1. Introducció
The Moman Car HUD Digital Speedometer (Model: HUD Basic) is a versatile head-up display designed to enhance your driving experience by providing essential vehicle information directly in your line of sight. This device features a digital compass, displays speed in KM/H or MPH, and includes an overspeed alert system. Its plug-and-play design ensures easy installation and compatibility with all vehicle types, including new energy, hybrid, fuel, buses, and trucks. This manual provides detailed instructions for setup, operation, and troubleshooting to ensure optimal performance and safe use of your Moman Car HUD.

Figure 1: Moman Car HUD Digital Speedometer. This image shows the compact design of the HUD unit with its digital display and suction cup mount.
2. Característiques del producte
- Digital Speedometer with Compass: Displays current speed and driving direction (N, S, E, W) clearly. Features a 10 Hz high refresh rate for real-time speed updates without delay.
- Compatibilitat universal: Designed for plug-and-play installation, compatible with all vehicles including new energy, hybrid, fuel, buses, and trucks, requiring only a 5V USB power source.
- Ajust automàtic de la brillantor: Built-in light sensor automatically adjusts display brightness based on ambient light, ensuring clear visibility day and night.
- Alarma de sobrevelocitat: Customizable speed alert function (default 120 KM/H) flashes to warn the driver when the preset speed limit is exceeded, promoting safer driving.
- Múltiples modes de visualització: Offers various display configurations including Speed + Ambient Light + Compass, Speed + Compass, and Simple Speed.
- Encès/apagat automàtic: The device automatically powers on and off with the vehicle's ignition.

Figure 2: GPS Compass & BeiDou Dual Mode Chip. This image highlights the HUD's ability to display speed and compass direction with high accuracy, leveraging advanced satellite technology.

Figure 3: Automatic Brightness Adjustment & Overspeed Alarm. This illustration demonstrates how the HUD adapts its brightness for day and night visibility and provides a visual warning for exceeding speed limits.

Figure 4: GPS HUD Works For All Cars. This image showcases the broad compatibility of the HUD with different vehicle types, including new energy, hybrid, fuel, trucks, and buses, powered by a standard 5V USB port.
3. Contingut del paquet
Si us plau, comproveu el contingut del paquet en desembalar-lo per assegurar-vos que hi hagi tots els elements:
- Moman HB1 GPS HUD Unit
- Manual d'usuari
- Ventosa rotativa
- Cable micro USB
- Mat antilliscant

Figure 5: Product Accessories. This image displays all items included in the package, such as the HUD unit, manual, suction cup holder, USB cable, and non-slip mat.
4. Instal·lació
The Moman Car HUD is designed for simple plug-and-play installation. Follow these steps:
- Connecteu el cable USB: Plug the larger end of the Micro USB cable into a 5V USB port in your car (e.g., car charger, USB port, or cigarette lighter interface).
- Connecta't al HUD: Connect the Micro USB end of the cable to the Micro USB interface on the Moman HB1 HUD unit.
- Position the HUD:
- For dashboard placement: Use the provided non-slip mat to secure the HUD on your dashboard.
- For windshield placement: Attach the rotary suction cup holder to the HUD's bracket interface, then secure the suction cup to your windshield. Adjust the angle for optimal viewing.
Once connected, the HUD will power on automatically with your vehicle's ignition.

Figure 6: Simple Installation, Plug and Play. This image illustrates the three easy steps for installing the HUD: plugging the USB cable into the car's power source, connecting it to the HUD, and placing the HUD on the dashboard or windshield.
5. Funcionament
5.1. Display Functions Overview
The Moman HB1 HUD provides several key display functions:
- Velocitat: Mostra la velocitat actual del vehicle.
- Driving Direction (Compass): Shows cardinal directions (N, S, E, W).
- Alarma de sobrevelocitat: Visual alert when speed exceeds a set limit.
- Speed Unit Switch: Toggle between KM/H and MPH.
- Automatic Photosensitive: Ajusta la brillantor de la pantalla automàticament.
- Encès/apagat automàtic: Powers on/off with vehicle ignition.

