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.

Recently purchased this system, its it is very good for the price, image quality is just enough for surveillance of your home. Defender maybe though can look into offering some compatible LPR technology in the near future to be able to see/ provide lisence plates to authorities during a hit and run or something.. thank you guys!!

Cameras are good, but your Android app needs work, cannot view 1x7 mode and my app keeps timing out and I have to keep reconnecting about every 10 min. As well, there is no more windows support for viewing the live feed, bad move, this was a great way to view my cameras remotely for those of us that don't have a tablet. Also used to be able to save the playback videos directly on my PC, now I have to access the dvr directly, which is not so easy as it is in a locked cabinet in my basement.

Owning a 1080 - 8 camera system, I wanted to buy the 4K - 16 camera system, and reuse 8 of the 1080 cameras along with 8 - 4K cameras. The help desk was absolutely unable to figure out how to do that, so I drew up a schematic diagram for them to have their engineering section look at; which they eventually approved. BTW, it works very well. I used the 1080 power supplies with the built-in ferrite beads on the 1K cameras and the original cabling without ferrite beads for the 1K side.

Picture quality is quite good for the price, was surprised. Only thing I don’t like so far is that I had to mount a camera sideways to get a taller narrower picture to cover my whole driveway. The image on the app or display monitor is sideways and can’t be rotated.

I purchased the new 4K HD 1TB 4 camera system as my other HD unit only included (2). Overall the display is "super crisp". That is a plus, however my older system allowed me to see a greater area of coverage. I expected a wider viewing range as it advertises and it being 4K, but honestly it really gives you a lot less viewing area. Picture width horizontally in comparison to the HD unit is actually the about the same, but vertically (top to bottom) it cuts off "a lot". In the most important area of my home facing the road and my front porch I am now having to use (2) cameras to see what I could see previously with just the (1) camera. I have adjusted every camera detail withing the easy to use unit, and I cannot get a better coverage image. Overall, the clarity is amazing with true 4K live display up to 15fps. On the upside, I can now read license plates on parked cars, I can see extreme details of objects I couldn't see before at the cost of previous coverage area. I don't know if this is supposed to be the give and take of greater quality picture, but I could see plenty enough detail before of people, objects, etc, before this upgrade. The system is not all bad, the connection to the internet was simple. Within minutes I was able to stream live view right on my android phone. Which actually helped me with the installation because I could use my phone to position the cameras. Kept me from going up and down a ladder a hundred times to get an optimal view. I really hope this review helps others when considering to make this purchase.

Hardware is good. Support and guides are lacking. Got it working to my phone no problem, but want it on tablet and wife's phone. Says you can set up sharing but no instructions on how to achieve it. Can it actually do it? Where is the instructions to do it.

I bought this system to replace an older different system that stopped working, so i didn't have to run wires this time. All the wire connections were the same from the older system to the new Defender system. I am very impressed with how easy the setup was, even setting up the app on my phone was very easy and stupid proof. The last system I was only able to live view from my phone but this system I can rewind to see what happened the other day. Hands down this is a well worth system. "Love It"

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.

It is great picture quality but it takes a lot to set this up correctly. The interface looks like it was made in the 1990’s, but gets the job done with a lot of clicking around. Cameras are light and easy to place. Night vision is super clear as well. I think after I mess around with the settings I’ll feel better about it all. Same goes for the iOS app - lots of clicking around. They are trying to update it currently.