Ring Doorbell Series: 2020 Release, Video Doorbell 3/4/Plus, Video Doorbell Pro/Pro2. Wide Compatiblity - 24v universal US power cable powers popular smart doorbells. Compatible with Ring video doorbell (2020 release, 3/4/plus, and pro 1/2), Nest, Eufy, Skybell, Arlo, etc.
eBay