SMK&CRBN HRDW BTRYBK-UP *Brand Name: First Alert *Sub Brand: 10 Year Back Up *Power Type: Hard-Wired w/Battery Back-Up *Sensor Type: Ionization *Product Type: Smoke and Carbon Monoxide Detector *Packaging Type: Carded *Number in Package: 1each *Warranty: 10 year *Discovery ACC, SUP