The Pro Power Kit included with your Video Doorbell Pro is a small device that makes sure that enough power is sent to your Ring Doorbell to function.
Ring Video Doorbell Pro requires the Pro Power Kit to function, so be sure to install the Pro Power Kit before installing your Ring Doorbell.
How to install the Pro Power Kit V3:
1. Turn off the circuit breaker for your internal doorbell.
2. Remove the cover from your internal doorbell.
3. Loosen the "Front" and "Trans" terminal screws on your internal doorbell.
4. Connect one wire from the Pro Power Kit to the Front terminal, and the other wire to the Transformer terminal, leaving the existing doorbell wires in place. Then, re-tighten the screws. It doesn't matter which Pro Power Kit wire goes to each terminal.
5. Position the Pro Power Kit within your internal doorbell, away from any moving parts. Use the adhesive on the back of the Pro Power Kit to fix it in place, if desired.
6. Replace the cover on your internal doorbell.