Installation question: I have power at the doorbell, but I have no inside chime

Not sure how to handle this, the previous owner of my home installed a different doorbell and chime, which were battery powered and did not run off the installed electrical wires. The wires for the doorbell are accessible, but the wires for the inside chime have been spackled over and hidden somewhere inside the inside wall. I just purchased a new Ring Pro 2, can I just connect it to the existing wires at the front door without attaching the Pro Power Kit to a chime I don't have? Any help appreciated.