21010407 Kidde

The Kidde Smoke Alarm models are sealed-in lithium battery devices available with either photoelectric or ionization sensing technology. Photoelectric sensing alarms are designed to detect visible particles (associated with smoldering fires) sooner than ionization alarms. Ionization sensing alarms are designed to detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms. This series includes models for living areas, bedrooms, and hallways. All models offer worry-free features to make installation easy and to help users aware of replacement requirements.Features and BenefitsSealed-In Lithium Battery - Sealed-in lithium power supply to reduce the need for battery replacement over the 10 year life of the alarmAlarm automatically activates when attached to the mounting bracketRapidly flashing LED alerts user if the alarm has sounded since the last time the test/reset button was usedTest/Hush Button tests alarm circuitry and activates Hush featuresSmart Hush™ - Button to temporarily silence nuisance alarm for approximately 10 minutes and will not allow hush mode unless the unit is in alarm modeEnd of life warning - Alarm chirps every 30 seconds to indicate the unit is in need of replacementEnd of Life Hush® - Alarm can be silenced three days at a time up to 30 days to allow for alarm replacement at a more convenient time