Control units for mixers MIXdrive MIXcontrol eco: Prize-optimized control unit, speed setting and ON/OFF by turning 2 units. MIXcontrol 20: Stainless steel housing, digital speed display, 4-step power setting, 20 watts. MIXcontrol 40: Identical to MIXcontrol 20, but 10-step power setting, 40 watts, 2 sockets for MIXdrive stirres. Specifications Display: digital