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Customer reviews for Defender Sentinel 4K UHD Cameras with 1TB NVR Security System, 4pk. for
Defender Sentinel 4K UHD Cameras with 1TB NVR Security System, 4pk.
4.6 out of 5 stars
stars101 ratings94 reviews
  1. 5 stars66% (67)
  2. 4 stars31% (31)
  3. 3 stars0% (0)
  4. 2 stars1% (1)
  5. 1 star2% (2)

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Showing 21-30 of 94 reviews
Nov 6, 2022
Miguel
4 out of 5 stars review

Verified Purchase

Nice system

The camera install was the hardest part for me. So far the system works great. I like all the features it has and have just started to connect it to the internet.

Review from defender-usa.com
Helpful?1TNIX4D398WZ13966857283
reply from Defender

Hello Miguel, Thank you for your review. We are happy to hear the system is working great and you like the features. Thank you for choosing Defender to protect what matters most. Best Regards, Amanda M | Defender Customer Experience Expert

Feb 27, 2024
The Don
4 out of 5 stars review

Verified Purchase

installed at lake house

Enjoying the customisations available. Much to learn. Fairly user friendly with a bit of exploration. Human detection feature is a bit of a challenge yet.

Review from defender-usa.com
Helpful?1TNIX4D398WZ13966857283
Jan 20, 2025
Denis S
4 out of 5 stars review

Verified Purchase

Sentinel 4K

Purchase 1 month ago, works as required. Quality very good. Easy to set up. Downside, I cannot add a software like I did with my Swann system to view my cameras on my home laptop : (

Review from defender-usa.com
Helpful?1TNIX4D398WZ13966857283
May 26, 2025
Anonymous
4 out of 5 stars review

Verified Purchase

Great system, quality video

Super easy to install, and love the crisp picture. Only quip I had is that 60’ runs are tight when going to opposite ends of the house, 80’ cable runs would have been much better as I had to extend 2 of my camera runs.

Review from defender-usa.com
Helpful?1TNIX4D398WZ13966857283
Sep 25, 2024
JDG1
4 out of 5 stars review

Verified Purchase

Good value quality cameras but Settings limited.

Good quality camera, easy to install. Design needs more flexibility to position anywhere and see image upright. Also gets a lot of false positive “human detection” even though we turned sensitivity to Low.

Review from defender-usa.com
Helpful?1TNIX4D398WZ13966857283
Jan 7, 2023
MelL
4 out of 5 stars review

Verified Purchase

Good, will update w/ further exploration

Amazing picture quality though no imagery at night. Playback feature could be better continues to freeze and lag on the fastest internet connection possible.I would prefer more ease of setup and description of features.

Review from defender-usa.com
Helpful?1TNIX4D398WZ13966857283
reply from Defender

Hello Anonymous! Thank you for taking the time to review the 4K Sentinel security system. We are so glad to hear you are happy with the system. Our customer feedback is what matters most to us here at Defender! We would greatly appreciate you speaking with your friends and family about your experience with Defender and your 4K Sentinel. Thank you for choosing Defender to protect what matters most. Amanda M. | Defender Customer Experience Expert

Nov 25, 2024
Ahmad
5 out of 5 stars review

Verified Purchase

Great support

This is a great company I like their cameras and their new app, Also thanks to Tristan he always follows up with my purchases and resolves any issues very quickly

Review from defender-usa.com
Helpful?1TNIX4D398WZ13966857283
Aug 7, 2025
Michael S
5 out of 5 stars review

Great Security System!

This is an incredible system. The image quality is great, set up was simple and its working extremely well for us! The system comes complete with everything needed and all looks to be very high quality product. We are thrilled with this system!

Review from defender-usa.com
Helpful?1TNIX4D398WZ13966857283
Aug 15, 2025
Carson M
5 out of 5 stars review

Great quality 4k camera system

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.

Review from defender-usa.com
Helpful?1TNIX4D398WZ13966857283
Oct 7, 2022
RHP165
4 out of 5 stars review

Verified Purchase

Dependable system

This product is an improvement over my first defender system. Easy to install, and easy to view on my smart phone.

Review from defender-usa.com
Helpful?1TNIX4D398WZ13966857283
reply from Defender

Hello, Thank you for your review. We are happy to hear you are enjoying your new system, and all the improvements it offers. Thank you for being a loyal Defender customer. Best Regards, Amanda M | Defender Customer Experience Expert.