First Alert First Alert Battery Powered Z-Wave Smoke and Carbon Monoxide Alarm

One of The Most Trusted Brands in Home Safety: Communicates with First Alert protocol enabled Z-Wave technology wireless hubs; Single button test and silence; Photoelectric Smoke and Electrochemical CO Sensors; 2AA Batteries - Save 33% on annual battery replacement costs; End of Life Signal provides audible notification alarms needs to be replaced; Side access drawer for easy battery replacement; Works with the Ring Alarm Security Kit. Sends alerts to your phone and tablet