Enhanced Electric Mountain Bike Conversion Kit: This kit includes a 40A three-mode sine wave controller and an S830 LCD display, specifically designed for electric mountain bikes with lithium batteries. Powerful and Efficient Control: The sinusoidal three-mode controller supports brushless motors with and without Hall sensors, providing smooth and precise control. It is suitable for 36V48V52V systems with power ratings ranging from 1500W to 2000W. Intuitive S830 LCD Display: The S830 LCD display offers a clear and comprehensive interface, allowing riders to easily view and adjust various parameters such as speed, battery level, and power modes. Its self-learning feature ensures optimal performance. Reliable and Stable Performance: With the 40A controller and 15 FETs, this kit delivers stable power output and efficient energy conversion. The use of a sine wave controller further improves motor performance and reduces noise. Easy Installation and Compatibility: The kit is designed for easy installation and is compatible with various electric mountain bikes. It provides an ideal solution for riders looking to upgrade their bikes with electric assistance. Product Name:S830 meter + 40A controller. Size:As Pictures Show. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. Please allow slight manual measurement deviation for the data. Please kindly note that. Also, the each additional item means. The the same color and size. Transit time may be a little delayed because of the. If you have any questions.