This is a kind of quality speed controller, which adopts ABS -retardant housing, wear resistance and can provide long service time. Small size, high accuracy, with wide speed regulation scope and low power consumption. -slip rotation knob design for easy adjust the working speed. Widely used in packaging, printing, food, electronics, instruments, clothing industry production lines for speed drive device. You can have a try. Features: Adopts ABS -retardant housing, wear resistance and can provide long service time. Small size, high accuracy, with wide speed regulation scope and low power consumption. -slip rotation knob design for easy adjust the working speed. One button to on/off the motor, and please disconnect the powersupply when it is necessary to stop the operation for a long time. It is easy to install and convenient to use. Superior operation performance, easy maintenance. Widely used in packaging, printing, food, electronics, instruments, clothing industry production lines for speed drive device. Specifications: Name: Speed Controller Model: SS22-A Material: ABS Max.AMP.: 3A Voltage: AC220V Frequency: 50/60Hz Item size: 80 * 56 * 41mm / 3.15 * 2.20 * 1.61in Item weight: 99g / 3.49ounce Package size: 92 * 89 * 50mm / 3.62 * 3.50 * 1.97in Package weight: 113g / 3.99ounce Packing List: 1 * Speed Controller