1, Product Specifications
| Feature | Description |
| Main Chip | D8 MT2503 / D9 4G Cat1 |
| Frequency Band | D8 - 2G / D9 - 4G |
| Operating Voltage | 9-36V DC |
| Operating Current | <300mA |
| Antenna | Built-in GPS & RF Antenna |
| SIM Card Slot | Nano push-pull type |
| Built-in Battery | Optional |
| Indicator Lights | Blue: Network signal
Green: GPS signal |
| GPS Support | GPS + BeiDou or GPS + GLONASS (selectable) |
| G-Sensor | Supported |
| Real-time Tracking | Supported |
| Route Playback | Supported |
| Geo-fencing | Supported |
| Alarm Notifications | Supported |
| Battery Level Display | Supported |
| Vehicle Info Settings | Supported |
| Function | Location tracking, geo-fencing, vibration alarm, overspeed alarm, anti-tamper alarm, route playback, and more.
(Note: Available features may vary by model.) |
Warning: This product should only be used within the specified voltage range. Exceeding the rated voltage may cause severe damage.
2, Product Configuration List:
| No. | Item | Quantity | Unit |
| 1 | Vehicle OBD Positioning Terminal | 1 | Unit |
| 2 | User Manual | 1 | Set |
| 3 | Packaging Box | 1 | Set |
Note: The above is the standard configuration of the complete product. Any accessories beyond this list require additional payment.
3. Product Installation & Usage Guide
Steps for Setup:
Install a GPRS-enabled Nano SIM card into the slot.
The device auto-powers on upon SIM insertion.
Indicator lights activate; a flashing blue light confirms normal operation.
Remove the terminal and plug it firmly into the vehicle’s OBD-II port (see installation diagram).
Launch the companion app, enter the device’s SN code, and log in (default password: 123456).
Indicator Light Status (Visible on the device body)
| Light Type | Light Status |
| GPS Signal (Green) | Solid: No GPS signal detected |
| | Blinking: GPS signal acquired |
| Network Signal (Blue) | Solid: No signal detected / Invalid SIM card |
| | Blinking (1s interval): Signal acquired |
| | Blinking (0.5s interval): Connected to server |
Note: All indicator lights will turn off after 5 minutes of operation, regardless of signal status.
Installation Diagram Notes:
The OBD-II port is typically located under the dashboard near the driver’s left knee area (specific panel shapes may vary by vehicle model).
Functionality of the G-Sensor (Gravity Sensor):
1, Vibration Alarm
Detects abnormal vehicle vibrations (e.g., collisions, unauthorized movement) and triggers real-time alerts.
2, Driving Behavior Analysis
Identifies sudden braking, rapid acceleration, and other actions by analyzing acceleration changes, enhancing safety monitoring.
3, Auto Sleep/Wake Mode
Enters power-saving mode when the vehicle is stationary and reactivates upon movement (requires integration with other sensors).
4, Tilt Detection
Sends alerts if the vehicle tilts or undergoes abnormal angle changes (e.g., accidents or towing scenarios).
Typical Applications:
- Anti-theft systems (alerts triggered by unauthorized towing)
- Fleet management (logs dangerous driving like sharp turns)
- Automatic crash notification (impact severity analysis)
Note: Sensitivity can be adjusted via the companion app to minimize false alarms.
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D09 4G Cat1 2G Compatible Voice Control OBD OBD2 GPS Tracker & Positioning Terminal with G-Sensor for 9 to 36V Vehicles Images
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