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If your company or organization is looking for a low cost solution to monitor your CCTV pictures, the Flash Memory Home Security DVR could be put into consideration. This digital video recorder does not use hard drives to store its data, instead, it utilizes regular SD cards to record color images as well as video clips as and when the need arises. The Flash Memory Home Security DVR comes with a motion detector that has an adjustable sensitivity, enabling it to monitor changes in movement and recording only things of interest to conserve memory. Once the SD card is full, you can transfer them onto any other media like a hard drive of CD-ROM. The Flash Memory Home Security DVR comes with a single composite video input that is connected via a phono connector, and it will accept any standard PAL I signal. In case the SD card runs out of memory while recording, the Flash Memory Home Security DVR comes with 16MB of internal memory, which isn't much by any case but sufficient for a couple more minutes of crucial footage. It is available now for £39.99.

Pros : Affordable monitoring solution, SD cards are cheap
Cons : SD memory card format has low capacity compared to hard drives

Flash Memory Home Security DVR Source