... brake 3.Over voltage protection 4.Short circuit protection EBIKE controller: soft start, 1:1 pedal assistance, Cruise, fault indicate,Over ... )5,Electronic soft-brake function (E-ABS optional)6,Limited speed7,1:1 power-assisted8,Prevent bicycle from running when starting9,Driving ... can build up long term business cooperation in near future. brushless controller 48V450W