Closed Circuit TV Camera is becoming a main part of home automation. These are used for producing images and recordings for surveillance purpose. Using IP addressed cctv cameras, complete building and happenings around it can be viewed from any part of the world in real time. These cameras place very important role in home automation.
A DVR is a Digital Video Recorder. It’s like a VCR, but instead of using a tape it records and plays back video digitally. It works like your computer, with a hard drive that stores the information. It is a security system device that records the video from up to 16 surveillance cameras on a hard disk. The frame rate can be switched from real time to time lapse in order to save disk space. Digital recorders are more flexible than earlier analog VHS tape systems, and the video can be easily transmitted over a computer network.