I would like to make two points 1 I was dismayed when my chime didn’t work, after triple checking the wiring I decided to remove the transformer to check the rating, as it was in a position where you couldn’t see the tag without removing it. Well imagine my embarrassment when I see 10v 5va, worked perfectly with a new 16v 10ma. 2 IMO the purpose of the chime module is to reduce the current flow through the Wyze doorbell. It basically works as a relay to protect the doorbell from excessive current flow. Smart.