Feature:1. Aluminum Alloy Controller Housing: The controller housing is made of high quality aluminum alloy with a grooved design, which protects the internal circuits from thermal overload due to good heat dissipation.2. Multifunctional LCD4 Display: The LCD4 display meter has a variety of functions that make it easier for you to view the data on the panel; while cycling, the product will display many useful data on your bike.3. LCD4 Display Function Description: Switch button, up button, down button, battery level indicator, throttle sign, 6km/h thrust assist, brake sign, cruise sign, travel distance, total distance, backlight and headlights, power assist sensor sign, etc.4. Wide Range of Applications: 22A controller kit is suitable for 500W motor, suitable for DIY electric bicycle, electric vehicle, electric scooter, folding bike, etc.; easy to maintain, can improve the riding fun, suitable for cyclists who like challenges.5. Bicycle Modification Controller Kit: Bicycle lithium battery modification controller kit includes 22A controller + LCD4 display meter + 130X thumb throttle + 8C power assist sensor.Specification:Item Type: Bicycle Lithium Battery Modification Controller KitMaterial: Aluminum Alloy + PlasticProduct Size: Controller Box: Approx. 126x66x38mm / 5.0x2.6x1.5inController Type: Square Wave ControllerController Connector Type: Ordinary Connector (Except Motor Waterproof Connector)Controller Rated Voltage: DC 36V/48VController Rated Current: 11AController Maximum Current: 221AController Speed Setting: 1-4.2VController Brake Input: Low LevelController Low Voltage Protection: DC 30/400.5VApplicable Motor Power: 500WLCD4 Display Function Description:Switch button, Up button, down button, battery level indicator, throttle sign, 6km/h thrust assist, brake sign, cruising sign, travel distance, total distance, backlight and headlights, power assist sensor sign, maximum speed, ride speed (metric), battery voltage, distance (metric).Controller Wire Color Definition:1. Black single big head line: waterproof motor line (9pin)2. Red and black single big head line: power line3. Red, blue, black, green and yellow single row five wire port: lcd4 dispay line4. Red and blue lines (two): power off brake lever line5. Red, black and white lines: thumb throttle line6. Brown, black and yellow line: power assist sensor line.Package List:1 x Controller1 x LCD4 Display1 x Display Manual1 x Thumb Throttle1 x Power Assist Sensor1 x Controller Wiring ManualNote:1. Note that the size of the motor matches the controller kit.2. Please allow 13mm error due to manual measurement. Thanks for your understanding.