Specifications: 1) Rain gauge display range: 0 to 19,999 mm 2) Outdoor temperature range: -40 ~ +65°C (-40°F to +149°F) 3) Indoor temperature range: -9.9 ~ +60°C (-15.8°F to +176°F) 4) Temperature precision: ±1.0°C 5) Power supply: a) Receiver: 2 x \"AA\" alkaline batteries (not included) b) Rain gauge: 2 x \"AAA\" alkaline batteries (not included) 6) Transmission range: up to 100 meters (330 feet) 7) Transmission frequency: 433MHz Features: 1) Wireless outdoor sensor (range up to 100 meters) 2) Detailed display of rainfall data for 1 hour, 24 hours, week, month, and total since last reset (user can choose between inches or mm) 3) Indoor and outdoor temperature (°F to °C) 4) Time and date display with manual setting 5) 12/24 hour time mode 6) Calendar 7) Time zone setting 8) Time alarm 9) Freestanding Package includes: 1 x Rain gauge 1 x Receiver 1 x User manual 2 screws