1. Introduzione
This manual provides detailed instructions for the installation, operation, and maintenance of your MAIMEIMI P24 OBD2 & GPS Dual System Heads Up Display. This device is designed to project essential driving information onto your windshield or display it directly on its screen, enhancing driving safety and convenience. It supports both OBD2 and GPS operating modes to ensure compatibility with a wide range of vehicles.
2. Prodotto finitoview
The MAIMEIMI P24 is a versatile heads-up display unit capable of monitoring various vehicle data. It features a dual-system design, allowing operation via your vehicle's OBD2 port or through GPS satellite signals. The device includes a high-definition display with multiple customizable interfaces and integrated alarm functions for critical driving parameters.

Figura 2.1: Fronte view of the MAIMEIMI P24 Heads Up Display showing speed, RPM, and voltage.

Figura 2.2: dettagliata view of the MAIMEIMI P24 showing dimensions, rotatable bracket, wheel button, photosensitive aperture, and Type-C interface.
3. Contenuto della confezione
Si prega di verificare che tutti gli articoli siano presenti nel pacco:
- MAIMEIMI P24 HUD Unit
- Staffa girevole
- Type-C OBD Cable
- Tappetino antiscivolo
- Manuale d'uso

Figure 3.1: Contents of the MAIMEIMI P24 package.
4. Installazione
The MAIMEIMI P24 can be installed in two primary ways: on the dashboard using the non-slip mat or mounted on the windshield. Choose the method that best suits your vehicle and driving preference.
4.1 Opzioni di posizionamento
- On the Instrument Panel: Place the non-slip mat on a flat surface of your dashboard. Position the HUD unit on the mat.
- Sul parabrezza: Attach the rotatable bracket to the HUD unit and then secure it to the windshield using the suction cup or adhesive provided with the bracket (if applicable).

Figure 4.1: Illustrates placing the HUD on the windshield or instrument panel.
4.2 Connessione
Connect the provided Type-C OBD cable to the HUD unit and then plug the other end into your vehicle's OBD2 port. The HUD will power on automatically when the vehicle is started.
5. Funzionamento
5.1 System Selection (OBD2 vs. GPS)
The MAIMEIMI P24 supports two operating modes: OBD2 and GPS. Upon startup, the device will attempt to connect via OBD2. If your vehicle is not OBD2 compatible or you prefer GPS mode, you can switch between systems using the control wheel/button.
- Modalità OBD2: Suitable for vehicles manufactured after 2008 that support OBD2 or EOBD protocols. This mode provides comprehensive vehicle data directly from the ECU.
- Modalità GPS: Works with all vehicle models. This mode relies on satellite signals for speed, altitude, and other GPS-derived data.

Figure 5.1: Comparison of GPS and OBD system functionalities.
5.2 Display Modes and UI Interfaces
The device offers 12 different display modes and multiple UI interfaces. You can switch between these to customize the displayed information and visual style according to your preference.

Figura 5.2: Esamples of various display modes and user interfaces.
5.3 Monitored Data Parameters
Depending on the operating mode, the HUD can display a variety of data:
- Modalità OBD2: Speed, Water Temperature, Oil Temperature, Voltage, Fuel Consumption, RPM, Clock, One-way Driving Distance, One-way Driving Time, Travel Direction, Intake Pressure, Air-fuel Ratio, Turbo Pressure, Intake Air Temperature, Hydraulics Pressure, Throttle, Engine Load, Transmission Oil Temperature, PID List, Front Acceleration, Lateral Acceleration, Roll Angle, Pitch Angle.
- Modalità GPS: Altitude, GPS Speed, Driving Distance, Driving Time, Date, Travel Direction, Roll Angle, Pitch Angle.

