This Controller work with sensored Brushless DC motor and KT LCD only. This ebike controller is not suitable for scooters.  Work voltage:36V or 48V Universal (support both voltage).  Suitable for Brushless Non-gear Hub Motor.  This one is Square Wave Controller.  Controller (more stable, high efficiency, low current consumption,long life).    Model: LED900S  Current: 17A  Application: 350W motor  colour: black + silver  Material: composite material    Package Contents:  1 x controller  1 x LCD Display  1 x 130X Thumb Throttle  1 x Sensor    Only the above package content, other products are not included.  Note: Light shooting 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.