1. Introduction
The M22 HUD GPS Head-up Display is a universal multi-function speedometer designed to project essential driving information onto your car's windshield. It enhances driving safety and convenience by providing clear, real-time data such as speed, time, compass, travel time, and distance traveled directly in your line of sight. Featuring a high-definition projector and a glare-free design, it ensures optimal visibility day and night. The device utilizes a GPS+Beidou dual-mode chip for fast and accurate data updates and is compatible with all vehicles equipped with a USB interface.
Video: Product demonstration including installation and usage.
2. Package Contents
Please check the box for the following items:
- 1 x M22 HUD GPS Head-up Display
- 1 x USB Cable
- 1 x Reflective Film
- 1 x Non-slip Mat
- 1 x User Manual
Figure 2.1: Product Accessories
3. Specifications
| Attribute | Value |
|---|---|
| Model | M22 |
| Dimensions (L x W x H) | 95 x 50 x 30mm / 3.74 x 1.97 x 1.18inch |
| Connectivity | Wired (USB) |
| Material | PC + ABS |
| Screen Type | LED |
| Screen Size | 3.5 inch |
| GPS Chip | GPS+Beidou Dual-Mode, 10Hz refresh rate |
| Functions Displayed | Speed, Travelling Direction (Compass), Single Travelling Time, Single Distance, Time, Mileage |
| Alarm Features | Overspeed Alarm |
| Working Voltage | 5V (USB powered) |
| Origin | Mainland China |
| High-concerned chemical | None |
4. Setup Guide
Special Reminder:
- The working voltage of this product is 5V. It is forbidden to use a voltage higher than 5V for power supply.
- After the power is turned on, the compass icon flashes to indicate star search. The device can be used normally only after the icon stops flashing and remains on.
4.1 Installation Steps
- Plug the USB cable into the car's cigarette lighter port or a suitable USB (5V) power source.
- Carefully insert the wire into the A-pillar sealing strip to conceal it.
- Connect the other end of the USB cable to the HUD unit and place the HUD in a suitable position on your dashboard, ensuring a clear view for projection onto the windshield.
Figure 4.1: Non-destructive Installation Steps
4.2 Power On/Off
- The device features an automatic switch machine function: it will automatically power on when the car starts and automatically sleep when the car is parked.
Figure 4.2: Automatic Power On/Off
5. Operating Instructions
5.1 Function Display Overview
The M22 HUD provides a comprehensive display of various driving parameters. Refer to the diagram below for an overview of the display areas:
Figure 5.1: Function Display Areas
- 1. Compass: Displays direction (W West, N North, E East, S South).
- 2. Decorative lights: Ambient lighting.
- 3. Vehicle speed icon: Indicates current speed.
- 4. Overspeed alarm icon: Lights up when overspeeding.
- 5. Auto aperture: Automatic light sensor.
- 6. Multi-function display area: Shows various data based on selected mode.
- 7. TIME Clock MIN Driving Time TRIP Driving Mileage: Displays time, driving duration, and trip mileage.
- 8. Vehicle speed: Numeric display of current speed.
- 9. Speed unit: Shows KM/H or MPH.
5.2 Key Functions
The device features integrated buttons for easy control:
Figure 5.2: Integrated Button Design
- Power button: Long press for 2 seconds to turn off, long press again for 2 seconds to turn on.
- Add button (▶): Short press to switch the speed mode, enter settings and reduce parameter value. Long press for 2 seconds to turn off the alarm sound, and then long press to turn on the alarm sound.
- Reduce button (◀): Switch the display, increase the parameter value after entering the setting. Press and hold for 2 seconds to clear the fault code, then press and hold again to return to normal display.
- M key (Set button): Short press (click) to switch function display, and add menu options after entering the settings. Long press (press and hold for 2 seconds) to enter the setting, after adjustment, press and hold for 2 seconds to save and exit.
5.3 Display Modes
The M22 HUD offers multiple display interfaces that can be switched to meet different needs:
Figure 5.3: Multifunction Display Modes
5.4 Automatic Brightness Adjustment
The HUD automatically adjusts its brightness based on the intensity of the outside light, ensuring clear visibility in both daytime and nighttime conditions.
Figure 5.4: Automatic Brightness Adjustment
6. Enter Setup Mode
To enter the setting mode, press and hold the M key for 2 seconds. Once in setting mode, use the M key to switch between menu items (1-7). Use the Add (▶) or Reduce (◀) buttons to switch or adjust parameter values. To save and exit, press and hold the M key for 2 seconds.
6.1 Setting Options
| Menu Option | Function | Adjustment Range | Instructions for Use | Defaults |
|---|---|---|---|---|
| 1 | Speed fine-tuning | 50-150 | Adjust parameter value if there's an error between HUD speed and dashboard speed. E.g., if instrument shows 100 KM/H and device shows 105 KM/H, adjust to 102. | 107 |
| 2 | Overspeed alarm setting | 0-250 | Sets the speed at which the overspeed alarm activates. | 150 |
| 3 | Fatigue driving reminder | 1.0-8.0 | Reminds after continuous driving exceeds the set duration. | 8.0 |
| 4 | Brightness mode adjustment | 0-11 | 0 for automatic photosensitive mode, 1-11 for manual adjustment. | 0 |
| 5 | Speed unit | 0-1 | 0 for kilometer unit (KM/H), 1 for miles unit (MPH). | 0 |
| 6 | Time calibration | 0:00-12:00 | Adjust the time zone if satellite time is not received. After finding the satellite, adjust and synchronize with local time. | 8:00 |
| 7 | Factory data reset | 0-1 | Default is 0. Set to 1, then press and hold vertically for 2 seconds to save and exit to reset. | 0 |
7. Troubleshooting
7.1 No display on the screen, no electricity
Check if the USB cable is damaged. Replace the USB cable for testing. Ensure you are not using a voltage higher than 5V for power supply.
7.2 No vehicle speed
The power-on satellite icon flashes to indicate the satellite search status. In underground parking lots, tunnels, under bridges, or when there are obstacles, the device may not connect to the satellite. Move the car to an open road and wait for the satellite icon to stop flashing, then it can be used normally.
7.3 Time Calibration
- Adjust the time zone of your location if you do not receive satellite signals.
- After the device finds the satellite, adjust and synchronize with the local time.
7.4 Inaccurate speed
Check if the speed unit is correctly set (KM/H or MPH, refer to setting option 5). When the car leaves the factory, the manufacturer often increases the speed displayed on the dashboard by 5-7%. To fine-tune the vehicle speed, if your car's instrument shows 100 Km/h and the HUD shows 105 Km/h, adjust the parameter value to 102 (refer to setting option 1).
7.5 Wrong display of driving direction
When there is no speed, the satellite cannot identify your driving direction. The compass can only be displayed normally when the speed exceeds 5 KM/H.
7.6 The speed is still displayed after the car stops
In underground parking lots, tunnels, and overpasses, when there are obstacles, the GPS signal will be unstable and the satellite may drift. Please drive the car to an open road for accurate readings.
7.7 Turn off the buzzer
Long press the Add (▶) button for 2 seconds to turn off the buzzer. Press and hold again for 2 seconds to turn on the buzzer.
8. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the seller's policies or contact the point of purchase. Keep your proof of purchase for any warranty claims.