The Firex Carbon Monoxide Detector is a reliable and essential home security device that operates on 2 AA batteries, making it easy to install and use. With a loud 85 decibel alarm, electrochemical carbon monoxide sensor, and test/reset button, it provides peace of mind for you and your family. The sleek white design and compact dimensions make it easy to fit in any room, while the fixed installation ensures continuous protection. The included batteries and specific model, KN-COB-LP2, guarantee that you have a fully functional carbon monoxide detector for your home.