Description Model A is for customers who like pedal assistance moreCalled pedal assist 5 gears controller and LCD meter setsGeneral introductionAdjust the 1 1 assistance power each gear has different max output power 0 gear shut down assistance only mechanical work 1 5 power rate1 gear 20 speed2 gear 40 speed3 gear 60 speed4 gear 80 speed5 gear 100 speedUnder each gear the no load speed will be full Unique power assistance gear design can adjust the power without limit the speed Use the power supply reasonably and extend the range provide different power according to different road condition make your riding very comfortable The other competitive products has power assistance gear but to adjust the speed only never considered controllingthe current that waste the power and miss stepping will happen Unique low power mode design will control the discharging when power is low The battery will be easily damaged when power is low When you are riding if power is low that will appear stop and go This model has low power control mode to solve this phenomenon to protect your battery and make your riding comfortable Can adjust speed limit use the spin button to adjust the max rotate speed of motor accurately Controller Function Brief Introduction 1 Speed control handlebar throttle can connected with common handle bar potentiometer pedal accelerator default start stationary state green signal wire has 0 8v voltage when reach to 1v bike moves and rea