First Alert SMOKE1000-3 Atom Micro Photoelectric Smoke Alarm 3 Pack;

First Alert SMOKE1000-3 Atom Micro Photoelectric Smoke Alarms provide the same maximum protection of traditional photoelectric smoke alarms in a streamlined, miniature design. Measuring just 1.87 inches in diameter, each of the micro smoke alarms in this pack of three has a more stylish and less obtrusive appearance than a standard alarm. These smoke detectors each features optical photoelectric sensing technology for accurate detection and reduced nuisance alarms from cooking smoke or shower steam. They each emit a loud 85-decibel siren that is designed to be heard by even the soundest sleepers. Each smoke alarm can be silenced and tested easily with the press of a single button. Three 3-volt lithium batteries are included (one battery for each detector) for up to one year of continuous power, and SmartClip safe mount systems ensure each unit cannot be mounted without a battery supplying power to the alarm.