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DC 48V 500W Electric Bicycle Brushless DC Motor Speed Controller For Electric Bike Scooter E-bike Accessories Motor Controller Specification: Size: approx 150*80*40mm Rated Voltage: 48V Rated Current: 31A Rated Power: 500W Matching Motor: brushless motor Under Voltage Protection: 41V Throttle Voltage: 1V to 4 Phase Angle: 60/120 degrees Brake Level: Low /High Heat Dissipation: Natural cooling Ambient Temperature: -20 levels to 50 degrees Protection Grade: IP55 Feature: Motor brushless controller for electric bicycle & scooter 12pcs MOS tubes Fine workmanship Easy to install Long provider existence Operation Notice: - Connect power, motor, and throttle, and power lock, but not join the Hall strains Connect the adaptive studying cord - Switch at the strength lock, roll the throttle If the motor works well, connect the Hall strains - If the motor rolling reversely, disconnect the adaptive studying wire and examine the motor again, before connecting the Hall twine Note: - Please allow 0-1cm size errors because of guide size - Item coloration displayed in pictures could also be displaying barely varied on your pc computer screen since displays will not be calibrated identical