Bought this system for my garage area and Alley.  I had the last model for my house and was pretty happy with it, great picture, good value, nice iphone app.   This new model has all the things I liked about the last model, but upgraded software on the NVR box.  Its easier to setup, the interface looks sleeker, and setup process was faster.  Most of the time I check the alerts and views on my iphone app, and it can show you all the motion alerts with a nice little link that takes you to the right spot in your recording, from there you can watch, skip back or forward to get more context. I like the look of the cameras, they feel pretty sturdy, and you can set them up to have a security light type response, or go more stealth with just the infrared option.  Setting that up took a bit of poking around in the menu, but now that its setup, I have it setup differently per camera, which is nice.  I like that I can add up to 4 additional cameras if I need later, 4 was enough for my needs now though. I also really like the POE format, power of ethernet, which means one cable sends power and picture/sound signals, no need for extra wires, and you can use most any cat5 type ethernet cable (this comes in handy if you need to setup outlet plates and a few dis-connectable wires).  Another bonus to having this wired system is its harder for thieves to use wireless camera disrupters to block signals. II was already able to get footage right off my phone for a neighbor when someone broke into their adjacent property to send to the police.

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!

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..

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.

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.

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.

The Sentinel system is exactly what I have been looking for! We loved the easy set up with 1 cable for footage and power! We didn't have to worry about power adapters or power bars. The great 4k resolution with motion detection is awesome! I have 1 camera in the backyard to check what critters that may be running by after the winter thaw!

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.

Excellent Security Camera System to protect your home. I have been a long time Defender systems user and love them. These model specifically has wide angle cameras and great night vision capabilities. the sensors work great and picks up movements immediately. If you are using for inside the home, i would recommend to turn off the lights for night vision. Access from app works nice and very quick/easy to setup. Audio feed, although works only from one camera at a time, is a good feature to have.

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.