1. Introduction
The G22 GPS Digital Speedometer is designed to enhance driving safety by providing precision speed tracking and a digital compass. This Head-Up Display (HUD) is suitable for all vehicle types and connects easily via a USB Type-C port, eliminating the need for complex wiring. It offers versatile display options, including both KM/H and MPH readings, customizable overspeed alarms, and automatic brightness adjustment for clear visibility in various lighting conditions. The integrated digital compass activates at speeds above 5 km/h, assisting drivers in maintaining their correct direction.
Important Note: Avoid signal-blocked areas such as tunnels or underground passages. The speed display may experience a brief lag after signal interruption. Do not modify the power connection or use a voltage higher than 5V.
2. Package Contents
Please verify that all items listed below are included in your package:
- 1 x G22 Car Speedometer
- 1 x USB Type-C Cable
- 1 x Suction Cup Mount
- 1 x User Manual
3. Product Overview
The G22 GPS Speedometer features a clear display and intuitive controls. Familiarize yourself with the components and their functions:
- Ambient Light: Automatically adjusts display brightness based on surrounding light conditions.
- Driving Direction Compass: Displays cardinal directions (N, S, E, W).
- Driving Speed: Shows current speed in KM/H or MPH.
- Multifunctional Adjustment Pulsator Keys: Used for navigation and parameter adjustment.
- 360° Suction Cup Bracket Connector: Point for attaching the suction cup mount.
- Automatic Photosensitive Hole: Sensor for automatic brightness adjustment.
- Type-C Interface: Power input port.
4. Setup and Installation
The G22 GPS Speedometer is designed for non-destructive, plug-and-play installation.
4.1 Mounting the Device
- Attach the suction cup mount to the 360° Suction Cup Bracket Connector on the back of the G22 device.
- Clean a suitable area on your car's dashboard or windshield.
- Press the suction cup firmly onto the cleaned surface and engage the lever (if present) to secure it.
- Adjust the angle of the device using the 360° rotation feature of the mount for optimal viewing.
4.2 Power Connection
- Connect one end of the provided USB Type-C cable to the Type-C Interface on the G22 device.
- Plug the other end of the USB cable into a 5V USB port in your car (e.g., a car charger, cigarette lighter USB adapter, or a car's built-in USB port).
- Once powered on, you will hear a 'beep' sound. The device will then begin searching for a satellite signal, indicated by '---' on the display.
- After approximately 1-3 minutes, when a signal is acquired, the display will show '0', indicating it is connected and ready for use.
5. Operating Instructions
The G22 HUD offers multiple display modes and adjustable settings.
5.1 Basic Display Functions
- Speed Display: Shows your current driving speed. You can switch between KM/H (kilometers per hour) and MPH (miles per hour).
- Digital Compass: Displays your driving direction (N for North, S for South, E for East, W for West). The compass activates automatically when your speed exceeds 5 km/h.
- Ambient Light: The device features an ambient light sensor for automatic brightness adjustment.
5.2 Controls and Settings
The device is controlled using the multifunctional adjustment pulsator keys (dial button).
- Short Press: Used to switch between display modes or confirm a selection within menus.
- Long Press (2 seconds): Used to enter or save settings.
- Dial Rotation: Rotate the pulsator key to navigate through menus and adjust parameter values.
5.3 Switching Display Modes
Short press the dial button to cycle through different display combinations:
- Speed + Ambient Light + Compass
- Speed + Ambient Light
- Speed + Compass
- Speed Only
5.4 Brightness Adjustment
The G22 features automatic brightness adjustment via its ambient light sensor. For specific preferences, manual adjustment is also available:
- Automatic Sensitivity: The device will automatically darken at night and be clearly visible during the day.
- Manual Control: Access the settings menu (long press dial button) to adjust brightness through 11 levels.
5.5 Overspeed Alarms
The device includes three preset overspeed alarm levels to promote safer driving:
- Level 1: 150 km/h (default)
- Level 2: 180 km/h
- Level 3: 200 km/h
These alarm levels can be adjusted within the settings menu.
6. Troubleshooting
If you encounter any issues with your G22 GPS Speedometer, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | No power supply or faulty cable. | Ensure the USB Type-C cable is securely connected to both the device and a working 5V USB power source in your car. Try a different USB port or cable if available. |
| Display shows '---' or '0' for an extended period. | Searching for GPS signal or signal blocked. | The device needs 1-3 minutes to acquire a GPS signal. Ensure the vehicle is in an open area with a clear view of the sky. Avoid tunnels or underground parking. |
| Speed display is inaccurate. | Speed calibration setting is incorrect. | Access the settings menu (long press dial button) and adjust the Speed Calibration (range 50–150%, default 107%) to match your vehicle's actual speed. |
| Compass is not displaying or is inaccurate. | Vehicle speed is too low or magnetic interference. | The compass activates only when the vehicle speed is above 5 km/h. Ensure no strong magnetic fields are near the device. |
| Display is too dim or too bright. | Automatic brightness adjustment issue or manual setting needed. | Ensure the Automatic Photosensitive Hole is not obstructed. If manual adjustment is preferred, access the settings menu to set the brightness level (1–11 levels). |
7. Specifications
| Feature | Description |
|---|---|
| Model | G22 GPS Digital Speedometer |
| Power Supply | 5V USB Type C |
| Material | PC+ABS |
| Input Voltage | DC 5V |
| Display | Speed (KM/H or MPH) + Digital Compass (N/S/E/W) |
| GPS Signal Lock Time | 1–3 minutes ( "-" searching / "0" connected ) |
| Speed Calibration | 50–150% range (Default 107%) |
| Overspeed Alarms Level 1 | 150km/h (default) |
| Overspeed Alarms Level 2 | 180km/h |
| Overspeed Alarms Level 3 | 200km/h |
| Brightness | Auto ambient light control or manual 1–11 levels |
| Compass Activation | Above 5 km/h |
| Controls | Short press to switch/confirm, Long press 2s to enter/save |
| Dial Rotation | Navigate menus, Adjust parameters |
8. User Tips
- For optimal GPS signal reception, ensure the device is placed in an area with a clear view of the sky, such as on the dashboard near the windshield.
- Regularly check your speed calibration against a known accurate speed source (e.g., your car's built-in speedometer or another GPS device) to ensure the most accurate readings.
- Utilize the overspeed alarm feature to help maintain safe driving speeds and avoid unintentional speeding.
- If you frequently drive in varying light conditions, the automatic brightness adjustment will provide the best viewing experience without manual intervention.
9. Warranty and Support
For any product-related inquiries, technical support, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
