e-Bike Speed Motor Controller Key benefits Durable, water-resistant housing: The aluminum-alloy shell increases resistance to moisture and mechanical wear, extending service life and reliability in everyday riding conditions. Improved thermal management: Efficient heat dissipation protects internal circuitry and reduces the risk of thermal overload, improving performance consistency under load. Built-in electrical protections: Integrated undervoltage protection, overcurrent protection and stall (block) protection reduce risk of damage to the motor and controller and improve rider safety. Simplified, flexible wiring: Multiple color-coded wires separate distinct functions so you only connect the features you need. Unused functions can remain disconnected without impacting core operation, making installation and troubleshooting faster. What it does Controls motor speed and electrical flow for e-bike drive systems while actively protecting the system from electrical faults and thermal stress. Provides a compact, serviceable module with clear wiring for straightforward integration into an e-bike electrical system. Material and performance highlights Housing: aluminum-alloy shell for improved durability and moisture resistance. Thermal behavior: designed for effective heat dissipation to protect internal components and maintain reliable operation. Protection features: undervoltage, overcurrent, stall protection and additional safeguards to prevent common failure modes. Applications and use scenarios Daily commuter upgrade or replacement: Swap in the controller to restore reliable speed control and electrical protection for city and suburban e-bikes. Cargo and utility e-bikes: Robust housing and thermal management help sustain performance under heavier loads and longer operation times. Workshop repairs and custom builds: Color-coded wiring and modular connections speed installation and testing for technicians and DIY builders. Compatibility and installation notes Designed for use in e-bike speed motor control applications. Multiple color-coded wires denote different functions; connect only the required circuits to keep the setup clean and avoid unnecessary components. Follow your e-bike wiring diagram and safety procedures during installation. Ensure connectors and voltage ratings match your system before powering on. This controller focuses on durable protection, reliable thermal performance and easy wiring to improve safety and reduce downtime in e-bike applications.