Chime doorbell wiring

[NeddyB]

Hello,

I have recently moved house and trying to get our Nest doorbell hooked up.

There is an existing internal chime which consists of this box, then two additional plug in chimes (they are literally wireless things just in a regular plug socket)

The chime wiring is as follows, anyone any idea what I need to attach the nest chime connector to?

There was no battery in there when I took the lid off.

Many thanks in advance

 

[He who knows]

Does the existing stuff work?

What powers it?

Is the power the same that the Nest needs?

What does the wiring diagram & insructions for the Nest tell you?

 

[NeddyB]

Existing kit works fine, wires come out the door into this box in the porch from what I can work out.

Google don't supply a diagram with this kit, just instructs you to a video where the chime as F,T,R rather than the 1,2,3,4 that mine has

 

[He who knows]

It is a trading standards / consumer protection laws offence not to provide adequate instructions.

Plus I can't believe they don't even tell you what voltage it works on, whether it's AC or DC etc...