A smoke detector is a device that detects smoke, typically as an indicator of fire. It is an essential safety device that can help to alert occupants of a building to a fire, giving them time to evacuate. Smoke detectors work by using a sensor to detect smoke particles in the air. When smoke is detected, the detector will sound an alarm, alerting occupants to the danger.
Smoke detectors are typically powered by batteries, which need to be replaced regularly to ensure that the detector is functioning properly. Replacing the battery in a smoke detector is a simple process that can be done in a few minutes.