1. After the CDI is powered on, the digital display shows the ignition curve selected before the last shutdown. 2. Pressing the button cycles through numbers 0–9 on the digital display. Number 0 disables ignition (speed limited to 6000 rpm); numbers 1–9 correspond to nine adjustable ignition timing curves. Curve 1 represents the stock ignition timing; curves 1–9 support unrestricted engine speed. After installation, the curve can be adjusted to suit the motorcycle engine’s requirements. 3. The selected ignition curve is retained in memory and remains displayed after power-off. 4. Ignition curve 1 corresponds to a relatively conservative ignition advance angle; curve 9 corresponds to a higher ignition advance angle. The difference between adjacent curves is approximately 1–2 degrees. 5. Select the appropriate ignition curve based on riding conditions, track surface, or terrain. Type: Motorcycle Digital Ignition CDI Box Condition: New Connector Type: 4-Pin CDI Box Compatible Models: CG125, CG-125, 150cc, 200cc motorcycles Color: Blue & Black Material: Plastic Package Includes: 1 × Motorcycle Ignition DC CDI Box Note: Color appearance may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.