Experience the gold standard in home security with the AI Sentinel 4K NVR Security System. This state-of-the-art home security system integrates seamlessly into your home, providing round-the-clock 4K quality surveillance with a simple DIY Setup. The next generation of SMART AI-Powered human detection uses an intelligent detection algorithm with instant mobile notifications. Advanced deterrence features include blue-red light, and a powerful LED spotlight. Enjoy sharp audio recording, and vibrant color night vision on your durable, metal weatherproof security cameras. No monthly fees required with the top-rated Empower Mobile app. ONLY compatible with Defender Empower app. Can not be used with other Defender apps.
Q: Can I view the security footage remotely?
A: Yes, you can view the security footage remotely using the mobile app or web interface.
Q: What is the night vision range of this security system?
A: The security system has a night vision range of up to 100 feet.
Q: What is the resolution of the cameras in this system?
A: The cameras in this security system have a resolution of 4K Ultra HD (3840 x 2160).
Q: How many cameras are included with this security system?
A: This security system includes 16 cameras.
Q: What type of storage does this security system use?
A: This security system uses a Network Video Recorder (NVR) for storage.
Q: Does this security system require monthly fees?
A: No, this security system does not require any monthly fees.
Q: Does the security system have audio recording?
A: Yes, the system has a highly sensitive microphone to capture audio.
Q: Do they cameras only record at motion or are they continuously recording?
A: Hi Soupskid, thank you for your inquiry. The AI-Powered Sentinel Security System offers flexible recording options. You can choose to record continuously, only when motion is detected, or according to a custom schedule whichever best suits your needs. If there's anything else we can help you with, please don't hesitate to reach out! Best regards, Precious | Defender Customer Experience Expert

Experience the gold standard in home security with the AI Sentinel 4K NVR Security System. This state-of-the-art home security system integrates seamlessly into your home, providing round-the-clock 4K quality surveillance with a simple DIY Setup. The next generation of SMART AI-Powered human detection uses an intelligent detection algorithm with instant mobile notifications. Advanced deterrence features include blue-red light, and a powerful LED spotlight. Enjoy sharp audio recording, and vibrant color night vision on your durable, metal weatherproof security cameras. No monthly fees required with the top-rated Empower Mobile app. ONLY compatible with Defender Empower app. Can not be used with other Defender apps.

Experience the gold standard in home security with the AI Sentinel 4K NVR Security System. This state-of-the-art home security system integrates seamlessly into your home, providing round-the-clock 4K quality surveillance with a simple DIY Setup. The next generation of SMART AI-Powered human detection uses an intelligent detection algorithm with instant mobile notifications. Advanced deterrence features include blue-red light, and a powerful LED spotlight. Enjoy sharp audio recording, and vibrant color night vision on your durable, metal weatherproof security cameras. No monthly fees required with the top-rated Empower Mobile app. ONLY compatible with Defender Empower app. Can not be used with other Defender apps.

Experience the gold standard in home security with the AI Sentinel 4K NVR Security System. This state-of-the-art home security system integrates seamlessly into your home, providing round-the-clock 4K quality surveillance with a simple DIY Setup. The next generation of SMART AI-Powered human detection uses an intelligent detection algorithm with instant mobile notifications. Advanced deterrence features include blue-red light, and a powerful LED spotlight. Enjoy sharp audio recording, and vibrant color night vision on your durable, metal weatherproof security cameras. No monthly fees required with the top-rated Empower Mobile app. ONLY compatible with Defender Empower app. Can not be used with other Defender apps.

When life gets hard, make your security easy. Introducing our new 4K 2-Way Audio NVR Security System. With secure app-based Bluetooth setup, there is no need to connect a TV or monitor for setup or viewing (optional). Easily set up the system right from the convenience of your mobile device. Your 4K wired IP cameras have full-color day viewing and full-color night vision up to 100 ft., which provides colorful recordings that capture every detail. With a bright built-in spotlight, you can light up the dark and ward off unwanted guests. For situations where seeing is not enough, easily make your voice heard. With 2-way audio you can listen and talk with anyone who approaches, making your presence known. Still not enough? Use our preset voice alerts and booming camera siren to shout a warning when a suspicious stranger nears. You will receive key alerts to your mobile device for important matters, such as people and vehicles as they arrive and depart. All recordings and personal data are privately stored on the recorder’s hard drive for secure access with zero costs. Your privacy matters and your recordings and for your eyes only. Built for outdoor use, your cameras can handle anything mother nature throws their way, from extreme heat and cold, to rain or sleet. Use them indoors or outdoors to cover what you want, when you want. Need more coverage? Easily add our compatible wired, Wi-Fi IP and doorbell cameras to your recorder to boost your viewing area. This system is a one-time purchase and there are no hidden costs. Use our free mobile app for iOS and Android Smart Devices to stay connected and easily access your recordings with no fees.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
WHEN LIGHTNING STRIKES!!! We had thoroughly enjoyed our Defender 4K Sentinel Security Camera system until 5/2/25 when lightning struck VERY close to our home. It took out two garage door openers, our internet radios, LED TV, lights, phones…and our beloved NVR box that runs our Defender system. ☹ We had enjoyed being able to keep an eye on my mother (2.5 years down the Dementia road and now in Heaven) in case she wandered off and the ability to keep an eye on everything around our home and listen if necessary. See my initial review on Amazon back in 2023. GREAT Customer Service! Amanda M leads a great team of CS agents. Much can be resolved by chat, but if you want to talk live to an agent that can also be scheduled. As some things get technical, I prefer the live conversation option. When I contacted them regarding a camera malfunction on my initial purchased system, even with being out of warranty, they only charged me $15 + shipping to replace the camera. Basically, they provided great service after the sale and after the warranty period. From this experience, I knew I could count on them to have my back. When I communicated re the lightning strike, they went ABOVE and BEYOND my expectations to help me upgrade and replace my old fried system. I went with the 16 camera system and 12 TB storage so I can add one more camera (9 in total) plus have a TON of extra memory to hold probably a couple of months worth of recordings. Three of my neighbors and relatives keep their properties secure and monitored with DEFENDER systems. I stand by my review in 2023 on Amazon and would encourage anyone to seriously consider choosing the Defender family. BONUS: Field of View has INCREASED a LOT from 75 degrees to 125 degrees!
Posted by AnalyticalShopper