Figure 7: Moman HB1 Display Functions. This diagram illustrates the various display elements and physical components of the HUD, including its dimensions, compass, speed display, ambient light, dial button, and interfaces.
5.2. Canvi de modes de visualització
The HUD offers multiple display modes. Refer to your manual for specific button operations to cycle through these modes:
- Mode 1: Speed + Ambient Light + Compass
- Mode 2: Velocitat + Brúixola
- Mode 3: Simple Speed (displays only speed)

Figure 8: Multiple Display Modes, Switch Freely. This image shows the three available display modes: Speed with Ambient Light and Compass, Speed with Compass, and Simple Speed.
5.3. Changing Speed Units (KM/H to MPH)
To switch between Kilometers Per Hour (KM/H) and Miles Per Hour (MPH), locate the dial button on the HUD unit (refer to Figure 7). The exact procedure may vary slightly, but generally involves:
- Press and hold the dial button for a few seconds to enter the settings menu.
- Short press or toggle the dial button to navigate through the settings (often labeled P1, P2, etc.). Look for a setting related to "Speed Unit" or "KM/H MPH". This is often setting P5.
- Once on the correct setting, short press the dial button to change the unit.
- Press and hold the dial button again to save the setting and exit the menu.
The default unit is KM/H. If you encounter difficulty, refer to the detailed instructions in the included paper manual.
5.4. Setting Overspeed Alarm
The overspeed alarm can be customized. The default alarm value is 120 KM/H. To adjust this value:
- Enter the settings menu by pressing and holding the dial button.
- Navigate to the "Overspeed Alarm" setting (check your manual for the specific program number, e.g., P1, P2).
- Use short presses or toggles of the dial button to increase or decrease the alarm speed value.
- Press and hold the dial button to save the new setting and exit.
When your vehicle exceeds this set speed, the HUD will automatically flash to alert you.
6. Informació de seguretat
Please read and follow these safety guidelines to ensure safe operation and prevent damage to the device or vehicle:
- Ensure the HUD is securely mounted and does not obstruct your view of the road or any vehicle controls.
- No intenteu desmuntar ni modificar el dispositiu. Això pot anul·lar la garantia i causar danys.
- Keep the device away from extreme temperatures, direct sunlight for prolonged periods, and excessive moisture.
- Use only the provided USB cable or a compatible 5V USB power source.
- While driving, avoid making extensive adjustments to the HUD settings. Make adjustments only when the vehicle is safely parked.
7. Solució De Problemes
If you encounter issues with your Moman Car HUD, please refer to the following common problems and solutions:
| Problema | Causa possible | Solució |
|---|---|---|
| El dispositiu no s'encén. | Sense font d'alimentació o connexió fluixa. | Ensure the USB cable is securely connected to both the HUD and a working 5V USB power source in the vehicle. Check if the vehicle's USB port or cigarette lighter is active. |
| Speed display is inaccurate or shows 0. | Poor GPS signal or initial satellite acquisition. | Assegureu-vos que el vehicle estigui a l'aire lliure amb una llum clara view of the sky. It may take a few moments for the HUD to acquire a stable GPS signal upon startup. Drive for a short distance to allow it to calibrate. |
| La pantalla és massa tènue o massa brillant. | Automatic brightness adjustment issue or sensor obstruction. | Ensure the photosensitive element (refer to Figure 7) is not obstructed. The device automatically adjusts brightness. If persistent, check the manual for any manual brightness override settings. |
| Cannot switch to MPH (or KM/H). | Procediment de configuració incorrecte. | Refer to Section 5.3 "Changing Speed Units" and the detailed instructions in your paper manual. Ensure you are pressing and holding the dial button correctly to enter and exit the settings menu, and short pressing to navigate/change values. |
| Overspeed alarm not working or set incorrectly. | Alarm value not set or feature disabled. | Refer to Section 5.4 "Setting Overspeed Alarm" to ensure the alarm value is set correctly and the feature is enabled. |
8. Especificacions
| Característica | Detall |
|---|---|
| Número de model | HUD Basic |
| Entrada de potència | USB de 5 V |
| Tipus de visualització | LED digital |
| Unitats de velocitat | KM/H, MPH |
| Freqüència d'actualització | 10 Hz |
| Dimensions (aprox.) | 4.13 x 3.15 x 2.8 polzades (paquet) |
| Pes (aprox.) | 4.66 unces (paquet) |
| Fabricant | mare |
9. Garantia i Suport
Moman products are designed for reliability and performance. For warranty information and technical support, please refer to the warranty card included with your product or visit the official Moman website. You can also contact Moman customer service through the retailer where you purchased the product.
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