Offering standard and bypass operating sequence choices, Geith hydraulic quick coupler control system has minimized component design and meets current as well as proposed safety standards (ISO/DIS 13031). While dust- and water-resistant control box features 4 buttons (power, unlock, lock, and hydraulic pressure signal/bypass), mounting bracket accelerates and facilitates installation of compact control box via suction cups or small screws. Safety features include audio warning signal.