The Oregon Scientific Complete Wireless Weather Station is just that – a complete weather station which uses outdoor sensors that operate on solar power (use 2 x AA batteries for backup) and provides easy installation. Some features on the Complete Wireless Weather Station include Long-range sensors that transmit up to 300-feet, a self-emptying Rain Gauge which measures rainfall, an anemometer that measures wind speed and direction, precise measurements of the indoor temperature, humidity and barometric pressure, LCD screen with backlight and much more. There’s also the option of using up to three additional sensors for a total of another seven optional channels. Why would you want more sensors? For a more precise reading. This Weather Station uses a total of (8 x AA) batteries not counting the two for back up and has a price of $299.95. Oregon Scientific.