Sikoimate Power Supply Adapter for Ring Video Doorbell, Ring Video Doorbell Pro and Ring Video Doorbell 2 Have you ever imagine that you can charge your Ring Doorbell with one tool? And you don’t need to buy another supply while you want to update your Ring to advanced version. Specification: Inner size: 5.8 x 4.6 cm Box size: 7 x 8 x 5 cm Input: 120V AC 60Hz 0.2A Output: 16V AC 800mA Cable length: 300 cm ( 118 inch) Compatible with: Ring Video Doorbell Ring Video Doorbell Pro Ring Video Doorbell 2 Zmodo Smart Greet Wi-Fi Video Doorbell Package includes 1 x Instruction 1 x Adapter 1 x 118 inch long cable (300 cm)