First Alert Home Weather Station with Radio Controlled Clock is perfect for the living room or night stand. It features an amber back-lit display with automatic dimmer, and red LED projector that allows you to view the time and current weather symbol on your ceiling or wall. The unit includes a wireless outdoor sensor with 99 foot range, and the main unit features a large display that shows indoor and outdoor temperatures, temperature trend, time, date and day of the week plus an icon shows the current conditions - sunny/slightly cloudy/cloudy/rainy. Never be late with the built-in dual alarm and clock that automatically sets itself. The radio operates on batteries (not included), or with the included AC adaptor.