Features:

1.Special design for high-rise, small high-rise and multi-rise building, etc.
2.CCD can be adjusted up and down, IR or bright LED night view. 
3.First one to use color back-night operation indication.            
4.Convenient night use with keyboard lamp
5.Video outdoor phone CCD, with automatic IR for night view.
6.Unlocking with password. 
7.Adopting soft-coded way, escaping from the building structure.
8.Calling management center and talk, remotely unlock by management machine.
9.External dimension: 316*130mm.
10.Installation dimension: 302*116*42mm.