as a promotional add-on when I bought a Ring Floodlight Cam at Costco. Below is an unboxing and first impressions video.
The Ring Chime Pro has all of the features of a Ring Chime, plus it works as a repeater for Ring devices (only). It can be used as a remote doorbell or movement alert for any of your Ring doorbells or cameras. It has multiple alert tones and can be customized using the Ring app.