I didn't stop long on the ESU stand. They don't have anyone who speaks English and even their printed matter is all in German.
The Wireless ECoSControl Radio uses 2.4 GHz, another Bluetooth thing. There is no detailed spec at this point. so it is not clear if it is Bluetooth or some other type of system like the Roco wireless device. What was certain is that there was nothing working. All the devices were out of reach. There were a few devices under glass as you see in the photos below.