Install Nest Doorbell battery wiring with chime (Spain)

[CasaMar]

I can't find an electrical diagram to install Nest Doorbell battery wiring with my existing chime.
Google does not provide me with any help with this specific model, it only has electrical diagrams for the Nest Hello version that has a specific connector.
The installation is in Spain and no electrician dares to install without an electrical diagram of the product.
Thank you very much for all the help.

[MplsCustomer]

@CasaMar 

The Google Nest battery doorbell does not use a chime connector or chime puck. It is simply wired to the existing two doorbell wires used with your old conventional doorbell. So Google Nest does not provide a wiring diagram, just these instructions:

"Remove your old doorbell and disconnect the wires....

Connect the power wires to the wire connectors. It doesn’t matter which connector you attach a wire to."

https://support.google.com/googlenest/answer/10732535?hl=en&sjid=4299744768316057627-NC#zippy=%2Cwir...

Google Nest also has this doorbell compatibility Help topic:

https://support.google.com/googlenest/answer/9247132

[CasaMar]

Thanks for the indication @MplsCustomer 

Existing chime is compatible.

I only need to install a 16 to 24 VAC, or 10 to 40 VA, transformer to provide enough power to the doorbell. And this is where I have a doubt about the electrical circuit.
And also which transformer to buy for an electrical installation in Spain.
Thank you so much

[EmersonB]

Hello everyone,

@CasaMar, thanks for reaching out here in the Community. It's good to know that it's compatible. For the transformer, we would recommend you to contact an electrician to check if your existing transformer needs an upgrade. 

I appreciate the response, MplsCustomer.

Regards,

Emerson