Kidde i9060/KN-COB-B-LPM Carbon Monoxide and Smoke Alarm Value Pack One 9-volt and three AA batteries included; provides protection during power outages Protects your family against two potential home dangers, smoke and carbon monoxide Test/reset button tests the unit for proper operation and resets the carbon monoxide and smoke alarm Loud 85 decibel alarms in both the carbon monoxide and smoke alarm; 10 year warranty Kidde's carbon monoxide and smoke alarms meet the requirements of Underwriters Laboratories (UL)