Feature:1. Not produce noise and vibration when driving, softness and comfortable feeling.2. Reduce controller temperature rise, increase the continuous travel mileage of the vehicle.3. More stable, higher efficient, lower current consumption, longer life.4. Made of high quality aluminium alloy and plastic material, sturdy, durable and long service life.5. KT LCD4 display screen used for KT series controller, just suitable for KT series controller, does not apply to other controller.Specification:Condition: 100% Brand NewItem Type: Electric Bicycle Brushless ControllerMaterial: Aluminum Alloy + PlasticColor: As Pictures ShownKT LCD4 Display Screen Used for KT Series Controller, Just Suitable for KT Series Controller, Does Not Apply to Other ControllerController Parameter: Controller Box Size: Approx. 12.7x6.7x3.9cm/5.00x2.64x1.54inchMaximum Current: 22±1ARated Voltage: DC36V/48VSpeed Set: 1 4.2VRated Current: 11ABrake Input: Low LevelLow Volttage Protection: DC30/40±0.5vKT LCD4 Display Screen Parameter: Size: Approx. 6.5x2.5x4.3cm/2.56x0.98x1.69inchCan Automatic Identify and Compatible with 24V, 36V, 48V Power Supply VoltageCable Length: 160cm/62.99inch Used for Connector1. Data display：Display running Speed，single running mileage and total running mileage，running time，electric assist device，motor power and temperature，battery voltage and charging state，braking state and using environment temperature and other bicycle parameters； 2. Smart electric quantity：True reflect battery electric quantity，real time record electric quantity consumption，insure running mileage；3. Stall setting：Multiple gears switch and assist gear automatic power savi