USI Hardwired 2-in-1 Photoelectric Smoke & Carbon Monoxide Alarm with 10 Year Tamper Proof Sealed Battery Backup (MPC122S)

The Universal Security Instruments MPC122S 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.Permanent Power also saves money from battery replacements (up to $38.00 over the 10-year life of the alarm), eliminates annoying low battery chirps and helps the environment by reducing environmental waste from disposed batteries. This detector features smart alarm technology to assis