Good morning everyone, I am looking to get a Flysky controller for TC racing and anything else.
I was looking at the specs of the NB4 an NB4 PRO to understand what makes the pro better. After looking at the specs sheets on their website it seems the main difference is the number of channels on the PRO being able to support 12 out of the box - having fast response on 2CH mode. Also besides the color and additional accessories, everything else is the same?

What is this 2CH "fast mode"
Thank you