Wireless Outdoor Weather Station °F/°C Thermometer Hygrometer w/ 3 Forecast SensorOOTDTYCured Weather Station with Touch Screen °C/°F Thermometer Hygrometer with 3 Forecast Sensor Temperature and Humidity IndicatorProduct Features:Indoor & Outdoor Temperature & Humidity Measurement, Celsius & Fahrenheit ConversionHighest & Lowest Temperature Humidity Memory Function View Historical Temperature & Humidity Data Connect Up to 3 Outdoor Units (Package with One Outdoor unit) High magnetic magnets on the back of the main unit that can be attached to metal objects On the back the main unit has a bracket that can stand horizontally High sensitivity touch controlled by buttons for easy operation Comfort indication, temperature and humidity trend indicationHTN large screen without view LCD display with backlight backlight turns off automatically after 10 seconds without operation Outdoor unit can be hung through hanging holes or standing on a horizontal surface. XP4 Outdoor Unit WaterproofProduct Parameters:Indoor Temperature Range: -4°f-158°f (-20°c-70°c)Outdoor Temperature: -40°f-158°f (-40°c-70°c)Humidity Range: 20%-95%Comfort Display: Dry, Comfortable, WetTemperature Display Unit: °c/°f optional (default is °c)Temperature Resolution: 0.1°c/°fHumidity Resolution: 1%Refresh Rate: 10 seconds. Error: Temperature is plus or minus 1 °c, humidity is plus or minus 5% Wireless Receiving Range: 60 meters/197 feet RF Radio Frequency: 433 MHz Power Supply: AAA Battery (