Integrating new wifi video doorbell with comfort

[schford]

So I  have bought one of these
 - http://www.hikvision.com/en/Products_acc...i6482.html

Brilliant little thing - only needs 2 wires so its a really easy swap with my existing doorbell.  
IT has the capability to also sound peoples existing doorbells.
Currently - I have a basic switch at the doorbell that goes back to a comfort input - when you press it comfort plays the doorchime (along with a bunch of other stuff).
Swapping that out and using the existing wires I can supply 24v to the doorbell and all works well.


When you press the bell button the voltage drops from circa 24v down to circa 20ish volts - if you have a look at the wiring diagram ont he second page here -
http://www.hikvision.com//uploadfile/ima...170519.pdfhttp://www.hikvision.com//uploadfile/image/11089_CUserswuqianyiDesktop%E4%B8%B4%E6%97%B6KB6003UD04258BSpecofDSKB6003WIPWiFiDoorbellV1.4.620170519.pdf ] 
you can see that that is what used to sound an existing doorbell.


What I want to find is something that sits where the mechanical chime should and changes state when the doorbell is pressed so I can monitor if the doorbell is pressed in comcfort - along with getting all the other benefits of a video doorbell.

Thanks in advance!
Stuart

[slychiu]

I think you need a relay  with 24VAC coil voltage. The voltage-freee relay contact should take the place of the pushbutton

[schford]

Would this do it?

https://www.amazon.co.uk/gp/product/B008EGN0QI/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

[slychiu]

Yes that looks right