The Midland(r) WR-10 7-channel Weather/Hazard/Civil Emergency alert monitor receives 24-hr a day, 162-Mhz National Weather bureau Broadcasts and can also be used as an AM/FM radio. The alert system turns the unit on or over-rides FM or AM radio when dangerous weather or a hazard arises to provide you advanced warning. It utilizes a digital, self-adjusting PLL weather tuner for maximum range of up to 50 miles.