Features： 1、Manufacturing Material: The controller housing is made of high quality aluminum alloy and plastic materials, strong and durable, which undoubtedly extends its service life. 2、Groove Design: The groove design can better protect the internal circuit and avoid thermal overload due to its good heat dissipation function. 3、Multifunctional LCD4 Display Meter: The LCD4 display meter has a variety of functions that make it easier to view data on the panel. When riding , the product will display many useful data on your bike, such as power display, battery voltage, backlight display, headlight display, brake display, riding speed, maximum speed, total one way distance, PAS marking, 6km/h thrust assist, cruising function, etc. 4、Electric Bicycle Lithium Modification Kit: Electric bicycle lithium modification kit contains 17A waterproof controller, LCD4 instrument, 130X dial accelerator, 8C power sensor, a pair of brake handle left and right and one drag four wiring combination kit, suitable for 36V, 48V 350W brushless electric bicycle lithium modification. 5、Display Instrument Function Description: Switch button, up button, down button, battery level indicator, throttle marking, 6km/h thrust assist, brake marking, cruising function, travel distance, total distance, backlight and headlight, power sensor marking, maximum speed, riding speed (metric), battery voltage, distance (metric). Specification： Item Type: 350W Electric Scooter Controller Weight: Approx.895g / 31.6oz Material: Aluminum Alloy + Plastic Controller Box Size: Approx.93 x 61 x 35mm / 3.7 x 2.4 x 1.4in Controller Connector Type: Waterproof Connector Rated Current Of The Controller: 8A Maximum Current Of Controller: 17±1A Controller Speed Setting: 1-4.2V Controller Brake Input: Low Level Applicable Motor Power: 350W Package List： 1 x Controller  1 x LCD4 Meter   1 x Instrument Instruction  1 x Dial Accelerator  1 x 8C Assist Sensor 2 x Brake Handle  1 x 1 to 4 Wiring 1 x Controller Wiring Manual