Never fitted.
You will get everything what you can see on the pictures.
Nothing else included.
Power supply not included.
I find exactly the same system for sale on AliExpress for £253 which one is on the last two pictures. (I take screenshots from AliExpress website but I am if it's the same system)
✓✓ Last two pictures for illustration only. ✓✓
Looks like for this system you needed POE.
You can purpuchase from eBay. There re not expensive.
(POE not included)
Thanks 👍