Smoke, bring about a fire sprinkler. Most fire sprinkler heads come Outfitted which has a glycerin-crammed glass bulb. Given that the glycerin heats up due to warmth from the fire below, it expands, shatters the glass bulb, and triggers the sprinkler head. The fire sprinkler switch senses this move of https://sergiobthwl.sharebyblog.com/35144723/wireless-fire-alarm-systems-an-overview