NO HARDWIRE 

The Kiddie Compact 4 PACK Smoke Detector is a reliable and efficient home security device. With a photoelectric sensor, this smoke alarm provides early detection of smoke to ensure the safety of your family. The compact size, 4-inch diameter, and white color make it a seamless addition to any room. Powered by batteries this smoke detector from Kidde is backed by a 10-year manufacturer warranty. Perfect for households looking for a trusted and long-lasting smoke detection solution.