Photoelectric Smoke & CO Alarm, Hardwired w/Battery Backup Brand_J-B Weld Clear smooth round shape and

Clear smooth round shape and design

Holds power for 8 years in storage & used in heart rate monitors

batteries included #lr521

The result

Photoelectric Smoke & CO Alarm, Hardwired w/Battery Backup Brand_J-B Weld Clear smooth round shape and120V AC DC Photoelectric Smoke Alarm, With Carbon Monoxide Alarm, Easy Installation & Maintenance, Large Opening In The Mounting Bracket For Easy Access To Wiring, Key Hole Slots In The Mounting Bracket Eliminate The Need To Remove The Electrical Box Screws For Installation, A Battery Pull Tab Keeps The Battery Fresh Until The Home Is Occupied, Battery Installation & Removal Can Occur While The Unit Is Mounted To The Ceiling Or Wall Via The Side Load