The cameras are 4K 8 Megapixel UHD sensors that film in full color all day long. The Sentinel NVR Security System comes with everything you need to install the system including cables, cameras, mounting screws and the NVR box. I figure if the house does not have power, we have bigger problems, but it could be plugged into a UPS battery backup and power surge protector at a later time to keep the system working. I have the NVR box hardwired into our router, so it is always live and recording as long as the house has power. I unboxed the system and set it up using an old television as the monitor and hooked up the system to our home network. I had a qualified electrician install my wiring only because they had the tools to install the system so the wires were hidden and the system would be up and working in a single morning that said, this system is simple enough for the average DIYer. ![]() Defender offers an 8-camera system for under $700.00 if you need that many cameras. We chose the Sentinel system because the price of the entire 4 camera system was under $500.00. Why we chose the Defender Sentinel NVR Security System? One of the great qualities of the NVR Defender Empower cameras is that you can listen to the microphone on these cameras with a simple click on your phone or with the security system mouse, not many systems give you this advantage. A single cable provides 4K image quality, sound, and power so you never have to run multiple cables or worry about a nearby power outlet.In new homes builders are already installing ethernet cables in homes so having cables run to locations for cameras is easy to have done with a simple request. Defender’s Sentinel 4K NVR System allows you to view footage through the Empower App, so you can see and share what’s happening wherever you may be. ![]() The NVR PoE camera system processes all of the images at the camera and sends the recordings to the NVR box to be saved. The third option is NVR, which is the system we chose. The DVR processes all of the images and all of the cameras are analog. These cameras use coaxial cables with a BNC connector and a separate power source for each camera. What happens if you need your cameras while they are charging? As well, you have to use a ladder to get them down and reinstall them and while they are charging, they are not working. The problem with these cameras is that extreme cold and extreme heat will deplete the batteries more quickly. You install them and every other month you need to pull them down to charge them. Wireless, battery-operated cameras seem to be getting all the buzz these days. When looking at a security system you have basically three options out there on the market. I wanted the wires hidden and secured so it could not be taken down. Our home is just over 80 years old, so choosing the system upfront with a plan was important because we would have to install cameras on the brick. Defender sells this same Sentinel system with 8 cameras if you feel that you need more security camera coverage. ![]() I could have had more cameras, but it would have been overkill for our home. I knew that I wanted a wired home security system with at least four 4K Home Surveillance Cameras. Regarding a home security system, my research led me right to the Defender 4K Sentinel NVR Security System. It has also prevented me from buying items that just don’t fit for our needs. When choosing a wired security system, I spent a lot of time on research to find the best system for our needs. The clarity and options offered by the Defender Sentinel 4K Ultra Wired NVR Security System are more than enough for our home security and our needs. The options for home security systems seem to be endless, find out why I am happy we chose this system for our home. We chose the Sentinel 4K NVR Security System for our home security needs and after looking at all of the options, I knew we made the right choice.
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