snippet: 4Wire Qwikbus B&W Monitor-Anthracite Surface Mount Style-Includes Handset and Surface Housing and Mounting Bracket. The Alpha Communications® / S.T.R.™ VH3033-4A 4-wire monitors is designed to meet virtually any requirement for video-intercom security, while not requiring any riser coaxial cabling, or any selective (home-run) wiring. (Page 1)