Specification: Item Type: S866 LCD Instrument and Controller Kit Color: As Pictures Shown Booster: 1:5 Material: Aluminum Alloy + ABS Plastic Weight: Approx.714g/25.2oz Controller Rated Voltage: DC 36V/48V Controller Maximum Current: 30A Controller Speed Setting: 1-4.2V Controller Brake Input: Low Level Applicable Motor Power: 1000W Controller Box Size: Approx. 149x84x42mm/5.9x3.3x1.7in, Meter Size: Approx. 81x48mm/3.2x1.9in Controller Wire Color Definition: 1. Yellow, Green, Blue Single Big Head Wire: Motor Wire 2. Red-white-black-blue-green-yellow Double Row Six-wire Port: Motor Wire 3. Red and Black Single Big Head Line: Power Line 4. Red, Blue, Black, Green and Yellow Single-row Five-wire Port: Instrument Line 5. Black and Yellow Lines (two): Power off Brake Handle Line 6. Red and Black Lines: Throttle Dial Line 7. Brown-black-yellow Line: Power Sensor Line 8. Black and Red Lines (two): Headlight Lines Package List: 1 x Controller 1 x Controller Wiring Instructions 1 x Meter 1 x Instrument Manual Note: Use the product that complies with the communication protocol.