Features:Brand new and high qualityMCU power pressure 3VMCU frequency:32.768Khz and 3.58Mhz (Fast frenquency)LCD driver4 keys operationPerpetual calender，clock alarm，snoozeClock format: 12/24H.Wireless temperature and humidity outdoor receiving，switching channel automatically and manuallyIndoor Temperature Range: 0¡æ ~ 70¡æ， accuracy:¡À1¡æOutdoor Temperature Range: -40¡æ ~ 70¡æ， accuracy:¡À1¡æIndoor/Outdoor Humidity Range: 20%~95%， Accuracy:¡À5%Sensor Error Display: If the measure value is lower or higher than the range，it will display --¡æ/%Moon phaseBarometric pressure range:300hpa~1100hpa， accuracy:¡À5hpa.High/Low barometric pressure alarmWeather forecast tendency indicatorLow voltage indication with icon flashValid keypad toneBack light，press channell/light/sz illumines the LCD screen for 10 secondsWeather Station(Receiver) Power by :3x 1.5V AA Battery (NOT included)Weather Station(Transmitter) Power by :2x 1.5V AAA Battery (NOT included)Size: 18cm x 10cm x 3cm - 7.06inch x 3.92inch x 1.18inchPackage Included:1 x Weather Station Receiver1 x Weather Station Transmitter1 x Mounting Screws1 x Instruction ManualNO Retail Box. Packed Safely in Bubble Bag.