkler heads appear equipped that has a glycerin-stuffed glass bulb. As being the glycerin heats up as a result of warmth from a fire under, it expands, shatters the glass bulb, and triggers the sprinkler head. The fire sprinkler swap senses this circulation of h2o and transmits a sign into the fire ala