USI Electric Battery Operated Combination 2-in-1 Photoelectric Smoke and Fire Alarm Detector, 10-Year Sealed (Case of 6)

The Universal Security Instruments Photoelectric Smoke and Fire 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. 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. This alarm exceeds industry standards by meeting new laws and legislation. The Universal Security Instruments MP316SB Photoelectric Smoke and Fire Alarm is ETL listed to UL Standard UL 217 and is also California State Fire Marshal approved.|10-year sealed batteries provide continuous protection - even in the event of a power outage|Lithium-Free permanent power from Duracell Duralock Power Preserve technology|Tamper proof design provides a higher level of security and prevents battery removal|Photoelectric technology is typically more effective at detecting slow smoldering fires