I have done some small hacks to get tellstick events that are not picked up by the openHAB tellstick binding into openHAB. This is done by a python script that sends REST requests to openHAB to notify of changes in these devices. It can be any device that is not picked up by the tellstick binding but are picked up by the Tellstick Duo. It’s a ugly hack, but it does the job for me at the moment, hopefully one day it will not be needed. Anyway it is here:

Tellstick Openhab hack on Github