Specifications:1) Rainfall display range: 0 to 19,999mm2) Outdoor temperature range: -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 x "AA" alkaline batteries (not included) b) Rain gauge: 2 x "AAA" alkaline batteries (not included)6)Transmission range: up to 100meters( 330feet)7) Transmission frequency: 433MHz Features:1).outdoor wireless sensor (range up to 100 meter)2) Detail display of rainfall data in 1hour, 24hour, week, month and total since last reset(user selectable in inch or mm) 3) Indoor and outdoor temperature (F to C)4) Time and date with manual setting option 5) 12 /24 hour time mode 6) Calendar 7) Time zone setting 8) Time alarm 9) Free standing Package included:1 x Rain Gauge1 x Receiver1 x User Manual2 Pieces of Screws