HUD G1 GPS Speedometer Gauge User Manual

1. Product Overview

The MAIMEIMI G1 GPS Speedometer Gauge is a compact and versatile heads-up display (HUD) designed to provide essential driving information directly in your line of sight. Utilizing GPS and Beidou dual-mode chip technology, it offers accurate speed, driven distance, and driving direction, along with useful alarms and automatic features. It is compatible with all types of vehicles, including new energy, petrol-electric hybrid, fuel vehicles, buses, and trucks, and can be powered via a standard USB (5V) connection.

2. Package Contents

Please check the package for the following items:

• G1 HUD Unit
• User Manual (this document)
• Non-slip mat
• USB cable

3. Safety Information

Warning: This product's working voltage is 5V. It is forbidden to use a voltage higher than 5V for power supply, as this may damage the device.

4. Setup and Installation

1. Placement: Choose a suitable flat surface on your car's dashboard, such as near the A-pillar or central control area, ensuring it does not obstruct your view or interfere with driving. Use the provided non-slip mat to secure the HUD unit.
2. Power Connection:
   • Connect the provided USB cable to the G1 HUD unit.
   • Connect the other end of the USB cable to a car USB port (5V) or a cigarette lighter adapter (if using a cigarette lighter interface).
3. Automatic Power On/Off: The HUD is designed to automatically power on when the vehicle starts and power off when the vehicle shuts down, effectively protecting the car battery. A manual switch mode is also available for control.

5. Operating Instructions

5.1. Display Functions

The G1 HUD features a 2.6-inch HD display with the following indicators:

• Satellite Icon: Flashes while searching for GPS signal. Stops flashing and remains steady once a satellite connection is established for normal use.
• Vehicle Speed Display: Shows current driving speed.
• Compass: Displays driving direction (N for North, E for East, W for West, S for South).
• Speed Unit: Indicates whether speed is displayed in KM/H (kilometers per hour) or MPH (miles per hour).

5.2. Wave Button Function

The G1 HUD is controlled via a single wave button. Its functions are:

• Short press in: Confirms the selected option after entering the setting menu.
• Long press in: Enters the setting mode. After adjusting settings, press vertically for 2 seconds to save and exit.
• Push left: Moves between options after entering the setting mode.
• Long push left: Pushes left for 2 seconds to turn off the buzzer alarm. Repeat to turn it back on.
• Push right: Switches between concise mode and standard mode, and moves options after entering the setting mode.

5.3. Entering Setting Mode

To enter the setting mode:

1. Long press the wave button to enter the setting menu.
2. Push right to choose the desired menu option.
3. Short press in to confirm the selection.
4. After making adjustments, long press the wave button to save and exit.

5.4. Setting Options

6. Maintenance

The G1 HUD requires minimal maintenance. Keep the device clean and free from dust. Use a soft, dry cloth for cleaning. Avoid using harsh chemicals or abrasive materials that could damage the screen or casing.

7. Troubleshooting

If you encounter any issues with your G1 HUD, please refer to the following troubleshooting guide:

1. Screen without any display or no power:
   • Check if the USB cable is damaged. Try replacing it with another USB cable for testing.
   • Ensure the power supply voltage is not higher than 5V.
2. No car speed displayed:
   • After HUD power-on, the satellite icon will flash as it searches for a satellite signal.
   • Drive the car to an open road. The HUD will start displaying speed once the satellite icon stops flashing and a stable GPS signal is acquired.
3. Inaccurate Speed:
   • First, verify that the speed unit (KM/H or MPH) is correctly set in the settings menu (refer to Section 5.4, Menu 5).
   • Car manufacturers often calibrate dashboard speed to be 5-7% higher than the actual speed (based on satellite data). If your dashboard shows 100 and the HUD shows 105, you can adjust the parameter value in the settings (refer to Section 5.4, Menu 1) to correct this discrepancy (e.g., set to 102).
4. Driving direction display error:
   • The driving direction will be displayed normally once the vehicle speed exceeds 5 KM/H.
5. Speed is still displayed after the car stops:
   • In areas with obstructions such as underground parking lots, tunnels, or underpasses, satellite signal may be unstable, leading to temporary speed display even when stationary. This is normal behavior due to GPS signal limitations.
6. To turn off/on the buzzer:
   • Long push the wave button to the left for 2 seconds to turn off the buzzer alarm. Repeat the action to turn it back on.

8. Specifications

9. User Tips

• Initial GPS Lock: When first powering on or after a long period of inactivity, the satellite icon may flash. Drive the vehicle to an open area to help the device acquire a stable GPS signal faster.
• Speed Accuracy: If you notice a consistent difference between the HUD's speed and your car's dashboard speedometer, use the "Speed" adjustment setting (Menu 1) to calibrate it for better accuracy.
• Compass Functionality: The driving direction (compass) will only display accurately once your vehicle is moving above 5 KM/H.
• No Water Temperature Display: Please note that this device is a GPS speedometer and does not display engine parameters such as water temperature.
• Power Consumption: The G1 HUD is designed for zero power consumption when the car is turned off, as it uses a short power supply from the USB or cigarette lighter.

10. Warranty and Support

For any warranty claims, technical support, or further inquiries, please contact the seller or the manufacturer directly. Refer to your purchase documentation for contact details.

A PDF version of the user manual is available for download here.