4.0" color video door phone, pinhole CCD camera, video door phone villa kit. 4.0" color video door phone, pinhole CCD camera, video door phone villa ... of the CX and NCX outdoor unitHousingABS materialScreen3.5"/4.0" TFT LCDAdjustmentsvolume,brightness,contrast,saturationInstallation methodsurface mountingSpecifications ... modeFinal products,SKD/CKD, OEM/ODM available 4.0" color video door phone