Motorcontroller: soft start, 1:1 pedal assistance, Cruise, fault indicate,Over-voltage and short-circuit protection. Specification: 1.Size: Middle size. 2,Voltage: 48V 3,Rated power:500W. 4,Maximum Power: 600W. 5,Maximum Current:28A 6,MOSFET: 12pipes. Function brief introduction: 1,Water-proof. 2,Over-voltage and short-circuit protection 3,Under-voltage protection (protect life of battery) 4,Cruising function (manually operation and automatic operation) 5,Electronic soft-brake function (E-ABS optional) 6,Limited speed 7,1:1 power-assisted 8,Prevent bicycle from running when starting 9,Driving further for power-saving design 10,With silent design and without vibration 11,With hall protection 12,Universal Self-learning function. 13,Can connect to Hall sensor motor or sensorless motor. We export our products worldwide. You can require what you need. Service first , customer foremost! We believe our super product can attract every client. Items with more value than the price Welcome to inquiry and expect we can build up long term business cooperation in near future.