Hi !
After a couple of hours tinkering with the rotary dial, I have finally managed to get my Omnio UPS 230/10 actuator working on OH2.5 along with USB300.
Set the Feedback Telegram type to VLD (D2-01-01): 15 LRN (2s) 12 LRN
Turn on OH2.5 autodiscovery (Scan for Things)
Set the Manual Feedback to Launch UTE teach in: 13 LRN (2s) 11 LRN
Energy Measurement Switch should show up.
Play around with the rotary dial to fine-tune your device settings (message frequency, etc.
Enjoy!
Arnaud