Fantastic security system for monitoring our manufacturing facility. Installation was easy and the cameras have a simple, yet robust UI. Would recommend to anyone looking for a simple yet effective security system.

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.

The Defender Alarm System is AWESOME!!! The cameras now clearly monitor our hallways. We previously had major issues with students running up & down our hallways. The cameras recorded very clear & distinct photos that were given to the local high school. Problem solved!! The pictures on the monitor alert our staff when there is activity in the office. We love our system and Our staff are feeling very secure & safe. Patient & staff safety are Our #1 concern. ‘Wish We had installed The Defender System before. It's very user friendly & We can observe any movement from across the room. Recently the hydro was out (4hrs) the emergency lighting allowed Our office to carry on as usual. Less stress, NO more worries! Thank YOU Defenders!

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

I purchased a couple months back and I got to tell you it's a great product. It's relatively user friendly. The only downside is customer service which I understand and respect and hopefully that will change the staff is good at getting back to you ASAP when confronted with an issue..

The daytime images are crystal clear and detailed. The night vision is very good close to the house but a bit blurry farther away. That's the same as most other systems. The motion detectors are very sensitive. We had a good laugh because the alarm would go off for our backyard saying a human was detected. It ended up being our smoker with the cover flapping in the wind. After moving it a little, everything was fine. The app works well and you can handle most of the NVR functionality from it. The only thing we miss is 2-way sound cameras. We would have used those in place of the 2 pointing at our doors. We would recommend this system to anyone wanting good day & night coverage for your home or business.

This is a great security camera with great features. The hardware is pretty good and easy to connect. The setting up the devices app is very smooth. The instructions are pretty accurate. The features of camera like setting up the color of the video recording and images is outstanding. Motion detection and night vision which are the main best features of the security camera is excellent. The only downside of this, is that this is wired camera therefore installing this by yourself is not that easy. If you want to run the wires clean in the house you have to do it in the ceiling along with electrical wirings and it may require professionals. For DIYers can still be done with a careful consideration of the aesthetic of the house. Other than that this security camera is perfect for the price and its features.

I purchased this system to upgrade my old camera system. The picture quality is top notch during day or night vision. The audio was also an upgrade as my old system did not have any audio capability. The app is also very powerful and quick. The ability to see, monitor and make changes from my phone is very convenient. I love this system and would recommend this and purchase this again.

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.

The video quality on this system is great and setup is a breeze. Motion detection is somewhat hit-and-miss so as part of a security system you would still want more precise intrusion sensors, however, this works great to provide recordings of past/event activity for future reference.