ZOSI 16ch PoE NVR 4K 8MP IP Security Camera System, 4TB Audio 100ft $840.64 ($820.86 with eBay Plus) @ zosisecurity eBay

I found the below two reviews on YouTube that helped me make a decision.

https://youtu.be/YNIN8JaePNk
https://youtu.be/VtosvhZBM5o

Having said that, there's is not a great deal of reviews for this security system, but at this price I can't help but take a punt.

Brand - ZOSI
Model - 16HK-2258AW8-40s
Number of Channels - 16
Manufacturer Warranty - 1 Year
Storage Capacity - 4TB
Number of Cameras Included - 8
Colour Mode - Colour Day, B&W Night
Colour - White
Maximum Resolution - 3840 * 2160
Features - Add-On Camera, Automatic Motion Tracking, Digital, Night Vision, Wall Mounted, Waterproof, AI Human Detection, 2-way audio, Remote Access, Continuous 24/7 Recording, 4TB HDD, Person Vehicle Detection

Original Coupon Deal