... BTS-ZC9) Outdoor Phone of Color Video Intercom is with high quality and reasonable price. Similar Products:Color Intercom System, Color Video Intercom, Intercom, ... Intercom System, Building Video Intercom, Video Intercom for Apartment and Building, Digital Security Intercom Features:1.Special design for ... be adjusted up and down, IR or bright LED night view. 3.First one to use color back-night operation ...