Rainfall display range: 0 to 19,999mm 2) Outdoor temperature range: -40 ~ +65C (-40F to +149F) 3) Indoor temperature range: -9.9 ~ +60C (-15.8F to +176F) 4 ) Temperature accuracy: 1.0C 5) Power requirements: a) Receiver: 2 "AA" alkaline batteries (not included) b) Rain gauge: 2 "AAA" alkaline batteries (not included) 6) Transmission range: up to 100 meters (330 feet) 7) Transmission frequency: 433MHz Features: 1). Outdoor wireless sensor (range up to 100 meters) 2) Detailed display of rainfall data for 1 hour, 24 hours, week, month and total since the last reset ( User selectable in inches or inches) mm) 3) Indoor and outdoor temperature (Fahrenheit to Celsius) 4) Time and date with manual setting options 5) 12/24 hour time mode 6) Calendar 7) Time zone settings 8) Time alarm clock 9) Stand-alone packaging list: 1 x rain gauge 1 x receiver 1 x user manual 2 screws