Kidde Battery Operated TruSense Smoke Detector with Voice Alert

TruSense technology differentiates between truly threatening fast-flaming or smoldering fires and nuisances such as burning food. As particles enter the alarm, the size of the particles is analyzed by a series of algorithms and consolidated into ratios to determine if these particles stem from a real fire or a nuisance source. Meets the new UL217 8th edition This model is powered by a 9-Volt battery located in a convenient, front load compartment. It also contains a voice message system and Smart Hush Control to temporarily silence nuisance alarms.