Wireless Forecast Station, With Moon Phase, Temperature Sensor Reads Down To -39.8 Degrees Fahrenheit Degrees, Weather Forecasting Function With 3 Weather Icons & Weather Tendency Indicator, 8 Moon Phase Icons, Wireless In/Out Temperature, Fahrenheit Degrees/Celsius Degrees, Min/Max Value Of Temperature, Wireless In/Out Humidity, %RH, Time Display, Manual Setting, 12/24 Hour Time Display, Low Battery Indicators, Transmission Range: 330', Temperature Range: Indoor: 14.2 Fahrenheit Degrees To 139.8 Fahrenheit Degrees, -9.9 Celsius Degrees To 59.9 Celsius Degrees, Outdoor: -39.8 Fahrenheit Degrees To 139.8 Fahrenheit Degrees, -39.9 Celsius Degrees To 59.9 Celsius Degrees, Humidity Range: Indoor: 20% To 95% Outdoor: 1% To 99%, Power Requirements: Receiver: 2 "AAA" Alkaline Batteries, Not Included, Sensor: 2 "AAA" Alkaline Batteries, Not Included.