CDV70AD - 7 Inch Colour Handfree Video System CDV70AD 7 Inch Fine View Colour Handfree Monitor DRC40CS   Aluminium Surface Mt           DRC4CA   Heavy Duty Aluminium Flush Mt   - Screen: 7" Colour TFT LCD   - Wires: 4 Wires   - Power: 18V DC Regulated   - Diemension: 243 x 168 x 35(mm)   - Upto 2 Cameras + 2 Monitors + 2 Audio Handsets more information (brochure)