So after a little digging, these appears to be the manuals:
https://manuals.harborfreight.com/manuals/57000-57999/57648-193175419316.pdf
https://manuals.harborfreight.com/manuals/57000-57999/57647-193175419309.pdf
If I had to guess, it probably is using normal 802.3af PoE and other cameras are...