Building or upgrading an electric bike? This complete e-bike conversion kit has you covered! The package includes a smart LCD display and a powerful motor controller that works with 250W to 350W brushless DC motors. The controller is super versatile - it handles 24V, 36V, or 48V systems with max current from 5A to 20A, and it automatically protects your battery with low voltage cutoff at 20V/31V/42V depending on your setup. What's really cool is the auto-detection feature - just connect the 'reset' wires and the controller will figure out your motor's configuration, whether it has hall sensors or not. The LCD display is packed with useful info: battery level indicator, motor power display, speed stages, current speed, trip distance, total distance, trip time, motor RPM, exact battery voltage, cruise control, and assist level settings. The whole package weighs about 1.5kg and comes in a 15x15x15cm box, making it easy to ship and handle. Whether you're converting a regular bike to electric or upgrading your existing e-bike's electronics, this kit gives you professional-grade control and monitoring capabilities. The display keeps you informed about your ride stats while the controller efficiently manages power delivery to your motor. It's the brain and nervous system your e-bike project needs for smooth, reliable performance!