Figure 5.3: Icons illustrating the various data parameters the HUD can monitor.
5.4 funzioni di allarme
The device includes 10 alarm functions to alert the driver to potential issues, improving driving safety. When an alarm condition is met, the HUD will display a visual warning and emit an audible beep.
- Allarme di velocità eccessiva
- Allarme RPM
- Allarme temperatura acqua
- Voltage Allarme
- Turbo Pressure Alarm
- Allarme temperatura olio cambio
- Allarme pressione olio
- Engine Temperature Alarm
- Pitch Angle Alarm
- Roll Angle Alarm

Figure 5.4: Visual representation of the ten alarm functions.
5.5 Electronic Inclinometer
The integrated electronic inclinometer provides real-time monitoring of your car's body tilt and roll angles, which is particularly useful for off-road driving or navigating uneven terrain. The display shows appearance angle and roll angle, both ranging from -40° to 40°.

Figure 5.5: Inclinometer display showing various vehicle angles.
5.6 Impostazioni e personalizzazione
The device allows for various settings adjustments, including:
- Selezione dell'unità di velocità: Switch between MPH and KM/H.
- Selezione della lingua: Choose from multiple supported languages.
- Calibrazione della velocità: If you notice a discrepancy in speed display, you can manually fine-tune the speed reading according to the instructions in the full user manual.
- Luci d'atmosfera: Customize the color of the ambiance lights.

Figure 5.6: Options for multi-language selection, system selection (OBD/GPS), and speed unit selection (MPH/KM/H).
6. Note di compatibilità
Per favore riview the following compatibility information before using the OBD2 mode:
- The OBD2 system is compatible only with vehicles produced after 2008 that support OBDII and EOBD protocols.
- It is not suitable for cars made in the United States before 2004 or other cars made before 2008.
- The OBD2 system does not support OBDI and JOBD protocols.
- Known Incompatible Brands/Models (OBD2 System): Dodge, JEEP, Sail, Chrysler, French models, Italian models, Suzuki, Mazda 6, Infiniti (QX50, Q50, Q501), Toyota Avanza (2013 model), Lexus (IS250, EX250, ES300H), Honda (Jazz, CRV), Kia, hybrid vehicles, diesel vehicles, pickups, RVs, and vehicles with modified automotive computers.
- The GPS mode is universally compatible with all vehicle models.
7. Risoluzione Dei Problemi
If you encounter issues with your MAIMEIMI P24 HUD, please refer to the following common troubleshooting steps:
- Nessuna alimentazione/display: Ensure the OBD cable is securely connected to both the HUD unit and the vehicle's OBD2 port. Verify that the vehicle's ignition is on.
- Modalità OBD non funzionante: Check if your vehicle is compatible with OBD2/EOBD protocols (generally vehicles produced after 2008). If not, switch to GPS mode.
- Lettura della velocità imprecisa: Access the settings menu to perform a speed calibration. Refer to the detailed instructions in the full user manual for calibration steps.
- Perdita del segnale GPS: GPS signal can be temporarily lost in tunnels, underground garages, or areas with heavy obstructions. The signal should reconnect automatically once clear.
- Surriscaldamento del dispositivo: Avoid leaving the device in direct sunlight for extended periods, especially in hot climates, as this can affect performance.
For further assistance, please consult the complete user manual or contact MAIMEIMI customer support.
8. Specifiche
| Caratteristica | Specificazione |
|---|---|
| Numero di modello | P24 |
| Dimensioni del prodotto (L x P x A) | 5.03 x 2.89 x 1.47 pollici |
| Peso dell'articolo | 0.42 libbre (6.72 once) |
| Materiale | Acrilonitrile Butadiene Stirene (ABS) |
| Modalità operative | OBD2, GPS |
| Interfacce di visualizzazione | 12 customizable styles |
| Funzioni di allarme | 10 types (Overspeed, RPM, Water Temp, Voltage, ecc.) |
9. Garanzia e supporto
For warranty information and technical support, please refer to the warranty card included with your product or visit the official MAIMEIMI webluogo. Conserva la ricevuta di acquisto per eventuali richieste di garanzia.





