Hardwired Smoke Alarm, With 10 Year 9V Battery Back Up, 120V, Equipped With Ionization Sensor, Reliably Detects Smoke From Fast Flaming Fires Alerts You With 85 Decibel Alarm, Includes Adapter Plugs Adapter Plugs That Eliminate The Need For ReWiring During Installation, Designed For Easy Accessibility With Single Bottom For Testing Silencing, Universal Mounting Bracket Included For Easy Installation, , NOTE Please Check Your Local Building Code Requirements Before Installing This Product To Determine Compliance With Applicable Standards