[ Dashboard (circuit board) ] Core functions: integrated display of key information such as vehicle speed, power, riding mode, mileage, etc., supports Bluetooth connection to mobile phone APP to achieve data synchronization and remote control; equipped with touch buttons or knob operation, convenient for users to quickly switch functions during riding. Technical parameters: high-resolution LCD display or LED digital tube, still clearly visible under strong light; working voltage adapted to scooter battery system, with low power consumption design to long-term stable operation; supports wide temperature working environment (-20 to 60), adapting to different climatic conditions. Safety features: built-in overvoltage, undervoltage, short-circuit protection circuit, real-time monitoring of dashboard working status; waterproof and dustproof level reaches IP65 or above, effectively resisting rain and dust invasion, ensuring riding safety. Design advantages: modular circuit board design, easy to install, repair and upgrade; appearance fits the overall style of the scooter, thin and compact, does not affect the vehicle structure and riding experience. [Controller] Core functions: Precisely control the motor speed and torque to achieve smooth acceleration, deceleration and ; support multiple riding mode switching (such as energy-saving mode, sports mode) to meet the needs of different users; have energy recovery function to improve battery life.Technical parameters: Perfectly suitable for 4 Ultra original-car power motor; adopt advanced vector control algorithm, high control accuracy and fast response speed; built-in temperature sensor, real-time monitoring of controller temperature to prevent overheating. Safety features: With overcurrent, overtemperature and undervoltage protection functions, effectively protect the motor and battery; support anti-flying protection to avoid motor loss of control due to line faults; with soft start function to reduce the impact on the battery and motor. Performance advantages: using high-performance chips and high-quality electronic components, high reliability and long service life; with self-diagnosis function, can quickly locate faults through indicator lights or connected devices; convenient function optimization and problem repair. [Silicone waterproof protective cover] Waterproof sealing: precision molded in , tightly fits the outline of the circuit board, the edge adopts a double sealing structure, with a waterproof rubber ring design, the waterproof level reaches IP67, can withstand deep immersion and high-pressure water washing, and isolates moisture and dust in all directions. Convenient installation: It can be quickly installed and disassembled without professional tools, which is convenient for circuit board maintenance and repair; the inside is added with anti-slip texture to firmly wrap the circuit board, and it not shift during bumpy riding. Suitable Model: For 4 Ultra Electric Scooter Color: As Shown Material: PC+Plastic Package Contents: 1 * Electric Scooter Dashboard 1 * Motherboard Controller (Due to different batches, the printing on the circuit board and the words on the product may be different, which not affect the use) 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.