Features:Speed Control Knob: This knob can adjust motor speed, easy to use.Clear operation panel and dial, the pointer can point speed accurately.When the load is fan or pump, the power saving effect is remarkable.With IP5X dustproof class, can be used for panel embedded or wall mounted, bottom incoming wire.Used for speed control of electromagnetic asynchronous motor (slip motor), realizing stepless adjustment of constant torsion.Specification:Model Number: Motor speed controllerMotor Type: AC MotorCondition: 100% NEWInput Speed: 1rpmOutput Speed Range: 1Exciting Voltage: DC90VField Current: 5AMounting-hole Size: Approx. 192 x 132mm / 7.6 x 5.2inchProduct Size: Approx. 210 x 150mm / 8.3 x 5.9inchWeight: Approx. 944g / 33.3ozModel: JD1A-40Speed Adjustable Range: 132-1320RPMControl Motor Power: 15-40kWInput Voltage: AC 200-240VFeatures 1: Motor Speed ControlFeatures 2: Motor ControllerFeatures 3: Adjustable Motor Speed ControllerFeatures 4: AC Motor Speed ControllerColor: white + blackMaterial: plastic + metal + copperPackage Contents:1 * motor1 * set of accessoriesOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.