Advanced Control Devices, Inc. The Ultimate Hands Free Double Shifter for Turbo action, Winters and Fairbanks Shifters, Forward and Reverse Patterns Available. The standard since 1985. Total hands free operation. Shifts the 1-2 shift at the same or different rpm. Total custom built electronics have a special delay circuit included to allow the 2-3 shift even if no rpm drop is seen after the 1-2 shift.