The NIKO stuff you find on Crestron Website is more or less only switches/outlets etc because these were compatible with the CLWI devices from Crestron.?
If its the Niko Home Control II yout customer is haveing there seems to be an integrator and a hobby API you could use:?
Both of them seem to be based on MQTT where you can find some Crestron modules for on Github, eg:?
I must note that I don't have any experience with these modules.?
