1) Rainfall display range: 0 to 19999 mm 2) Outdoor temperature range: -40 ~ +65C (-40F to +149F)< /p> 3) Indoor temperature range: -9.9 ~ +60C (-15.8F ~ +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 : 433 MHz Features: 1). outdoor wireless sensor (range up to 100 meters) 2) Detailed display of rainfall data in 1 hour, 24 hours, week, month and total since last reset (user selectable in inches or mm) 3) Indoor and outdoor temperature (F to C) 4) Time and date with manual setting option 5) 12/24 hour mode 6) Calendar 7) Time zone setting 8 ) Weather alarm 9) Standalone Package includes 1 x rain gauge 1 receiver 1 user manual