... Stainless steel shell. 2.Definition: 420 TV lines. 3.Camera: 1/3 CCD/ (BTS-QZC-GD) Color Video ... , Video Intercom/doorbell/entry, Video Door Intercom, Villa Type Video Intercom System, Intercom Systems, Building Intercom, Building ... Stainless steel shell.2.Definition: 420 TV lines. 3.Camera: 1/3 CCD/CMOS, Day/Night.4.Light source ... *128mm.6.Installation dimension: 195*115*32mm (flush-mount installation).