Rated Voltage: 36V/48V Low Voltage : 31V/42V±0.5V Rated Power: 350W Limit Current: 17A color: White material: metal 1. pointer meter line 2. motor line 3.3-speed line 4.Anti-theft alarm line 5.self-learning line 6.hall line 7.throttle line 8.low brake 9.Anti-theft power line 10.Cruise speed line 11.battery(2 red wires battery +,black battery -) 12.high brake connect the motor line (color to color) connect the battery line(2 red wires :battery + , black:battery-) connect the controller throttle line(color to color) connect the hall line(if motor without hall line, don't need connect) docking the two self-learning lines, the wheel forward or reverse. (1.if wheel forward ,Separate the self-learning line. 2.if wheel reverse, Separate the self-learning line. Docking the self-learning line again,if wheel forward ,Separate the self-learning line.) other functions can be connected as needed. Package Contents: 1 x EBike Brushless Controller Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.