With load capacities from 35 to 150 lb and over 70 accessory options, Ohaus heavy duty Shakers are designed to handle a range of applications. Available as analog or digital models with microprocessor control to provide variable speed and consistent shaking, while ramping to the set speed. Microprocessor displays the last set-point and will restart If power is interrupted. Built-in tray and non-slip rubber mat included with all models. The exclusive Accu-Drive shaking system on digital models utilizes Dual-speed sensors to continuously monitor and maintain shaking speed - delivering exceptional speed control, accuracy & durability. Touchpad controls with independent LEDs for speed/time allow operator to view all settings at once. Timer displays elapsed time or when programmed to a set time, will turn off when time reaches zero.