The NOAA Weather Alert Emergency Channel sounds a very loud audible tone when an extreme weather condition is imminent and/or a police emergency has occurred or any type of public awareness becomes critical.No matter where you are the PR-D12 lets you listen to your favorite music, news and radio programs while keeping you safe with up to date weather forecasting and alerts.6WPower Supply: DC 9V / 700mABatteries (Main Power): 4 x 1. The PR-D12 is a rugged digital AM / FM Public Alert Certified Radio.