TheWaterbug
Getting comfortable
Googling "YAHPB-X38" leads me to the FCC's listing of submissions by Venture Global Limited. That first number is, of course, that remote button, but the appearance in their External Photos is very different from what's on Safeguard's website, which suggests that they sell this module to other resellers as well:
That's a good thing, as it raises the possibility that they could have sold the same internals to Reolink. My Reolink chime has one screw, but it didn't open easily, and I didn't want to pry and break my only working chime.
Another submission by Venture Global (YAHMA-600) is the remote chime unit that I just ordered from Safeguard/1800Doorbells: