Features: According to the gear, accelerators, brake to control the starting and running of the vehicle, the speed of advance and retreat, and the strength of climbing. The speed sensors input allows superior closed rings control for regulating vehicle speed. Unique braking parameters allow simple, intuitively deceleration tuning. The controller could provide solid reversing braking power without relays or contactors, offers smooth, cost effective control of motor speed and torques. Easy to install: no complex operate, directly replace the old motor controllel. It is designs for various industrial applications, ranging from vehicles used for materials transport to golf carts. Specifications: Materials: Electronic component Size: about 20x17.5x7.3cm/7.87x6.89x2.87inch Voltages: 36-48V Current: 275A Product Model:1266-5201 Package Includes: 1Pc Motor Controller note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.