Eufy E340 Video doorbell mechanical chime

Hey folks,

I just bought a Eufy E340 doorbell, but just learned that my existing mechanical chime is not powerful enough to charge it, only outputs 6V.
Quite like the mechanical chime sound and really want to get the doorbell hard wired.
I dont have a separate transformer for the chime its all built in. Also dont want to install a separate transformer.

Now my question is, can anyone recommend a mechanical chime with a built in transformator that will charge my E340 doorbell?

Im in the UK.

Many thanks

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