with Ring Video Doorbell Pro Released in 2016 ONLY -LRB- Ring 's Part Numbers : 88LP000CH000/RINGPRO -RRB- Homono Video Doorbell Power Supplies make installation of video doorbells excitable and loose for anyone. All Power Supplies have been thoroughly for safety, high feature operation of the video doorbell and ease of installation. To maintain the warranty, solely install the Power Supply planned for the Above models. Homono is not by or affiliated with Ring or its parent company. Video Doorbell not enclosed with purchase.