36V/48V 350W Electric B-icycle bike Scooter Brushless DC Motor Speed Controller Product Feature: Voltage: 36V/48V Wattage: 350W Throttle : 1-4.2V Short voltage protect :31.50.5V/420.5V Color: silver Dimension: 105 x 70 x 35mm/4.13 x 2.76 x 1.38 Casing material: Aluminium How to use Turn off the power before wiring. 1. C-onnect the learning switch. 2. C-onnect the motor w-ire(phase A, phase B, phase C). Then c-onnect the hall plug. 3. C-onnect the power and the t-wist g-rip plug. 4. T-wist the g-rip plug. If the motor rotate reversely, cut off the learning switch, then c-onnect the learning switch again. If the motor doesnt rotate, check the wiring. If the motor forward rotation, go to step 5. 5. Keep the motor working at least 1 minute, cut off the learning switch. 6. T-wist the g-rip plug. If the motor works normal, c-onnect other w-ire. If not, adjust the t-wist g-rip w-ire, until the motor works normally. Package 1X Electric vehicle controller