SIYI MK15E - Drone Low Battery Beep via QGC

I’m trying to get my SIYI MK15E to beep for low drone battery, configured via QGroundControl. I’ve set QGC’s battery failsafe and updated firmware. The RC already beeps for its own battery, but not for the drone’s.
Could you please confirm:

  1. How does the RC trigger a drone low battery beep (Mavlink parameters)?
  2. Are there specific RC settings needed for this alarm?
  3. Are there any known firmware version requirements or compatibility issues?

@SIYI
Is it possible ??

What about the low battery warning voice message in QGC? Doesn’t that work?

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It do work but i want to beep the RC . I can set beep with SIYI’s application UNIGCS.. so i thought if its possible with QGC.

This is a software function, not a remote control function. QGC needs to trigger its own alarm voice. You can check if the media volume on the Android system is turned on normally, as there are currently no other related settings.
Perhaps you can try using our UniGCS. This is a ground station software developed independently by us, which has higher compatibility with remote control.