1The projection function supports simultaneous projection of time and temperature. There are switches to choose sustainable projection or turn off projection 2Double alarm clock function, can choose 3Weather forecasting function for the next 8 hours. 4Indoor climate comfort and indoor heat index are displayed. 5Backlight: Backlight is long and bright in 4 options (high/medium/low/not bright)Feature: The projection function supports simultaneous projection of time and temperature. There are switches to choose sustainable projection or turn off projection "indoor temperature + time" and "outdoor temperature + time" alternately.Double alarm clock function, can choose "Mon to Fri ring", "only weekend ring" or "seven a week ring".Weather forecasting function for the next 8 hours.Indoor climate comfort and indoor heat index are displayed.Outdoor Sensors: Up to three outdoor wireless sensors are supported at the same time (packaging contains only one). 433.92MHz RF Sensing Frequency, 60m Sensing Range.Backlight: Backlight is long and bright in 4 options (high/medium/low/not bright)Specification: Power supply: CR2032 lithium battery (No-included) Plug type: US plug DCF/WWVB/MSF automatic timing function: Yes Waterproof grade: 4 Support display languages: English, German, Italian, French, Spanish, Dutch and Danish Display: time 12/24, date, week Temperature detection: indoor measurement range:-9.9 - 50 (15 - 122); outdoor measurement range:-20 - +60 (-4 - 140) Pressure measurement: 600 hPa/mb~1100 hPa/mb (17.72 inHg~32.48 inHg) Humidity detection: 20% RH - 95% RH Product dimension: 16.8*10*3.8cm / 6.6*3.9*1.5in Weight: 445g / 15.7oz Package list: 1 * Projection alarm 1 * Power adapter 1 * User manual 1 * Sensor Note: Please kindly make a note if you need any plug adapter. The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product.