Smoke, set off a fire sprinkler. Most fire sprinkler heads arrive equipped which has a glycerin-crammed glass bulb. As being the glycerin heats up because of the warmth from a fire underneath, it expands, shatters the glass bulb, and triggers the sprinkler head. The fire sprinkler change senses this flow https://firealarmsystems79012.life3dblog.com/34204297/5-simple-techniques-for-fire-alarm-systems