The battery-powered smoke detector is a type of fire alarm that is powered by a battery rather than being hardwired to an electrical system of a building. It uses sensors to detect smoke & other indicators of a fire and sounds an alarm to alert building occupants. They provide a cost-effective and reliable solution for fire safety, & the batteries can be easily replaced to ensure the detector remains operational. Battery-powered smoke detectors are easy to install and are commonly used in residential and small commercial buildings.