No Bathroom Fan Solutions Timer Switch For Bathroom Fan?

Timer switch for bathroom fan? - no bathroom fan solutions

I spend double in the bathroom (with fan / light), and adds a timer function so that only the fan (which can be rotated after 30 minutes). I know there is a timer for this, but none that I see two switches on. Do not want to be in the light of the timer. Neither wants to cut all of the second additional switch. Is there a solution for me?