Feature: 1. Metal Controller: The controller shell uses high quality aluminium alloy metal with groove design, which has a good heat dissipation function and can protect the internal circuit to avoid thermal overload. 2. LCD4 Display Meter: The LCD4 Display Meter can display many useful data, you can easily view these data, such as power display, battery voltage, backlight display, headlight display, brake display, riding speed, maximum speed, total one way distance, for pas sign, 6km/h thrust power assist, cruise function, etc. 3. Easy to Install and Use: The electric motor controller kit is very convenient to use, just follow the wiring diagram for wiring. The LCD display meter is easy to install. 4. Stable and Sensitive Control: This controller set allows stable and sensitive speed control of braking and direction changes. 5. Application: The kit includes KT 22A full waterproof controller, LCD4 display meter, 130X throttle, 8C power assist sensor, 1 pair brake levers and 1 to 4 wire, which is suitable for 36V/48V 500W brushless motor electric bicycle conversion. Specification: Item Type: Electric Motor Controller Kit Material: Aluminum Alloy + Plastic Product Color: As Pictures Shown Controller Box Size: Approx. 125x66x39mm / 4.9x2.6x1.5in Product Weight: Approx. 989g / 34.9oz Controller Connector Type: Waterproof Connector Controller Rated Voltage: DC 36V/48V Controller Rated Current: 11A Controller Maximum Current: 22±1A Controller Speed Setting: 1-4.2V Controller Brake Input: Low Level Controller Low Voltage Protection: DC 30/40±0.5V Applicable Motor Power: 500W LCD Display Meter Function Description: Switch button, up button, down button, battery level indicator, throttle sign, 6km/h power assist, brake sign, cruise sign, travel distance, total distance, backlight and headlights, power assisted sensor sign, maximum speed, riding speed (Metric system), battery voltage, distance (metric system).. Package List: 1 x 22A Controller1 x LCD4 Display Meter 1 x Meter Manual 1 x Throttle 1 x 8C Power Assist Sensor2 x Brake Lever1 x 1 To 4 Wire1 x Controller Wiring Manual Note: 1. It needs to be used in conjunction with products that conform to the communication protocol.2. Please allow 1‑2cm error due to manual measurement. Thanks for your understanding.