Doorbell scematics and/or hardware

[jelledj]

Hello everybody,

I want a new doorbell system that I can hear in all rooms and activates an IP camera.

I am looking for a solution to turn my excising doorbell and alarm into a smart system that can trigger an event that rings the alarm.

Or a new hardware set that I can use to replace my current doorbell system.

I only found the bellow:
https://www.robbshop.nl/over-z-wave/z-w ... ve-deurbel

I searched the forum but did not find working projects.

I thought about placing an Xiaomi alarm at every floor.

Are there cheap outdoor (doorbell) buttons that I can install that will provide an event in Domoticz?

Are there cheap options that my current doorbell will be able to generate an event in Domoticz?

Even more fancy would be a microphone in the doorbell that rings my Freeswitch VoIP server and makes the phone ring, but that is probably to much to ask.