Make classic door bell smart?

[mlommers]

Have A look at:

Connecting a conventional doorbell to openhab

This tutorial will show how I connected my conventional doorbell to Openhab in order to monitor when the doorbell button is pressed causing the doorbell to ring and to be able to mute the doorbell. The latest comes in handy when sleeping durig daytime for example when working in night shifts or having young kids. As I have a doorbell which is working as expected I don’t want to change to much to the doorbell, furthermore I also want the doorbell to keep functioning when openhab is not working/o…

The installation of nodejs is a bit olddated but for the rest it is stil working fine in my house