Specifications:1) Precipitation Display Range: 0 to 19,999mm2) Outdoor Temperature: -40 - +65C (-40F to +149F)3) Indoor Temperature Range: -9.9 - +60C (-15.8F to +176F)4) Temperature Accuracy: 1.0C5) Power Requirements:A) Receiver: 2 "AA" Alkaline Batteries (Not Included)B) Rain Indicator: 2 "AAA" Alkaline Batteries (Not Included)6) Transmission Range: up to 100 meters (330 feet)7) transmission frequency: 433MHzFeatures:1). Outdoor Wireless Sensor (Range up to 100 meters)2) Detailed display of precipitation data in 1 hour, 24 hours, week, month, and total since last reset (user selectable in inches or mm)3) Indoor temperature and outdoor temperature (F to C)4) Time and date with manual setting option5) 12/24 hours time mode6) Calendar7) Time zone setting8) Time alarm9) FreestandingPackage Included:1 x Rain Indicator1 x Receiver1 x Manual Support2pcs screws