PROTMEX PT20 Multifunction Weather Station Protmex PT20 multi-function digital weather station alarm clock. Has thermometer, hygrometer and barometer functions, configure a wirele sensor. These data can be used to predict weather conditions in the future. It not only lets you know the time and calendar, Dew point temperature & Heat index.Frost and temperature alert,Indoor comfort level expreion,but also helps you in your life. Suitable for a variety of locations, whether you are on the table or on the wall. Simple and modern design is a great tool and home decor. Specifications: Brand: PROTMEX Model: PT20 Color: BLACK OR WHITE Main Material: Acrylic panel+ABS Screen Type: Positives LCD Temperature Measuring: Indoor measurement ranges: -9.9 5014.2 122; Outdoor measurement ranges: --40 70-40 158. Humidity Measuring: Indoor & outdoor measurable range: 20%RH ~ 99%RH. Barometric Preure: 800 ~ 1100 hPa(2hPa). Supported air preure unit: hPa/mb/ inHg/ mmH. Weather Station Size: 172* 132 * 22mm Screen size:245*225*65mm Package Size: 245 * 225 * 65cm Package Weight: 550g PT20A /B Package List: 1 * Protmex PT20 Weather Station 1 * Wirele Outdoor Sensor (PT20B 2 Wirele Outdoor Sensor) 1 * USB Power Cord 1 * User Manual (English & German & French & Italian & Spanish) Note: AA batteries are not included. PT20C Package List: 1* Protmex Weather Station 1* Insert Power Adapter(battery not included) 3* Remote Sensors (battery not included ) 1* User Manual Item size: 6.7*5.2*0.6 Inch Weight: 1.7 lb MAIN FUNCTIONS Calendar. 7 languages for the weekday display: English, German, Italian, French, Spanish, Dutch and Danish. Personalized alarm clock, can be set to ring everyday or only on weekdays/ weekends. Moon phase & Weather forecast. Temperature, humidity and air preure measurement( and are supported) (1 temperature error and 5% humidity error are both normal.) The record of minimum and maximum temperature and humidity. Dew point temperature & Heat index. Frost and temperature alert. Indoor comfort level expreion. PT20A weather station can connect up to 3 remote sensors at the same time, and the data of each sensor will be automatically looped on the weather station screen. If you have only 1 remote sensor, please set the weather station and the remote sensor in the same channel. Channel 1 is recommended. NOTE: PT20A only 1 remote sensor is included in the package. Low battery reminder LED screen backlight Power supply. For weather station host: USB that can be used anywhere in any country. (does not include charging head) or Battery( 3 1.5V AAA (LR 03)) For remote sensor: 2 1.5V AAA (LR 03) NOTE: The batteries are not included in the package. If the data of outdoor sensor fails to transmit to the weather station, long pre"/RF" button to clear the channel data, then it will automatically re-detect and transmit the data.