1. Introducció
This user manual provides detailed instructions for the GKU D900JP Dual Dash Cam. Please read this manual thoroughly before using the product to ensure proper operation and to maximize its features. Keep this manual for future reference.
The GKU D900JP is designed to record driving footage in high definition, offering both front and rear camera views. It incorporates advanced features such as a Sony IMX335 STARVIS sensor, 5GHz WiFi connectivity, integrated GPS, High Dynamic Range (HDR) for improved image clarity, 24-hour parking monitoring, G-sensor emergency recording, and continuous loop recording.
2. Producte acabatview
2.1. Contingut del paquet
Verifiqueu que tots els elements que s'enumeren a continuació s'inclouen al vostre paquet:
- GKU D900JP Main Unit
- Càmera posterior
- Manual d'usuari
- Targeta de garantia
- Charging Cable (Cigarette Lighter Power Cable)
- Targeta SD de 64 GB
- Cinta de doble cara 3M
- Electrostatic Protection Film
- Wiring Removal Tool
- Wiring Clips

2.2. Característiques del producte
- Gravació d'alta resolució: Front 4K (800W pixels) and Rear 2.5K Full HD simultaneous recording.
- Sony IMX335 Sensor & STARVIS Technology: Ensures clear and vivid images day and night, suppressing noise in low-light conditions.
- GPS integrat: Accurately records driving route, location, and speed data.
- Pantalla LCD d'1.47 polzades: Permet en temps real viewing of recorded footage.
- 5GHz Wi-Fi & App Control: High-speed data transfer to smartphones for viewing, downloading, and sharing videos via the GKU GO app.
- HDR Function: Optimizes images in strong backlight or high contrast scenes, preventing overexposure and underexposure.
- Rotatable Cameras: Front camera rotates 340°, rear camera rotates 360° for flexible angle adjustment.
- Supercondensador: Provides stable power supply and enhanced durability in extreme temperatures (-20°C to 70°C).
- Enregistrament en bucle: Sobreescriu automàticament els més antics files quan la targeta SD està plena.
- Enregistrament d'emergència del sensor G: Bloqueja automàticament el menjartage upon detecting impacts or sudden braking to prevent overwriting.
- Monitorització d'aparcament les 24 hores: Utilizes G-sensor and time-lapse recording (requires dedicated ACC step-down cable, sold separately).
3. Configuració
3.1. Inserció de la targeta SD
- Assegureu-vos que la càmera del salpicader estigui apagada.
- Locate the SD card slot on the main unit.
- Insert the provided 64GB SD card (or a compatible U3 standard SD card up to 512GB) into the slot until it clicks into place.
- Upon first use, it is recommended to format the SD card through the dash cam's settings menu to ensure optimal performance.

4. Instal·lació
4.1. Mounting the Front Camera
- Netegeu la zona del parabrisa on es muntarà la càmera del salpicader.
- Apply the electrostatic protection film to the chosen area on the windshield. This allows for easier removal later.
- Attach the 3M double-sided tape to the dash cam's mounting bracket.
- Press the bracket firmly onto the electrostatic film on the windshield.
- Attach the main unit to the bracket. The front camera can be rotated 340° to adjust the viewangle de ing.
4.2. Mounting the Rear Camera
- Clean the rear windshield area.
- Attach the rear camera using the provided 3M double-sided tape.
- Connect the rear camera cable to the main unit. The rear camera can be rotated 360° for optimal positioning.
4.3. Power Connection and Cable Management
- Connect the charging cable to the main unit and plug the other end into your car's cigarette lighter socket.
- Route the power cable and rear camera cable neatly along the edges of the windshield and interior trim using the provided wiring removal tool and clips.
- For 24-hour parking monitoring, a dedicated ACC step-down cable (sold separately) is required for direct wiring to the car's fuse box.
5. Instruccions de funcionament
5.1. Encendre/apagar
- The dash cam will automatically power on and begin recording when your vehicle's ignition is turned on.
- S'apagarà automàticament quan s'apagui el contacte.
5.2. Enregistrament bàsic
Once powered on, the dash cam will automatically start recording. The 1.47-inch LCD screen will display the live view from the cameras.
5.3. Navegació del menú
Use the physical buttons on the dash cam to navigate through the menu options. Refer to the on-screen prompts for specific functions like formatting the SD card, adjusting recording settings, or changing display modes.
6. App and Connectivity
6.1. Connecting to the GKU GO App
- Download the "GKU GO" app from the Apple App Store or Google Play Store.
- Turn on the dash cam's Wi-Fi function (refer to the dash cam's menu).
- On your smartphone, go to Wi-Fi settings and connect to the dash cam's Wi-Fi network (SSID and password can be found on the dash cam screen or in the manual).
- Obre l'aplicació GKU GO. Ara pots view viu footage, navegar per vídeos gravats, descarregar files, and adjust settings directly from your phone.
