The Richelieu 500782100 Unite Adjustable 2-Leg Base utilizes powder-coated steel construction and powerful DC motors with 330 lbs. lifting capacity. At 1.5 inches per second, the lifting speed swiftly moves you from one position to another. The sophisticated programming in the control box creates the quality of movement you'd expect from a high-end product. It provides 4 programmable positions along with a LED readout of desk height. No more searching for your favorite positions. The software ensures soft start/stop. The hall sensor measures speed and alignment, and the temperature sensors protect circuitry and motors to assure long life.