Doorbell Transformer for Ring Video Doorbell, 16v 30va Hardwired Doorbell Chi...
Compatible with Ring video doorbell (2020 release, 3/4/plus, and pro 1/2), Nest, Eufy, Skybell, Arlo, etc. Continuously converts 110/120v to 16V AC at 30VA. 2 Yrs Warranty with professional service team.