Note: For optimal connection, temporarily disable your phone's cellular data and Bluetooth when connecting to the dash cam's Wi-Fi.
6.2. High-Speed 5GHz Wi-Fi
The GKU D900JP supports 5GHz Wi-Fi, enabling faster data transfer speeds compared to standard 2.4GHz connections. This facilitates quick viewing and downloading of high-resolution video files al teu telèfon intel·ligent.
7. Funcions avançades
7.1. Seguiment GPS
The integrated GPS module accurately records your vehicle's driving route, location, and speed. This data can be viewjuntament amb el teu vídeo footage using the dedicated GKU GO app or PC player, providing crucial evidence in case of an incident and enhancing your travel records.
7.2. HDR Night Vision
The High Dynamic Range (HDR) function optimizes video quality in challenging lighting conditions, such as strong backlight or low light. It captures details in both bright and dark areas simultaneously, reducing overexposure and underexposure to produce clear and balanced footage, especially during night driving.
7.3. Monitorització d'aparcament les 24 hores
When connected to a dedicated ACC step-down cable (sold separately), the dash cam can monitor your vehicle for 24 hours. It supports G-sensor emergency recording and time-lapse recording modes to capture events while parked.
7.4. G-Sensor Emergency Recording
The built-in G-sensor detects sudden impacts or rapid acceleration/deceleration. When triggered, it automatically locks the current video segment, protecting it from being overwritten by loop recording. These locked videos are stored in a separate folder on the SD card.
7.5. Enregistrament en bucle
The dash cam continuously records video in short segments (e.g., 1, 2, or 3 minutes). When the SD card reaches its storage limit, the oldest unlocked files are automatically overwritten by new recordings. This ensures continuous recording without manual intervention.
8. Manteniment
8.1. Gestió de targetes SD
- Regularly format the SD card (e.g., once a month) to prevent data corruption and ensure smooth recording.
- Back up important video filea un ordinador o a un emmagatzematge al núvol abans de formatar.
- Replace the SD card if you notice any recording errors or performance degradation.
8.2. Neteja del dispositiu
- Use a soft, dry cloth to clean the camera lenses and the device body.
- Eviteu utilitzar netejadors abrasius o dissolvents que puguin danyar el dispositiu.
9. Solució De Problemes
If you encounter any issues with your GKU D900JP Dash Cam, please refer to the following common solutions:
| Problema | Causa possible | Solució |
|---|---|---|
| La càmera del salpicader no s'encén. | No power supply; faulty cable; car's power outlet issue. | Check power cable connection; test with another power source; ensure car's ignition is on. |
| L'enregistrament s'atura o es congela. | SD card error; incompatible SD card; full SD card. | Format the SD card; use a U3 standard SD card; replace the SD card. |
| Poca qualitat de vídeo. | Lent bruta; pel·lícula protectora encara a la lent; configuració incorrecta. | Clean the lens; remove any protective film; check resolution settings in the menu. |
| Problemes de connexió Wi-Fi. | Incorrect password; interference; phone settings. | Verify Wi-Fi password; disable cellular data/Bluetooth on phone; restart dash cam and phone. |
| El GPS no funciona. | Poor satellite signal; GPS module error. | Assegureu-vos de clar view of the sky; check GPS settings in the menu; contact support if issue persists. |
If the problem persists after attempting these solutions, please contact GKU customer support for assistance.
10. Especificacions
The following table outlines the technical specifications of the GKU D900JP Dash Cam:
| Característica | Especificació |
|---|---|
| Mida de la pantalla | 1.47 polzades |
| Dispositius compatibles | Smartphone, PC |
| Color | D900JP |
| Nom de marca | GKU |
| Fabricant | GKU |
| Número de model de producte | D900-JP |
| Altres Funcions | LED Signal Light Compatible, Sony IMX335 Sensor, STARVIS, Parking Monitor, Night Vision |
| Mida | Petit |
| Tipus de visualització | LCD |
| Mètode de muntatge | Front Glass Mount |
| Dimensions del producte | 4.2 x 10.6 x 5.4 cm; 550 g |
| Resolució de captura de vídeo | 4K + 2.5K |
| Tipus de muntatge | Front Glass Mount |
| Camp de View | 340 graus |
| Mètode de control | App |
11. Garantia i Suport
11.1. Informació de la garantia
The GKU D900JP Dash Cam comes with a 12-month warranty from the date of purchase. This warranty covers manufacturing defects and ensures that the product meets its specified performance standards. Please retain your proof of purchase for warranty claims.
11.2. Atenció al client
GKU provides dedicated customer support. If you have any questions, require technical assistance, or need to make a warranty claim, please contact our support team. Our Japanese-speaking support center and specialized customer service team are available to assist you.
Contact information can be found on the GKU official website or through the contact details provided with your product packaging.





