Changes from red (Hp0) to green (Hp1) or green/yellow (Hp2) and controls track power with double solenoid mechanism with additional third solenoid for the green/yellow aspect. 2 additional hand levers. With base plate. Width 30 mm / 1-3/16*. Length 95 mm / 3-3/4*. Height 90 mm / 3-9/16*.