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 "Monday to Friday ring", "only weekend ring" or "seven days 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. .