6.5The ABUS First Alert 3120B Carbon Monoxide Detector is a reliable and essential home security device that operates on battery power. This CO gas monitor alarm is designed to detect dangerous levels of carbon monoxide and alert you with a loud, audible signal. With a manufacturer warranty of 3 years, you can trust in the durability and performance of this unit. The sleek white design adds a touch of elegance to any room while providing peace of mind for you and your family. Don't wait until it's too late, invest in this battery-powered CO sensor detector for your home.