Outdoor Sensor: The wireless sensor array connects to the console via RF (433 MHz) up to 330feet (100m) line of sight in open air (60m under most conditions). The sensor array's primary power source is a solar panel which charges the super capacitor, with optional battery backup (batteries not included). Forecast: The smart console converts complex sensor data into an easy-read symbol! See if today will be sunny and clear, slightly cloudy, cloudy, rainy, rainy and stormy, or . High-Low Alerts: Get detailed forecasts like never before! Station lets you know about extreme changes in temperature and humidity, wind speed, barometric pressure, high heat index, low wind chill, and dew point. Gorgeous LED Console: The sleek full-color screen displays beautifully on a nightstand, coffee table or kitchen counter. Plug it in for continuous tracking or insert the included battery for backup power. Technical Parameters: Outdoor temperature: -40~+60; 1C Indoor temperature: 0~+60; 1C Humidity: 10%~99%RH (1% resolution); 5% Air pressure: 300 to 1100hpa; 3hpa Rainfall: 0 - 9999mm Wind speed: 0~50m/s Wind speed accuracy: 2 m/s ~ 50 m/s; Wind direction accuracy: 8 points Sampling time: 60s Wifi standard: 802.11 b/g Wireless frequency: 2.4GHZ WIFI transmission line of sight: 20m Power supply: (battery not included in delivery) 1)Base Station / Console:3x AA 1 . 5V LR6 Alkaline ( NOT Included 2)Outdoor Sensor ( Backup2 x AA 1 . 5V LR6 Alkaline ( NOT Included ) or 2 x AA 1 . 5V Lithium battery ( NOT IncludedInstalling your Personal Weather Station The location of your weather station is the most important part of installation. If your weather station is located under a tree or an overhang, the rainfall data measured by the station will not be correct. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Voltage: AC 220V Colour:white+black Material:plastic Package Contents: 1 x internal unit 1 x outdoor sensor (outdoor unit) 1 x installation kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.