Digital display monitors data from any AcuRite 5-in-1 weather sensor (sensor sold separately) Tracks indoor and outdoor temperature and humidity rainfall wind speed wind direction barometric pressure and the weather forecast Heat index wind chill dew point and 'feels like' calculations Weather Ticker streams real-time data including the indoor comfort level 'feels like' temperature moon phase and more Illuminated color display with adjustable dimmer; electric-powered with optional battery backup