The DPH1003 will allow you to see and hear who is at you door before you open it. The camera will give you a great picture in all lighting conditions with 6 white light LED's. The system needs only 4 conductor cable for operation and two way audio conversation. The sleek TFT monitor can be easily installed in your office or home without being obtrusive. You can even trigger an electric door lock to release from the video monitor. This system includes the monitor, camera, mounting hardware and power supply.