Lorex TD81818A6-F 4k 8 Cannel Security System w 6 Cameras

I bought this brand new at Costco on sale of $399. Never opened the box, can't take it back. https://www.lorex.ca/products/4k-ultra-hd-8-channel-security-system-with-6-active-deterrence-4k-8mp-cameras-3?_pos=1&_sid=12f0bbae2&_ss=r