Originally Posted by xevias

Maybe not a new problem, but it's new to me.

Lately in Shanghai, Blinky ESCs have been coming directly from the factory with either pre-set additional timing or an ability to program timing and still have it blink.

Seeing how almost everything is made in China, I see US and EU starting to become infiltrated with these soon.

So, is there a technical check method to weed out the BS?