Features: Single phase asynchronous motor electronic speed regulator (SS22), using IC circuit and separated installation. With the characteristics of small size, high precision, wide speed ranges, low energy consumption, excellent mechanical performances, and easy maintenance. Widely used in motor drive devices for various automation mechanical production equipment. The compact circuit design provides precise speed regulation, important component of automation machinery. Very suitable for industrial equipment maintenance personnel and electrical engineers who require precise motor control in applications. Specifications: Material: Plastic Rate voltages: AC±110V/AC±220V Working voltages ranges: ± 10% Output current: up to 3A Power frequency: 50/60HZ Suitable motor power: 6-300W Speed control ranges: 90-1400/90-1700rpm Speed variation: 5% Environmental temperature: -10-50℃ Suitable for motors: single-phase asynchronous (small gear reduction motor) Package Includes: 1 Piece Asynchronous Motor Speed Controller note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.