1. Introduction
The Trackerking J16 4G Mini GPS Tracker is a versatile and reliable device designed for real-time tracking of vehicles, motorcycles, and bikes. It offers advanced features such as remote engine cut-off, multiple anti-theft alarms, and historical track playback, ensuring enhanced security and monitoring capabilities. This manual provides detailed instructions for the proper installation, operation, and maintenance of your J16 GPS tracker.
2. Product Overview
2.1. Features
- Real-time Positioning: Utilizes GSM, GPS, LBS, AGPS, and Beidou for accurate real-time location tracking.
- 4G+2G Network Support: Ensures broad compatibility and reliable connectivity.
- Remote Engine Cut-off: Ability to remotely cut off or restore the fuel circuit to prevent theft or control the vehicle.
- Multiple Anti-theft Alarms: Includes vibration alarm, displacement alarm, engine start and flameout alarm, geo-fence alarm, power failure alarm, and tow alarm.
- Historical Track Playback: Server stores data for up to 180 days for reviewing past routes.
- ACC Detection: Monitors ignition status.
- Virtual Ignition Detection: Detects unauthorized ignition attempts.
- Remote OTA: Supports over-the-air updates for hardware programs.
- Free Platform & APP: Lifetime free access to the Trackerking platform (www.trackerking.net) and mobile application.
- Multi-device Management: Create group accounts for free to manage multiple vehicles simultaneously.
2.2. Components
The standard package includes:
- J16 GPS Tracker Device
- Power Wire Harness
- 150mAh Internal Battery (may be integrated or separate depending on variant)
- Relay (for engine cut-off functionality, if selected)


3. Specifications
| Attribute | Value |
|---|---|
| Model Name | J16 |
| Brand Name | Tracker King |
| GPS Type | GPS Tracker |
| Network | 4G+2G |
| GPS Module | Yes |
| Positioning Mode | GSM, GPS, LBS, AGPS, Beidou, Real-Time Positioning |
| Voltage | 24V |
| Battery Life | 20 to 29 Hours (internal battery) |
| Screen Size | No screen |
| Special Features | Internet Connected |
| Functions | ANTI-SHOCK, street view, ACC Detection, Wheel Path Playback |
| Free Platform | www.trackerking.net |
| Free APP | Trackerking |
| Package Length | 15 cm |
| Package Width | 11 cm |
| Package Height | 2 cm |
| Package Weight | 0.08 kg |
4. Setup Instructions
4.1. SIM Card Installation
- Open the device casing carefully to access the SIM card slot.
- Insert a 4G-compatible SIM card (not included) into the designated slot. Ensure the SIM card has an active data plan and is correctly oriented.
- Close the device casing securely.

4.2. Wiring and Installation
Connect the tracker to your vehicle's power supply according to the wiring diagram. Ensure all connections are secure and insulated to prevent short circuits.

If your model includes the engine cut-off feature, connect the relay as shown in the diagram below. This allows for remote control of the vehicle's fuel/electricity supply.

4.3. Platform and App Setup
- Download the App: Search for "Trackerking" in your mobile app store (App Store for iOS or Google Play for Android) and install it.
- Access the Web Platform: Visit www.trackerking.net on your computer.
- Login: Use the provided account credentials to log in. For demonstration purposes, you can use:
- Demo account:
demo03 - Demo password:
123456
- Demo account:

4.4. SMS Commands for Configuration
After installing the SIM card and wiring the device, you may need to configure it using SMS commands. Send these commands from a registered phone number to the SIM card number in the tracker.

- Server Parameter Setting:
Command:SERVER,0,154.23.114.25,8011,0# - APN Setting:
The APN (Access Point Name) settings are crucial for the tracker to connect to the internet. You will need your SIM card provider's APN information.- Command 1 (No username/password):
Format:APN,APN information,,#
Example:APN,internet4gd.gdsp,,#(whereinternet4gd.gdspis the APN) - Command 2 (With username/password):
Format:APN,APN information,user name,password#
Example:APN,cmnet,internet,cmnet#(wherecmnetis APN,internetis username,cmnetis password)
- Command 1 (No username/password):
5. Operating Instructions
5.1. Real-time Tracking
Once configured, log into the Trackerking app or web platform to view your device's real-time location on Google Maps. The minimum data upload interval is 5 seconds, providing near-instant updates.

