The projection function supports simultaneous projection of "time and temperature". There is a switch to select continuous projection or close projection, and "indoor temperature+time" and "outdoor temperature+time" are displayed alternately. Time (12h/24h), date and week (7 languages) display: English, German, Italian, French, Spanish, Dutch and Danish.Dual alarm clock function. You can select "Ring from Monday to Friday", "Ring on weekends only" or "Ring 7 days a week" to forecast the weather for the next 8 hours. Indoor climate comfort display; Indoor thermal index value display, outdoor dew point temperature display. Three levels of indoor/outdoor mildew risk tips.Temperature and humidity detection: --Indoor measurement range: - 9.9 ~50 (15 ~122 ) --Outdoor measurement range: - 20 ~+60 (- 4 ~140 ) Humidity detection: --Indoor/outdoor measurement range: 20% RH 95% RHOther functions: --Measuring range: 600hPa/mb 1100hPa/mb (17.72inHg 32.48inHg); Outdoor high and low temperature and frost point alarm function; Record of maximum and minimum indoor and outdoor temperature and humidity; Adapter power supply: the backlight is always on and 4 gears are optional (high light/medium light/low light/no light)Outdoor sensor: --Up to 3 outdoor wireless sensors are supported at the same time (only one is included in the package). --433.92MHz RF sensing frequency, 60m sensing range, IPX4 grade waterproof Power Supply: --CR2032 lithium battery (not included in the package) --American standard adapter 5V