just out of warr. and it quit, we contacted support and they said we should buy a new one. what a joke, find something else with better customer support

I bought this dvr in january, Hard drive failed. They don't want to ship replacement, without charge for new DVR , or first send the old dvr back to them .

So far we are very impressed with the 4K Ultra HD security system! We have only gotten around to installing one of the cameras since figuring out the wiring to and from the camera can be a bit of work. But 2 days after installing, we were able to capture a man breaking into one of our cars parked outside. We are extremely grateful that we had that camera running because its providing very useful evidence for the police. Make sure to avoid any obstructions in the path of the camera to maximize the night vision capabilities! We originally had a bit of roof line in the shot which caused a lot of glare. Once we tilted the camera down the quality improved A LOT! Day time quality is 10/10! It was also very helpful to watch the set up video on the Defender Youtube page! Also, Defender 24-7 app is working very well for us on our iPhones! No crashes or lag. The Motion Sensor alerts are very helpful as they record about 2minutes every time they are triggered which makes it very easy to save video/photos without having to playback and scroll through the footage.

I love the new 4k system I just purchased. The digital zoom is wonderful and the picture is crystal clear. The adjustment on the cameras are not what I was hoping they would be, but with a little time I was able to point all the cameras where i needed them.

Great quality with easy to understand startup instruction guide. Everything was in the kit to get the system up and going. This system is self contained where the video data is stored safety on your local high capacity DVR with no monthly fees that never end. The system is highly customizable to fit your unique needs.

Came faster than expected. Unit seems solid and easy to setup. Have not yet been able to do a complete install of all cameras but what I have been able to get completed they are working well and great image. A good deal of settings to work through to tweak them as you wish. I have mine connected to my 55 inch tv in our living room and used a wireless mouse instead of the wired one sent. Works great! Choose the wired cameras as I have the space to hard wire them without the wires being exposed. This gave me the 2T hard drive as well as power and a better image so shouldn't have any issues with overwriting something that I may have wanted to keep. Still playing with the system but like it so far.

Great product with awesome Monday through Friday support! The live chat has always solved any problem and questions about modifications to the system. I enjoy the push notifications for alerts as to something going on. Great system! Incredible price! Excellent customer service!

Let me start by saying I was very nervous about purchasing this system. I'm NOT computer savoy and neither is my husband! We purchased the 16 camera 4K system to replace an older system we had for our business. Let me say, watching the You Tube videos a bunch of times made the process very easy! The set up was pretty simple, but I suggest watching the video's for me at least it helped tremendously! We just replaced the camera's we had so we had all the wiring in place, so that cut a lot of time off the installation. I would recommend buying this system!

Just an OK review because the cameras are just OK. No left/right movement & narrow field of view. & no option to upgrade cameras. User interface is VERY confusing to me. I'm not computer illiterate, but the interface is confusing. However, set up instructions were good. Never got email notification to work. Images are pretty good. cables are good. Box & wires are a mess. That's not a knock on this brand, but in wired systems.

Excellent customer service. Received order within 48 hours of ordering. Great system, easy setup picture is fantastic, only viewing a 1080p monitor so missing out on detail. 3rd system from defender all wired started with the old 720 worked fine for 10 years then up grade to the 2k. New house new system. Never any issues with old systems and expect many years from this system Cameras are more compact with a more solid body than any of the older system owned. Would purchase again.