Included PC Interface Wind Chill, Direction and Speed Rain Data Forecast w/ Tendency IN/OUT Temp IN/OUT Humidity Weather Alarms w/ Storm Warning Dimensions: Receiver: 6.3" x 6.1" x 1.2" Thermo-Hygro: 5.5" x 2.8" x 2.5" Rain Sensor: 5.5" x 5.75" x 2.5" Wind Sensor: 8" x 10" x 2.75" Records 175 sets of weather data history with "Heavy Weather" PC software Upload weather data to your PC with easy COM port connection Weather forecasting function with 3 weather icons and weather tendency indicator Wireless outdoor temperature (°F or °C) Wireless outdoor humidity (%RH) Monitors indoor temperature (°F or °C) Monitors indoor humidity (%RH) Records MIN/MAX temperature with time and date of recording Records MIN/MAX humidity with time and date of recording Barometric air pressure (inHg or hPa) Records MIN/MAX barometric pressure with time and date or recording Barometric tendency arrow Dew point (°F or °C) Records MIN/MAX dew point display time and date or recording Wind direction with LCD compass (numerical (e.g. 225°) or abbreviated characters (e.g. SW)) Wind speed (mph, km/h, or m/s, and Beaufort Scale) Wind chill (°F or °C) Records MIN/MAX wind chill with time and date of recording Records Max wind speed with time and date of recording Rainfall data (inches or millimeters): 1 hour, 24 hour, and total Records MAX rainfall with time and date stamp Storm warning and weather alarms Atomic time and date with manual setting Automatically updates for Daylight Saving Time (on/off option) Time zone setting US time zone map LED backlight Wall hanging or free standing 12/24 hour time display Transmission range up to 330 feet (100 meters) Specifications: Wireless Outdoor Humidity Range : 1% to 99% Wireless Outdoor Temperature Range : -21.8°F to +157.8°F Indoor Temperature Range : 14.1°F to 139.8°F Swiss Precision Sensor Power requirements: Receiver: 3 "AA" Alkaline Batteries or AC Power Adapter (INPUT 120V AC 60HZ) Included Wireless Thermo-Hygro Sensor: 2 x "AA" Alkaline Batteries or can draw power from the adapter if used Wind and Rain Sensors: Power by Thermo-Hygro Sensor © Copyright