High Res. 7" LCD Colour Video Phone Monitor with 2 way handfree duplex audio, Door lock open function. Door Open Status Indicator, Monitors CCTV input, Built in Auto selector switch for two door cameras. Soft Touch Buttons, Built in Memory to store 2 impages per call having total 100 images in 50 groups with Date / Time stamp and OSD menu control. Built in 13.5Vdc/1.5amp SMPS Power Supply. Surface Mount Dimensions - (W-220 x H-160 x D-40)mm. GLOSS WHITE finish.