The single-control linear voltage control hand unit includes two forward and reverse buttons (red) and a two-position slow-speed switch (black). The slow-speed switch adjusts from high (left) to low (right).
The system automatically changes from slow speed to fast speed when one of the forward or reverse buttons are held down for two seconds or more.
This effectively gives the hand unit three speeds — very slow (1), slow (1.5 times faster) and very fast (5 times faster).
The system includes a 1/8″ jack, quick-stop braking and a 9-volt alkaline battery.