Ring Doorbell Voltage

How to select the right door bell transformer for ring pro & nest hello There is a wire going into the doorbell button that shows voltage. and Door wire doorbell two button chimes voltage wiring diagram bell transformer second going shows bells case using into there pushbutton

How to Select the Right Door Bell Transformer for Ring Pro & Nest Hello

Ring bell voltage transformer doorbell door mashtips panel pro

How to Select the Right Door Bell Transformer for Ring Pro & Nest Hello

There is a wire going into the doorbell button that shows voltage. And