Features: Our three mode sine waves controller supports 24V, 36V, and 48V voltages, enabling seamless voltages adaptation for power output in electric vehicles. Featuring an efficient metal heat dissipation design and advanced sine waves technology, it prevents overheating, reduces motor noise, and ensures quiet operate. Ideal for enthusiasts upgrading their e bikes, night commuters seeking quiet rides, and users who prioritize safe, comfortable journeys in quiet environments. Perfect for commuting, long distance cycling, or high temperature rides, delivering stable performances across diverse scenarios like family outings or daily travels. With built in chip for precise current control and compatibility with multiple electric bike models, it offer smooth acceleration and braking for enhanced riding experience. Specifications: Component: Metal Working voltages: 24V/36V/48V Power: 250W/350W Size: about. 9x5x3cm/3.54x1.97x1.18in Package Includes: 1pc Brushless Motor Controller note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.