Features: 1. Indoor and outdoor temperature (oC/oF Selectable) 2. Indoor temperature range: 0℃~50.0℃（14℉~122℉） 3. Outdoor temperature range: -20℃~65℃（-4℉~149℉） 4. Indoor and outdoor humidity range: 20%~95% 5. Records max/min temperature and humidity (in & out) 6. Weather forecast for 5 modes: Sunny, Sunny To Cloudy, Cloudy, Rainy, Stormy 7. RF Channel For Outdoor Sensor 8. Alarm and snooze function 9. Time display in 12/24H 10. White backlight lasts for 10 seconds after pressing the “Snooze/Light” button 11. 100 meters wireless transmitter in open area 12. Moon phase and calendar function（Weekday display in 7 languages available） Postion Method: table standing or wall hanging Main unit: powered by 2*AAA batteries (Not included) Sensor: powered by 2*AAA batteries (Not included) Specification Item Size: main unit: 80x22x160mm Sensor: 60x27x96mm Net weight: 220g Package weight: 250g Color: Black with Silver Package contains: 1x In/out THERMOMETER, 1x WIRELESS SENSOR; 1x Instruction Manual