The Millipak 4Q is a full 4-quadrant controller that allows operation in direction changing and regenerative contactor-free. It operates in either torque or closed loop speed control mode. It also permits adjustable regenerative braking without the use of additional electronic circuitry and contactors. The Millipak 4Q are used in applications such as  small pallet trucks, sweeper, scissor lifts, golf carts, marine and other electric vehicles fitted with permanent magnet DC motors.

Some of its features include torque/speed contol, regenerative braking, integrated logic unit, calibrator interface, flash memory, IP66 protection, soft start pump option and so on.