Used wired Ring video doorbell with Model Number 5AT3T5 and accompanying Ring Chime Pro (2nd gen) with Model Number 5UM2E5. Both work fine with no issues. Both are unpaired and ready to be set up with Amazon. The doorbell wire screws are included, along with one mounting screw, but I don't have the other mounting screw or the security screw for the cover, though those should be easy to replace.
eBay