August 2017: I purchased the Night Owl AHD7-841 720p system with 4 cameras/8 channels a few months ago. I just tried to purchase an additional 4 cameras but everyone is out of stock and no compatible camera is on the Night Owl web site.
One of my current cameras has already failed. No response from Night Owl regarding availability of cameras or warranty replacement after multiple emails and over a week. I believe they are only interested in initial sales for the revenues and have no intention of backing up their products. This was purchased at Best Buy and it has disappeared from their web site.
Best Buy told me to contact Night Owl. I highly recommend you avoid the Night Owl company and it's products.
Review about: Night Owl Ahd7-841 Security System.
Reason of review: Bad quality.
I didn't like: Customer service.