First Alert, Public Alert Radio, Monitors Noaa Weather Bank Radio Day & Night, Receives 80 Emergency Messages Including, Amber Alert, Civil Danger, Nuclear Power Plant, Hazardous Materials, Immediate Evacuation & More, Compared To 39 For Non-Public Alert Radios, Scrolling LCD Display Of Message Information In English Or Spanish, One Step Auto Programming Of County Code For Specific Location Alerts, Automatically Sounds A Loud Alert Siren When Emergency Conditions Occur In Your Area, Up To 24 Hour Battery Back-Up Protection, Block-Out Inappropriate Alerts, PC Upgradeable, Entire USA State & County Database Built-In For Easy Programming, Backlit Display With Tilt For Easy Viewing, Uses Digital S.A.M.E. (Specific Area Message Encoding).