Product information Technical Details Brand BRK Style ?Precision Detection Power Source ?Battery Powered Color ?White Product Dimensions ?5.6"D x 5.6"W x 1"H Item Weight ?9.6 ounces Alarm ?Smoke Alarm Sensor Type ?Ionization Number of Items ?1 Manufacturer ?Resideo UPC ? Country of Origin ?Mexico Item model number ?SMI100-AC Size ?1-Pack Pattern ?SMI100-AC Item Package Quantity ?1 Included Components ?Easy Adapter Plug, 9V Alkaline Battery Batteries Included? ?Yes Batteries Required? ?Yes Battery Cell Type ?Alkaline