Convert hand operated presses to automatic operation with Motor Pak™ power units. Carver Motor Pak power units include electronic speed control and two-hand "anti-tie-down" buttons for operator protection on two models. A standard Motor Pak and a Time & Pressure Release Motor Pak. They both have 1/2 hp D.C. permanent magnet motor, two-stage hydraulic pump. Pre-selected force setting is maintained automatically. Externally adjustable Solid-state motor speed control. External control valve and internal relief valve. Connecting hoses with an array of fittings and hardware also included. The Time & Pressure Motor Pak also comes with a digital timer and automatic pressure release operating valve. Please specify voltage and tonnage when ordering.