Sun/Moon Rise/Set Based for 250 North American Cities Forecast w/ Tendency Barometric Pressure History IN/OUT Temp IN/OUT Humidity Moon Phase Dimensions: Receiver:10" x 7.5" x 1" Sensor: 2.36" x 2.87" x 4.76" All Features: 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 Records MIN/MAX humidity Barometric tendency arrow Barometric pressure with 30 hour history graph (in inHg or hPa) Indoor comfort level icon Calculates sun/moon rise/set based on entered city name (choose from 250 North American cities) Moon phase Storm warning alarm Atomic time and date with manual setting Automatically updates for Daylight Saving Time (on/off option) 12/24 hour time display Perpetual calendar Time alarm Wall hanging or free standing Can receive up to 3 sensors Specifications: Wireless outdoor humidity range: 1% to 99% Indoor humidity range: 1% to 99% Wireless outdoor temperature range: -21.8°F to 156.2°F Indoor temperature range: 14.2°F to 140°F Transmission range: Up to 80 feet Transmission frequency: 433.92 MHz Swiss precision sensor Compatible sensors: TX3U, TX3UP, TX6U, TX7U Power Requirements: Receiver: 3 “AA” Alkaline batteries Wireless sensor: 2 “AA” Alkaline batteries