What temp does the fan turn on on the MMM?

[BP-Revo]

Hey, I have a V2 MMM with the firmware that is before the one that was just released.

My question is, at what temp does the fan turn on?

My fan turns on periodically but after I just let the truck park there for about 10-15 seconds it turns off. I figure if I know what temperature it turns on at, I can use it as an easy way to judge temperature.

Thanks

BP