Product Description Function Description. Indoor and outdoor temperature and humidity measurement Weather forecast, alarm clock, snooze Fahrenheit or Celsius convertible Large colour screen display Moon phase display, atmospheric pressure display 12 or 24 hour time, calendar, day of the week display Automatic radio time calibration function (WWVB DCF MSF, with DST function) Seven-country day of the week display: EN GE FR SP IT DU DA (DCF and NO RCC-EU have this function) Product parameters: 1. Measuring range. Indoor temperature display range: -9.9C to and50C and 14F to and122F Indoor humidity display range: 20 percent RH - 95 percent RH Outdoor temperature display range: -40and60 and -40and140 Outdoor humidity display range: 20 percent RH - 95 percent RH Atmospheric pressure display range: 600hPa or mb to 1100hPa or mb and 17.72inHg to 32.48inHg 2. Resolution. Temperature display resolution: 0.1C and 0.1F Humidity display resolution: 1 percent RH Atmospheric pressure display resolution: 1 hPa or mb and 0.03 inHg 3. Error. 0C to 40C or 32F to 104F: 1C or 1.8F -200 or 4065 or -432 or 104149: 2C or 3.6F 40 percent RH80 percent RH: 5 percent RH 4. Host product size: 198x136x40MM, transmitter size: 5x2.6x10.5CM 5. Single product package size: 207x55x149MM 6. Single product package weight: 532G 7. Number of boxes: 40PCS 10. Power supply: host 3xAAA three No.7 batteries or adapter, transmitter 2xAAA two No.7 batteries (list does not include batteries) 11. Packing list: main unitx1andtransmitterx1andadapterx1andmanualx1 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.