This DVR8 2550 system I purchased with 8 cameras, of which I'm glad I did its always better to have more cameras then u think you need. For Example I have one that watches my front door from the left corner another 2 watching the sides and a 4th Watching most of my back yard. Unfortunately I have a lot of doors! (8) a real security hazard and some I need to eliminate. The other cameras I happily put inside.. why? Anyone can break your outside cameras.. Mine watch the most likely doors that can be breached (entered) and would also allow me time to react if someone did break in right? My system has a battery back up.. so even cutting power I'll still have those precious minutes to keep a record of activity. BTW the Cameras are ok.. not the greatest the 550's there are better so spend the extra money to get better resolution. This will become extremely important if you have to use it in a criminal/civil matter.. I also purchased the 751 Pan Tilt Zoom Camera but have not used it yet.
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