Button steering box has push buttons to move the bridge.
Inserting the button directly takes control of the movement of the bridge slowly. If you increase the pressure of the button, the speed of the movement will increase and as soon as you loosen or release the button, the power will be cut off and the bridge will stop.
Be careful with bridge speeds and stops; act according to a rule; after the driver feels the control of the bridge movement, make a stop in terms of safety and correctness.