8-in-1 Electric Bike Scooter Brushless Motor Speed Controller 36V/48V 350W 36V/48V 350W Electrocar Brushless motor controller fit for Electric scooters, electric bicycles Voltage: 36V/48V Wattage: 350W Short voltage protect: 31.50.5V/420.5V Dimensions: 105 x 65 x 32mm/4.13 x 2.56 x 1.26"