My overall impression of the 8 Channel 4K Sentinel NVR is very good. The system came well packaged with each camera packaged in it's own box. It was a breeze to setup with the cameras truly being plug and play. The NVR and accompanying app were configured within 10 minutes of unboxing. By far the most difficulty is running your cables to your camera locations. Take your time and plan where you'd like your cameras and the routes you have access to for the cable runs! The image quality of the cameras is fantastic and far surpasses the wireless cameras I used previously. The accompanying app is intuitive and easy to use. I was surprised at how little bandwidth this system uses. There are many options which can be configured around motion detection, notifications and schedules. Setting up and using this system has been a great experience and has provided a lot of value in a nice DIY package.

I bought this camera system about 3 months ago and it has worked flawlessly since the beginning. It was very easy to install and the support is very responsive if you have any trouble. I own two defender camera systems and they both have been great. I would recommend them without hesitation.

My husband and I purchased the 16 POE camera set and have been enjoying the many options. The ease of installation was the first thing we noticed. I especially like the following: audio recording, footage in vivid color, white spot light, sharing the NVR, and the ability to view the detection page or my notifications prior to viewing playback. I am an old defender customer. When I listed my house to sell that was one of the features asked if it was staying. This is my second set since selling my previous house. The 4K color is great (clear and vivid). My preference is the wired set. I would definitely recommend this product to others.

This is my second set of defender cameras. My first set I got over 10 years ago and I was really pleased with them so I decided to upgrade and get the newest version. This 4K system is absolutely amazing. The quality of the photos, the video, and my favorite part of it all is the motion sensors that I get alerts for directly to my phone. I strongly recommend anyone in the market for a great security camera system defender is the one.

We had 2, 16 camera systems installed in our business. They replaced our older system. The installation of the cameras was quite simple and the set up took little time. From a security perspective, we are pleased with the high quality of the video/feed and in reviewing past recordings, we found it easy to go back and find specific dates for review. Over the years we have had three systems and following our research, we are certainly pleased with the Sentinel Defender camera systems.

this is my second Defender system, the first being the 2k wireless. the difference between these two so far is night and day. a little more work to set up but worth it. down the road i'll be replacing the 2k system with another of these 4k nvr systems. hoping to have a video review up on youtube soon

Giving it 4 stars because it is a good system with nice quality cameras but: 1. It came with a faulty Cat5e cable, it has power but no connection is detected. 2. The human body alarm is faulty when camera is set on an angle, I have one installed at my porch area and it keeps thinking the tree or even my front door mat is a human body.. 3. The night vision light can be a bit annoying sometimes, I don't think I've found a promising solution to have it turned off completely or not that sensitive.

We bought this system to replace an older wireless defender system. The cameras are great and so much clearer and the night vision is so easy to see everything. I also like that the color comes on when the lights are activated. Playback is very easy to use. Set up was very easy. I highly recommend this system.

Replaced my old nightowl bnc system with this one. Great upgrade. Picture quality is a whole lot nicer. The app to see what is going on at home while your gone is great as well. System looks well made. Cameras have some weight to them and feel like good quality. Forewarning the nvr was set to human detection at first start up and does beep if there is anyone outside in the camera field of view. Kinda scared the bajesus out of us.

The video quality on this system is outstanding. The NVR records without fail. Easy setup. Highly customizable settings if interested. The App also works great and playback is not an issue. My only negative comment is that I get many false motion readings, but it does capture all the real ones too so you are not missing anything. If you want a DIY standalone system that does not require a contract you really can not beat this system. This being a Canadian company was also a selling feature for me too.