1This controller input AC220V, Armature port DC 0v-220v Cooperate with potentiometer, stepless adjustable freely 2Applicable to permanent magnet 2 wire motor and excitation 4 wire DC motor 3Suitable for industrial machinery and equipment, diy enthusiasts 4This motor controller board features stepless adjustable, linear stability, slight noise 5Can be used widely in garment textile equipment, gluing machine, etc. DC motor speed control device Features:This controller input AC220V, Armature port DC 0v-220v Cooperate with potentiometer, stepless adjustable freely. Applicable to permanent magnet 2 wire motor and excitation 4 wire DC motor.Suitable for industrial machinery and equipment, diy enthusiasts.This motor controller board features stepless adjustable, linear stability, slight noise. Can be used widely in garment textile equipment, gluing machine, conveying hot stampingmachine, bag making machine production line equipment, printing machine, roller conveyor, polishing machine, grinding machine, milling machine,woodworking machinery, automatic welding equipment, mixer, etc. DC motor speed control device.Specifications:Model: LY - 820Scope of application: DC excitation, permanent magnet, series excitation, motor motorInput voltage: AC 220VOutput voltage: DC 0v-220vMotor power: 0-750wSize:125 x 103 x 48mm/4.92 x 4.05 x 1.88inch Weight: 450gWiring:Package Included:1 x Motor Controller Board