The Kidde P3010L is a 10-year, sealed battery, smoke alarm with photoelectric sensing technology and Smart Hush feature.
Ionization sensing alarms may detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms. Kidde Worry-Free Living Area Smoke Alarm with Sealed Lithium Battery Power, Model P3010L | CVS Industry experts (such as the NFPA), recommend that both ionization and photoelectric smoke alarms be installed to help insure maximum detection of the various types of fires that can occur within the home. The P3010H contains a 10-year tamper proof battery that eliminates the need for battery replacement, and ends worry over unauthorized battery removal.Photoelectric sensing alarms may detect visible particles (associated with smoldering fires) sooner than ionization alarms.