The SC (Speed Criterions) Dual control gives you the ability to select different boom operating modes depending on the type of work you need to do. The joystick controls the proportional function of the first and second booms. The rotation of the booms and tilting of the head are are proportional functions driven by “roller” controls on the joystick. There are also buttons on the joystick that handle extension (for telescopic models) and the floating head system. In the detached section of the console, the buttons control the rotor, boom suspension, the ignition of the nitrogen accumulator for automatic return to the working position and the Electronic Floating System EFS for suspension of the head.