SITERWELL Smoke Detector, Detector 10 Year Battery with 4-Pack, White
【Magnet and Screw Included】Magnets and screws are included, Siterwell kitchen smoke alarm can be easily mounted on the wall or ceiling. Publisher: SITERWELL. 【10 Years Battery】The battery-operated smoke alarm has a built-in 3V lithium battery, which runs for 10 years and reminds you when the battery is low.