... 3.Over voltage protection 4.Short circuit protection EBIKE controller: soft start, 1:1 pedal assistance, Cruise, ... )6,Limited speed7,1:1 power-assisted8,Prevent bicycle from running when starting9,Driving further for power ... function.13,Can connect to Hall sensor motor or sensorless motor.We export our products worldwide. You can ... term business cooperation in near future. brushless controller 48V450W