1Made of high quality materials, lightweight and durable. 2Drive motor start more smoothly, ride more comfortable. 3The climbing power is stronger, the motor operation sound is small, eliminate tire noise. 46 tube (dual-mode square wave) controller. 5Functions: power supply positive pole, power supply negative pole, electric door lock, motor phase line, hole line, turns to accelerate with the lines, power lines, three lines to speed, low level of the brake, the high level of the brake line, general instrument line, a line instrument line, constant speed cruise line, anti-theft alarm the power cord, anti-theft alarm signal, intelligent recognition self learning lines.Condition: 100% Brand New Item Type: Motor Controller Material: metal Power: 350W Voltage: 36V-48V, 24V-36V (optional) Current limit: 15-18A Size: approx. 12.9x7x3.4cm/5.1x2.8x1.3inch1 x Motor ControllerPlease note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.