A fire detector is a device that detects smoke or heat, and then triggers an alarm to warn people of a fire. Fire detectors are an important part of any home safety plan, as they can help to alert people to a fire and give them time to escape. There are two main types of fire detectors: smoke detectors and heat detectors.
Smoke detectors detect smoke particles in the air, while heat detectors detect heat. Both types of detectors are effective at detecting fires, but smoke detectors are more sensitive and can detect fires earlier. Heat detectors are less sensitive, but they are more resistant to false alarms.