Product function introductionWeather Station Time calendar display: January 1, 2000 to December 31, 2099 Time format 12HR/24HR display selection Display the day of the week and three-character abbreviated month in eight languages: English, German, French, Italian, Spanish, Dutch, Danish, and Polish Dual time alarm function, alarm repeat and snooze function (snooze time: can be set for 5-60 minutes) Sunrise/sunset display for 251 cities around the world Set your own city, time zone and latitude and longitude to display sunrise/sunset times 12-level moon phase and 3-level tide display Temperature detection range: INDOOR: -9.9 - and50 and and14 - and122 OUTDOOR: -40and70 and -40and158 Indoor and outdoor humidity detection range: 20%95% Indoor temperature and humidity detection cycle: 60S Displays indoor level 3 mold risk warning Displays 5 levels of indoor and outdoor comfort Indoor and outdoor temperature and humidity upper and lower limit alarms and frost point alarm functions 433MHz ASK RF receives outdoor temperature and humidity 433MHz ASK receiving OUTDOOR transmitter, receiving up to 3 RF effective channels (only 1 outdoor unit is included in the package) Temperature display format selection (C/F) Temperature and Humidity Trend Display INDOORandOUTDOOR Record the maximum and minimum values of temperature and humidity on the day Air atmospheric pressure unit selection: mb/hPa or inHg Histogram display of the trend change of atmospheric pressure in the past 3, 6, 9, 12, 18 and 24 hours with the current atmospheric pressure 6 weather forecasts: sunny, cloudy, overcast, light rain, heavy rain, snow 3-level air pressure trend display Backlight function: When powered by battery, the backlight lights up for 15 seconds. Backlight when powered by DC-POWER: 5 levels of brightness (high 4 levels low, off), automatic backlight mode can be set Checklist (6) General packaging list: 1 x weather clock, 1 x USB power cord, 1 x sensor, 1 x instruction manual in five languages. 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.