Wireless Doorbell is a perfectly simple way to conveniently add a doorbell wherever it may be needed around your home. The base station can be powered by a power adapter or has the ability to use 3 “C” cell batteries (both sold separately) in order to provide power for the base station, and one CR-2450 battery (included) required for the remote controller. Each DC-1000 base station can act as a table top unit or it can be wall mounted; the push button will typically mount to a door frame. Depending on the local Terrain,