5.2. Historical Track Playback
The Trackerking platform allows you to review the historical routes of your device for up to 180 days. Access this feature through the app or web interface to analyze past movements.

5.3. Remote Engine Cut-off
In case of theft or unauthorized use, you can remotely cut off the engine's fuel/electricity supply. This function is activated by sending an SMS command to the tracker.
- Command to cut oil/power:
Relay,1# - Command to recover oil/power:
Relay,0#

5.4. Alarm Functions
The J16 tracker provides various alarm notifications to keep you informed about your vehicle's status and potential security breaches.


- Vibration Alarm: Notifies you if the device detects abnormal vibration.
- Displacement Alarm: Alerts if the vehicle moves from its parked location without ignition.
- Engine Start/Flameout Alarm: Informs you when the engine is started or turned off.
- Geo-fence Alarm: Triggers an alert if the vehicle enters or exits a predefined geographical area.
- Power Failure Alarm: Activates if the main power supply to the tracker is disconnected.
- Tow Alarm: Detects if the vehicle is being towed.
5.5. Multi-device Management
For fleet managers or users with multiple trackers, a free group account can be created. This allows you to view and manage all your devices on a single app or web interface simultaneously.

5.6. Statistics Reports
The platform provides comprehensive statistics reports, including moving data, mileage, and alarm history, allowing for detailed analysis of vehicle usage.

6. Maintenance
- Keep Dry: Ensure the device is kept dry and away from moisture to prevent internal damage.
- Clean Regularly: Use a soft, dry cloth to clean the device. Avoid using harsh chemicals or solvents.
- Check Connections: Periodically inspect all wiring connections to ensure they are secure and free from corrosion.
- Software Updates: Keep the Trackerking app and device firmware updated to ensure optimal performance and access to new features.
7. Troubleshooting
- Device Not Powering On:
Check the power connections and ensure the vehicle's battery is charged. Verify the internal battery of the tracker is also charged. - No GPS Signal:
Ensure the device is installed in a location with a clear view of the sky, away from metal obstructions that might block GPS signals. - No Data Upload / Offline Status:
- Verify the SIM card is correctly inserted and has an active data plan.
- Check the APN settings using the SMS command instructions (Section 4.4). Incorrect APN settings are a common cause of connectivity issues.
- Ensure your SIM card is compatible with 4G+2G networks in your region.
- Cannot Log In to App/Platform:
- Double-check your username and password.
- Ensure your device has internet connectivity (see 'No Data Upload' above).
- If you are using a demo account, remember it is for demonstration only. For your personal device, use the credentials provided with your tracker.
- Platform Access Expiration:
The Trackerking platform (www.trackerking.net) and mobile application are provided free for life. If you encounter messages about expiration, please contact customer support with your device ID for assistance. - Remote Engine Cut-off Not Working:
Ensure the relay is correctly wired according to the diagram (Figure 5) and the device has a stable network connection to receive SMS commands.
8. User Tips
- SIM Card Compatibility: Always use a 4G-compatible SIM card with an active data plan. Some carriers (like T-Mobile) may require specific APN settings; consult your carrier for details if you experience connectivity issues.
- No SIM Card Included: The tracker does not come with a SIM card. You will need to purchase one separately from your local mobile network provider.
- Platform Usage: The Trackerking platform and app are designed to work exclusively with Trackerking devices. It cannot be used with other tracking platforms.
- Power Consumption: While the device has an internal battery, it is primarily designed for continuous power from the vehicle. Ensure stable power supply for uninterrupted tracking.
- Group Account for Fleets: If you manage multiple vehicles, take advantage of the free group account feature to streamline monitoring. Contact support to set this up.
9. Warranty and Support
For any technical assistance, warranty claims, or support inquiries regarding your Trackerking J16 Mini GPS Tracker, please visit our official platform at www.trackerking.net or contact our customer service team through the contact information provided on the website.





