Question

what is a fire alarm ​

Answer 1

Question

what is a fire alarm ?

Answer

A fire alarm system has a number of devices working together to detect and warn people through visual and audio appliances when smoke, fire, carbon monoxide or other emergencies are present. Most fire alarm systems in Europe sound like a siren with alternating frequencies.

Answer 2

Answer:

fire alarm are inserted in the forests. when forest catches fire. the fire alarm starts alerting people that fire has broken. The resident of forest department come to protect the near by areas so that it doesn't turn a disaster.