MAXcontrol Control unit for MAXdrive, variable SoftStart-function for reliable catching / centring and safe accelerating of the stirring bar at different volume and viscosities, digital display, QuickStop-function against after-run and glass breakage. FABcontrol Identical to MAXcontrol, but with real speed display, beep-function for real speed below set speed. MAXcontrol Control unit for MAXdrive, variable SoftStart-function for reliable catching / centring and safe accelerating of the stirring bar at different volume and viscosities, digital display, QuickStop-function against after-run and glass breakage. FABcontrol Identical to MAXcontrol, but with real speed display, beep-function for real speed below set speed.