KaKu has some product for this: http://www.klikaanklikuit.nl/shop/nl/be ... cdb-7000b/ but BEWARE: you can't connect this straight to the wires in your doorbell. You will need some sort of relay, the white wires on the KaKu thingy are supposed to be made contact when button is pressed, not directly connecting them to the 8V AC of your transformer
Build it like this:
Doorbell - 8V AC relay - KaKu thingy (or self built)
jannl wrote:A binary zwave switch could do about the same. But also a seperate powersupply is needed.
I have my router and stuff also in the meter cabinet (where the bell and transformer resides), my cheap 433Mhz uses a 12V battery. I made a Y-wire, so that i can leech 12V from my router
You could do the same with the binary sensor (if you prefer Z-Wave), it doesn't need that much power i think.
Or you could use an Arduino, like described here.
The Arduino needs 3.3V, you could take that from the transformer by using step-up / step-down modules.
However: this requires also an Arduino gateway connected to Domoticz. They're very cheap, but if you already have z-wave, I can imagine that you do not want to add yet another protocol.
