Cascade Electronic Pressure Regulator with backhand relief and Indicator System.
The kit provides selectable clamp force for the attachment through a driver operated selector switch and indication of the force selected by colored lights on a cab mounted light bar. The system is standard with a control box to select three pressure settings.
Cascade recommends using a Low Pressure Tank Line Kit for a dedicated return connection to the truck tank.

Part # 6083517
24-48V with Anti-Spike
Appears to be universal for cascade trucks, but check with dealer for more info.

Cascade List Price $2,500.00