Universal Security Instruments Usi Battery-powered Electrochemical/ionization/photoelectric Smok

The Universal Security Instruments MPC322SB 2-in-1 Photoelectric Smoke and Carbon Monoxide Alarm provides 10-years of continuous protection against deadly threats in the home. The utilization of Photoelectric Technology allows for increased efficiency in detecting slow smoldering fires. This USI 2-in-1 Alarm has also been equipped with a CO detector that's capable of sensing the presence of carbon monoxide in the surrounding area. Perfect for new or replacement installations, this maintenance-free alarm is suitable for houses, apartments and mobile homes. The sealed battery (included) will never have to be replaced throughout the life of the alarm, giving you a decade's worth in peace of mind even in the event of a power outage.