The 8” diameter collector meets NWS specifications for statistical accuracy. Each time the bucket tips, a count is transmitted to the indoor display, and the gauge empties. Wired and wireless models available. The single counter model displays up to 9.99” of rain and can be reset to zero after each rainfall. The dual counter model features both a current counter which records rainfall in hundredths of an inch with a capacity of 9.99”, as well as an accumulation counter which records rainfall in tenths of an inch up to 99.9” of rain and allows you to select the number of individual rain events recorded. A long-life alkaline battery is included.