Very good security system. The camera's are setup to connect automatically to the nvr when you power them on. I had issues with the nvr not recording anything even though i had set cameras to normal and motion record but eventually got it working following the instruction video sent via email from Amazon. Video quality is great, very detailed images in day or night. The only thing that lets this system down is the short power cable that are provided for the camera's but this is easily resolved by using 12v1.5a external hdd power adapters. This is a very good wireless security system at a reasonable price range.