dc motor controller

e-bike controller 1.Name:12 MOSFET Blushless controller 2.MOdel:WZK-4830B 3.Variety:48V/500W 4.Feature: 1)Rate voltage: DC48V 2)Rate power: 500W 3)Rate current: 30A 4)Under-voltage protection: DC41.5V 5)Current limited:30A±0.5A 6)Efficiency:≥83% 7)Consumption:<1.5W 8)Controller category:Brushless direct current 9)Applicable model:electric bicycle,electric scooter,electric vehicle 5.Function: 1)Super low noise whenstart up 2)Speed limited 3)Under-voltage protection 4)Under-current protection 5)Prevent theft 6)Water proof