Features: Time/date display. Perpetual Calendar Up to Year 2099 Eight-nation week language selection (English, German, French, Italian, Spanish, Dutch, Danish, Russian) Two daily alarms and automatic snooze function (OFF or 5~60min, its alarm time, alarm period, snooze time and snooze times can be set) Warning functions such as upper and lower limits of temperature and humidity, upper limit of wind speed and upper limit of rainfall. Display of somatosensory temperature, wind chill index, thermal index and dew point temperature. (converted from temperature and humidity, air pressure, wind speed, etc. detected in the machine) ASK receives remote transmitter signal (100m signal transmission). Class 3 backlight (brightness can be adjusted when powered by usb, and the screen can only be lit for 15 seconds when powered by battery) Mainframe power supply: usb cable powered DC 5V1.2A, battery: 2 * AA batteries (not included in the shipment). Outdoor Sensor power supply: 3 * AA batteries (not included in the shipment) Multi-combination wireless Outdoor Sensor: 433 . 92MHZ RF transmitting frequency. 100 meters ( 300 feet ) transmission range in an open area Specifications: Color: Black Material: ABS Indoor temperature detection range: 0 ~+50℃(32 ~ 122 ℉) Indoor humidity detection range: 20 ~ 95% Indoor temperature and humidity detection cycle: 60S. Outdoor temperature detection range:-40 ~+70℃(-40 ~ 158 ℉) Outdoor humidity detection range: 20 ~ 95% Air pressure detection range: 600 ~ 1100 HPA ( 17.72 ~ 32.48 INHG & 450 ~ 825.1 mmHg) Wind speed detection range: 0 ~ 180 km/h(0 ~ 111 mph) Wind direction detection range: 0 ~ 359 degrees Rainfall detection range: 0 ~ 9999mm & 0 ~ 393.7in. Host Size: 20.5 * 13 * 3 cm / 8.07 * 5.12 * 1.18 inch Sensor Size: 38 * 30 * 9 cm / 14.96 * 11.81 * 3.54 inch Package Size: 37.8 * 13.5 * 27.2 cm / 14.88 * 5.13 * 10.7 inch Package Weight: 1693g / 59.72oz Package Included: 1 * Weather Station 1 * USB Power Cable 1 * Outdoor Sensor for Wind Speed and Rainfall 1 * Instruction Manual (EN/DE/FR/IT/ES) 1 * Installation Accessories