1. Product Overview
The King Meter T320 is a 48V LED display designed for electric bicycles, specifically compatible with Radpower Ebikes. It provides essential riding information and control functions through a clear LED interface. The display is available with two types of 5-pin waterproof plugs: Julet WP and Threaded.

Key functions include battery indication, PAS level indication, 6km/h walk assist, headlight control, and error code display.
2. Specifications
| Feature | Detail |
|---|---|
| Voltage | 48V |
| Protocol | J |
| Plug Type Options | 5Pins Julet WP plug, 5pins Threaded plug |
| Compatibility | Radpower Ebike |
| Display Type | LED |
| Functions Displayed | Battery Indication, PAS level Indication, 6km/h Walk assist function Indication, Headlight on/off, Error Codes |
Dimensions

3. Setup and Installation
The T320 display is designed for easy installation on your ebike handlebar. Ensure your ebike is powered off before beginning installation.
- Mounting: Securely attach the display to your ebike handlebar. The clamp is designed for a Ø22mm handlebar diameter.
- Connection: Identify the correct 5-pin waterproof plug type (Julet WP or Threaded) on your ebike's wiring harness. Connect the display's corresponding plug firmly. Ensure the connection is secure and waterproof.

⚠️ Disclaimer: Please mind potential fire risk and strictly follow the instruction manual for charging and storage. Ensure all connections are correct before powering on to prevent damage.
4. Operating Instructions

4.1 Power ON/OFF
After pressing the SWITCH button shortly, the display starts to work and provides the controller working power. In the power-on state, short press the SWITCH button to turn off the power of the electric vehicle. In the shutdown state, the meter no longer uses battery power, and the leakage current of the meter is less than 1uA. If the e-bike is not used for more than 10 minutes, the display will automatically shut down.
4.2 6km/h Walk Assist Function
Hold the MODE button for 2 seconds, the e-bike enters the state of walk assist. The e-bike is riding at a constant speed of 6 km/h, and the gear position indicator is not displayed. The power-assisted push function can only be used when the user pushes the e-bike; please do not use it when riding.
4.3 Headlight On and Off
Pressing the HEADLIGHT button will notify the controller to turn on the front light. Pressing the HEADLIGHT button again will turn off the headlights.
4.4 PAS Level Setting
Short press the UP or MODE button to switch the power-assisted level of the e-bike and change the output power of the motor. The default output power range of the meter is 0-5 gears, level 0 is no output level, level 1 is the lowest power, and level 5 is the highest power. The default level when the display is turned on is level 1.
4.5 Battery Indication
When the battery voltage is high, the five LED power indicators are all on. When the battery is under voltage, the last power indicator flashes for a long time, indicating that the battery is seriously under voltage and needs to be charged immediately.
5. Maintenance
- Cleaning: Use a soft, damp cloth to clean the display surface. Do not use abrasive cleaners or solvents.
- Storage: When not in use for extended periods, store the ebike and display in a dry, cool place away from direct sunlight.
- Connections: Periodically check all electrical connections for tightness and signs of wear or corrosion.
6. Troubleshooting (Error Codes)
The T320 display can indicate various error conditions through flashing PAS level lights or battery indicators. Refer to the table below for definitions of common error codes.

| Error Code | Definition |
|---|---|
| PAS level 1 light flashing | Current abnormal |
| PAS level 2 light flashing | Throttle abnormal |
| PAS level 1, 2 light flashing | Motor phase loss |
| PAS level 3 light flashes | Motor Hall signal is abnormal |
| PAS level 1, 3 light flashing | Braking abnormal |
| All PAS Level light flashing | Communication abnormal |
| All of the battery indication lights and Level lights flashing at the same time | Power on/off button sticking |
| All of the battery indication lights flashes | 6km button sticking |
| All of the battery indication lights and Level light flashing alternately | Register error |
7. User Tips
Based on general user feedback for ebike displays:
- Always ensure the display is securely mounted to prevent vibrations from affecting its performance.
- Keep the display screen clean for optimal visibility of information.
- Familiarize yourself with the error codes to quickly diagnose and address potential issues.
8. Warranty and Support
For warranty information, technical support, or any issues not covered in this manual, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
For general inquiries, you may refer to the official King Meter website or contact their customer service.





