I consider this as fake news because I heard it several times and today took a witness to confirm where it’s coming from.
Edit: I had the witness press the ‘pull tight’ the second time so I would be on the ladder to make sure the sound is from the left motor.
Edit2: What would you like? The gopro is in the workshop and ready to record if a video would help.
Edit3: I am sure there is a beeping device in my left motor and I asked for help to find it.
Trying to convince the community that this device does not exist is counterproductive.