No more stretching wires under windows and through walls! Exciting, innovative wireless outdoor sensors operate on solar power for simple installation and sophisticated use. Also included is an innovative graphical weather forecasting system. Easily recognized weather icons (sunny, partly cloudy, cloudy, rainy/snowy and stormy) display the forecast for the next 12-24 hours. Forecasts are based on electronic barometric-pressure sensing, and these weather predictions are considered to be about 75% accurate. All solar cells, batteries and AC adapter are included — no additional purchase is necessary to enjoy complete weather monitoring. Displays: Indoor/Outdoor Temperatures Indoor/Outdoor Relative Humidity Indoor/Outdoor Dew Points Barometric Pressure and Trend Wind Speed/Direction as Well as Wind Chill Weather Forecast Rainfall Rate and Daily/Accumulated Amounts Specifications: TEMPERATURE Outdoor Measuring Range: -4 to 140F (-20 to 60C) Indoor Measuring Range: 23 to 122F (-5 to 50C) Resolution: 0.2 (0.1C) Sampling Cycle: every 10 seconds RELATIVE HUMIDITY Measuring Range: 2% to 98%RH Resolution: 1% RH DEW POINT TEMPERATURE Outdoor Measuring Range: 32 to 138F (0 to 59C) Indoor Measuring Range: 32 to 120F (0 to 49C) Resolution: 2F (1C) BAROMETRIC PRESSURE/TREND Measuring Range: 23.48 to 31.01 inHg (795 to 1050 mb) Resolution: 0.03 inHg (1 mb) WIND SPEED Measuring Range: 0 to 125.3 mph (0 to 56 m/s) Resolution (typical): 0.4 mph (0.2 m/s) WIND DIRECTION Measuring Range 0 to 359 Resolution: 1 (typical) Graphical Resolution: 10 WIND CHILL TEMPERATURE Measuring Range: -62 to 140F (-52 to 60C) Resolution: 2F (1C) RAINFALL Daily and Cumulative Measuring Range: 0 to 393.7 in (O to 9,999 mm) Rainfall Rate Measuring Range: 0 to 39.37 in/hr (0 to 999 mm/hr) Resolution: 0.4 in (1 mm) GENERAL Display Unit Dimensions: 7-7/8” x 5-1/2” x 1-1/2” Display: Liquid Crystal (LCD) Clock: Time and date display (12/24 hour display selectable) Clock Accuracy: 0.5 Seconds/Day Display Unit Power Source: 12V AC/DC Adapter (4 “AA” Battery Back-up) Battery Life (Alkaline): About 36 hours Functions: At a glance The most complete weather monitoring system available today Indoor touchscreen monitor with bright blue backlight for the ultimate in sophistication and efficiency Calendar Clock with Alarm Weather forecast with 20-30 mile radius Min/Max Memory Desk or wall mountable Ultimate convenience in a compete personal weather monitoring system Everything’s included! And no wires to string anywhere makes for almost instant setup Add optional, third party PC link and software and monitor the weather outside your home-or your vacation home-from your home or office computer! Supplied With: Touch Screen Base Unit Solar Powered Wind Vane Solar Powered Anemometer Solar Powered Thermo-Hygrometer Solar Powered Rain Gauge Solar Powered Baro-Thermo-Hygrometer 12V AC Adapter