FIRST ALERT FAT1039746 CO615 Dual Power Carbon Monoxide Plug in Alarm w Display Category_Carpets and Liners Fully Adjustable Legs With 5 Stainless steel blades dicing Fully Adjustable Legs With 5 Precut Extendable Lengths And Flexible In Between Positions Lockable Via Thumb Wheel Rescue Throw Bag With Adjustable Strap And 3M Reflective Exterior Safety Band Model number CO615Dual power carbon monoxide alarm offers continuous monitoring of carbon monoxide levelsPlugs into any outlet & features battery backupBacklit digital display shows readings for power & carbon monoxideSingle test silence button for simple operationEnd of life timer signals when the detector needs replacing7 year limited warrantyIncludes 2 AA batteries what the carbon monoxide and power levels are