Thanks.
Found the answer here
https://www.domoticz.com/forum/viewtopi ... 75#p163421

Events was disabled in settings.

I seems as if I cannot install any plugins.

On another RPI, running Buster and Domiticz 2020.2, it works.
Could I be missing some python modules. How would I found out?

Hi I have installed an esp8266 running https://github.com/SwiCago/HeatPump/tree/master/examples/mitsubishi_heatpump_mqtt_esp8266_esp32 in my Mitsubishi heatpump. This seems to work using Google MqttLens. So I found this plugin to Domoticz, that I thought I could use: https://github.com/Masurov ...

Oh.
I think I got it.
I dont need the zwave nodes in node in node-red. Only the mqtt nodes. And then an mqtt-node in domoticz.
thanks!

I use node-red and MQTT to communicate between Tellstick Duo and Domoticz. Now, I was hoping that I could also use node-red to have MQTT send commands to and receive info from the z-wave devices in Domoticz. However, if I use the open-zwave nodes in node-red, nothing works. It seems as if both ...