The radiant collection is a step up from the standard with simple, classic options in wiring devices, home automation controls and screwless wall plates that complement today's homes.The AU7054-WH is a four-room Digital Audio Expansion Kit. Conveniently supplying all of the core components necessary to add four new rooms of audio onto an existing Digital Audio System, this kit comes complete with (4) AU7010-WH Digital Audio Amplified Keypads, (1) AU7004 Digital Audio Expansion Module, (1) PW1020 Digital Audio Power Distribution Module, and (1) PW1060 Power Supply. Kit includes four radiant Screwless Wall Plates.