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Customer reviews for Defender AI POWERED Sentinel 4K Ultra HD Wired 16 Channel PoE NVR Security System with 16 Metal Cameras 2TB HDD for
Defender AI POWERED Sentinel 4K Ultra HD Wired 16 Channel PoE NVR Security System with 16 Metal Cameras 2TB HDD
4.6 out of 5 stars
stars
94 ratings94 reviews
  1. 5 stars66% (62)
  2. 4 stars32% (30)
  3. 3 stars0% (0)
  4. 2 stars0% (0)
  5. 1 star2% (2)

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Showing 31-40 of 94 reviews
Jul 7, 2024
Reviewer name: Dodum
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

Overall

Clear video. Audio is subpar. The app closes down during playback. Would like to upgrade Defender product next time. Good value, however.

Review from defender-usa.com
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Oct 7, 2022
Reviewer name: RHP165
4 out of 5 stars
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?3KKSK3HSRNTF16749471827
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.

Sep 22, 2024
Reviewer name: Luziaf
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

Excellent security system

The cat5 cables that came with the equipment is garbage and is not connectorized for 568A or B standard.

Review from defender-usa.com
Helpful?3KKSK3HSRNTF16749471827
Dec 16, 2022
Reviewer name: WS Jessome
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Better cameras. No subscriptions.

These cameras are just what I was looking for. I had wifi cameras which expensive enough. Then you have to add monthly subscription charges. It seems like it was a ripoff, which I'm glad to get rid of.

Review from defender-usa.com
Helpful?3KKSK3HSRNTF16749471827
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

Jan 7, 2023
Reviewer name: MelL
4 out of 5 stars
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?3KKSK3HSRNTF16749471827
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 6, 2022
Reviewer name: Miguel
4 out of 5 stars
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?3KKSK3HSRNTF16749471827
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

Nov 25, 2024
Reviewer name: Ahmad
5 out of 5 stars
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?3KKSK3HSRNTF16749471827
May 26, 2025
Reviewer name: Anonymous
4 out of 5 stars
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?3KKSK3HSRNTF16749471827
Aug 15, 2025
Reviewer name: Carson M
5 out of 5 stars
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
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Jul 12, 2023
Reviewer name: ComputerTech
5 out of 5 stars
5 out of 5 stars review

Awesome quality product, awesome cusomter service

These are top notch quality camera's made out of metal. Purchased this 8 camera Sentinel Ultra HD series about 3 weeks ago and I am happy I upgraded. I had an older 8 camera 1080p setup from a different company and this one blows it away with the quality. People talking about quality issues have it setup wrong, or have other factors creating the issue. These camera's have infrared and led lights, which can be configured to be used or not. Coloured night vision is amazing and is best used with the led lights on the camera or other supplied light. You can configure it to be colour night vision with no infrared led or led lights turning on (daylight mode) but if you don't have enough light it will look dark and wont be able to see anything. People talking about false alerts are correct it will do that from time to time if not configured correctly. There are settings to configure the sensitivity of the dectection as well you are able to block certain area's suchs as tree's, bushes, or other things that move constantly with the wind blowing triggering the alerts. Once these area's are blocked they will not trigger the event and you will not get false alerts. No company has perfected this as you will see from many reviews of false alerts from any brand. However you can minimize it when its configured properly. I have mine set to record continously as well with motion this way you can get the full picture and also have a general idea when the event occured. The system is really easy to configure, but if you do have any problems contact support and they can guide you through to get it configured just how you like. If you are looking for a quality camera system, or even upgrading from an older system this is the one to get! One cord for each camera, easy setup plug and play, no extra power cords, no changing/charging batteries especially when its -30 lol

Review from defender-usa.com
Helpful?3KKSK3HSRNTF16749471827
reply from Defender

Hello, Thank you for your amazing review! We are thrilled to hear you love the Sentinel system, customization, and options! We are happy to hear you love the system and support! Our customer feedback is very important to us at Defender. Thank you for choosing Defender to protect what matters. Best Regards, Amanda M | Defender Customer Experience