Alexa does not recognize device added in iHost

Devices added in iHost are not recognized by Alexa. Is this expected behavior?

Yes, cause iHost and the devices added to it work on your local network. Alexa can’t access to them nor Google Home. You have to use NodeRed if a palette exists for that.

I use the following palette in Node Red which exposes my Sonoff Zigbee devices linked to iHost to Alexa and Google Assistant.