... .dome or waterproof 3.network function IP video door phone, DVR video door phone,Video door phone, 4CH video door phone. 2-way ... *Quad-or-full screen display, good video, quality and high resolution*Demountable, network access, Remote access available*Manual/motion ... and remote opertation.*6 ch video input(4-channel CCTV video inputs, 2-channel video door phone inputs)*4 channel monitor or single on ...