Features:1. Indoor and outdoor temperature (oC/oF Selectable)2. Indoor temperature range: 0~50.014~1223. Outdoor temperature range: -20~65-4~1494. Indoor and outdoor humidity range: 20%~95%.5. Records max/min temperature and humidity (in ands 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.Specification:Item Size:main unit: 80x22x160mm/3.1*0.8*6.2 INSensor: 60x27x96mm/2.3*1*3.7 INNet weight: 220gPackage weight: 250gColor: Black/whitePostion Method: table standing or wall hangingMain unit: powered by 2*AAA batteries (Not included)Sensor: powered by 2*AAA batteries (Not included)Package contains:1x B0201 In/out THERMOMETER, 1x WIRELESS SENSOR; 1x Instruction Manual