Specification:Brand newSize: approx. 150*80*40mmRated Voltage: 48VRated Current: 31ARated Power: 500W/450W/600WMatching Motor: brushless motorUnder Voltage Protection: 41VThrottle Voltage: 1V to 4. 2VPhase Angle: 60/120 degreesBrake Level: Low /HighHeat Dissipation: Natural coolingAmbient Temperature: -20 degrees to 50 degreesProtection Grade: IP55Feature:Motor brushless controller for electric bicycle & scooter. 12pcs MOS tubes. Fine workmanship. Easy to install. Long service life. Operation Notice:Connect power, motor, and throttle, and power lock, but not connect the Hall lines. Connect the adaptive learning wire.Switch on the power lock, roll the throttle. If the motor works well, connect the Hall lines.If the motor rolling reversely, disconnect the adaptive learning wire and check the motor again, before connecting the Hall wire.Package Included:1 x Motor Brushless Controller