What does Pro Mode Do ?

[Youthan]

It basically makes it so that the LED doesn't blink once a second and ONLY comes on when you are being targeted

I think you're mistaken dark mode with Pro mode. Previously in ALG9 it was explained in that way :

Professional operating mode.

When hit by a laser in Pro mode the LED will flash only while the laser gun is firing.
In Standard mode the LED stays Red for the whole duration of the alert (Default OFF).

I also ride with Pro Mode (ALG9) and my LED is blinking every second. Beside it I have never seen if LED flash shorter than in STD mode. Simply in real scenario, there is no time to look on it. Just break, shut down and look on the road what will happen.

It would be good to see some video how it works