WARNING: Everything is coded with the 2.2.3 version of the opentx/Companion Software. So if using an older version, it may be errors.

The otx file is just a prefet with an example of how the telemetry settings should look in the radio. 
Open the .otx file with Companion 2.2 or higher, then double click on model and a window should appear, after that navigate to the telemetry menu.

If you don't have any model nor settings you can upload this .otx directly to the radio. Otherwise load settings and model to Companion and then change the telemetry settings as indicated in our .otx file and upload it back to the radio.

Check the new version of the telemetry 5 users manual for an accurate explanation on our website: www.xicoy.com