I wired up a nest hello doorbell to my existing chime. It rings fine but lacks enough power to operate properly. That’s ok, it was a little expected.
Unfortunately, changing the old transformer is not an option due to its placement and some external factors.
Per hello instructions, I have bought a plug in transformer. This allows the hello to work without the chime.
What I would like to be able to do is power the hello with the plug in transformer and have the chime ring at the same time. Is this possible to achieve safely?