This alarm uses photoelectric sensing technology. Ionization sensing alarms may detect invisible fire particles (associated with fast flaming fires) sooner than photoelectric alarms. The P3010H contains a 10-year tamper proof battery that eliminates the need for battery replacement, and ends worry over unauthorized battery removal.At the end of alarm life, the unit will chirp, indicating the alarm is in need of replacement.

The innovative design allows for automatic activation once the unit is attached to the mounting bracket; there are no pull-tabs, no switches, everything is automatic. Photoelectric sensing alarms may detect visible particles (associated with smoldering fires) sooner than ionization alarms. Kidde Worry-Free Living Area Smoke Alarm with Sealed Lithium Battery Power, Model P3010L | CVS Ionization sensing alarms may detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms. The Kidde P3010L is a 10-year, sealed battery, smoke alarm with photoelectric sensing technology and Smart Hush feature.

The P3010H contains a 10-year tamper proof battery that eliminates the need for battery replacement, and ends worry over unauthorized battery removal.