UMX Ultrix, what does the beep mean?

[@DaveMerc]

Sometimes it can mean the ESCs are powered but not receiving a throttle signal or no pulses. I don't have an Ultrix so just speaking in general. Could be throttle calibration too.

[@babycat357]

Its a lost model beacon its activated when there's no throttle action

[@marhar2]

Sweet, that's a smart feature!