Install your Video Doorbell Pro without worrying about existing doorbell wires at home. Simply connect the Plug-In Transformer to your Video Doorbell Pro, plug it into a standard power outlet in your home and get nonstop power for your Ring. Includes a 20-foot cable with clips Built-in short-circuit protection Connects to standard power outlets Only works with Video Doorbell Pro Protection and Warranty: Purchases are protected by a 1-year manufacturer’s warranty on parts. If your Ring product ever gets stolen, Ring’s Lifetime Purchase Protection will replace it for free! Please contact Ring directly for support and warranty needs. Website: https://support.ring.com/hc/en-us Email: help@ring.com Phone: 800-656-1918