Dakota Alert 1000 Wireless Doorbell Ring Detector, Stainless (DC-1000) The DC-1000 offers a simple do-it-yourself solution for mounting a doorbell in a home or business The wireless push button will send a signal up to 1000 feet* back to the base, which can play any of 16 different tunes to alert you The push button operates on one CR-2032 (included) and the base operates on 3 "C" cell batteries (not included)