A smoke detector is a device that detects smoke, typically as an indicator of fire. Smoke detectors are usually installed on the ceiling of a building or other structure. Smoke detectors are typically powered by batteries, although some are also hardwired into a building’s electrical system. To open a smoke detector, you will need a screwdriver.
Smoke detectors are an important part of a home safety plan. They can help to alert you to a fire in your home, giving you time to evacuate. Smoke detectors should be tested regularly to ensure that they are working properly.