1. Low voltage alarm speed mode: The speed limit is about 15Km/h. When the power returns to 37V,the throttle must return to the initial position to release the low voltage and return to normal operation. 2. Constant speed cruise: The speed is stable for about 6 seconds to automatically start the cruise control after the cruise is fixed, the throttle can be released; press the brake or push the throttle again to release the cruise control and enter the manual mode. 3. Speed: The low speed is 10±2km/h; middle speed:20km/h,the high.speed is 30km/h (maximum)Note:Load has a certain effect on speed. 4. Automatic shutdown: Automatically shut down 10 minutes after no operation. 5. Fit For: Electric Motorcycle/E-bike/Scooter/Electric Bicycle/Balance Skateboard. Specifications: Product Name: Electric Scooter Controller Kit Voltage:DC 36V Rated Power:350W Colour: Material:Metal + Plastic Package Contents: 1 x Controller 1 x Bluetooth board 1 x Accelerator 1 x Extension cable 1 x Face cover 1 x Brake handle Only the above package content, other products are not included. Note: Light reflection 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.