Handsfree 2-Wire Color Intercom
By SVAT Electronics

The VISS7500 Video Door Phone let you see who is at the door before you open it and you can even communicate with them without having to open the door at all. This unit provides an extra measure of security and convenience with its two wire connection and electronic door opening button. The monitor is wall mountable for convenience and versatility. ... 

Clover B&W Video Door Phone System
By Clover Electronics USA

Video Door Phone - Dimensions: 8.5" Height x 8.38" Width x 2.75" Depth - Monitor - 3.5" Height x 5.5" Width x 2" Depth - Camera - Display Screen: 4" Black & White CRT 380 TV Line - Product Model: VDP-1300 - Illumination: 0.1lux - Usable, minimum, Built-in 6 infrared LEDs - Screen Size: 4" ... 

Clover Color Mon Video Doorphn System
By Clover Electronics USA

Video Door Phone - Display Screen: 4" Color LCD 480 TV Line - Lens Type: 3.6mm - Product Model: VDP-1500 - Illumination: 0.1lux - Usable, minimum, 6 built-in infrared LEDs - Screen Size: 4" - Display Type: Color LCD - - ...