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Understanding the Xexun Protocol: A Guide to GPS Tracking Standards
In the world of GPS tracking, the Xexun protocol is one of the most widely used communication standards. Originally developed by Shenzhen Xexun Technology, it has become a “de facto” standard for many personal and vehicle trackers, often emulated by various manufacturers due to its simplicity and effectiveness.
What is the Xexun Protocol?
The protocol defines how a GPS tracker formats data (like latitude, longitude, speed, and battery status) before sending it to a server via GPRS or SMS. It is popular because it uses a straightforward, ASCII-based comma-separated format that is easy for developers to parse and integrate into tracking platforms.
Product Line Comparison
The list of devices you provided represents various generations of hardware using this protocol. Here is how they compare across the TK (Personal/Vehicle) and XT (Specialized) series:
| Model Series | Common Use Case | Key Features |
|---|---|---|
| TK101 / TK102 / TK103 | Personal & Basic Vehicle | Compact size, SOS button, SD card logging (on -2 models), and basic voice monitoring. |
| TK201 / TK202 / TK203 | Portable & Asset Tracking | Water-resistant designs, longer battery life, and magnetic mounts for quick attachment. |
| XT009 / XT011 | Advanced Vehicle Tracking | Hardwired installation, ignition detection, and remote fuel cutoff capabilities. |
| XT107 | Motorcycle / Small Vehicle | Ultra-slim design, low power consumption, and vibration alerts. |
Overview of TK Series GPS Trackers: TK101, TK102, and TK103
The TK series represents some of the most popular and cost-effective GPS tracking solutions worldwide. Operating on GSM/GPRS networks and GPS satellite systems, these devices provide real-time location data via SMS or specialized web platforms.
1. TK101: The Personal Tracker
The TK101 is primarily designed for personal safety and asset monitoring. It is a lightweight, pocket-sized device.
- Best For: Tracking children, elderly family members, or high-value small assets.
- Key Features: It typically features a long-lasting rechargeable battery and a built-in microphone for basic voice monitoring.
- Functionality: It provides location updates via SMS with a Google Maps link or through a GPRS-based mobile app.
2. TK102: The Versatile Mini Tracker
The TK102 is the most iconic “mini” tracker. Known for its compact square design, it is easily hidden.
- Best For: Short-term vehicle tracking, luggage, or pets.
- Key Features: It often includes an SD card slot to record location data when there is no GSM signal. It also has a built-in “SOS” button that sends an emergency alert to pre-configured numbers.
- Performance: It is highly portable but usually requires more frequent charging compared to hardwired vehicle models.
3. TK103: The Professional Vehicle Tracker
The TK103 is a heavy-duty unit designed for permanent installation inside cars, trucks, or motorcycles.
- Best For: Fleet management, anti-theft security, and logistics.
- Key Features:
- Remote Engine Cut-off: Can stop the vehicle’s fuel or power via a relay.
- External Antennas: Comes with high-gain GPS and GSM antennas for better signal reception in metal-heavy environments.
- ACC Detection: Notifies the owner the moment the ignition is turned on.
- Installation: Unlike the 101 and 102, this model requires wiring into the vehicle’s 12V/24V power system.
4. Technical Specifications & Core Functions
| Feature | Description |
|---|---|
| Real-Time Tracking | Get instant coordinates by calling the device or sending an SMS. |
| Geo-Fence | Set a virtual boundary; the device alerts you if it leaves the designated area. |
| Overspeed Alert | Sends a warning if the target exceeds a pre-set speed limit. |
| Voice Surveillance | Allows authorized users to listen to the surrounding environment. |
| Low Battery Alert | Notifies the user when the device needs charging or power. |
5. Operational Requirements
To use these devices effectively, you need:
A 2G GSM SIM Card: Most TK models operate on 2G frequencies. Ensure the SIM has the PIN code disabled.
SMS/Data Plan: Required for sending location links and uploading data to tracking servers.
Clear Sky View: For the most accurate GPS fix (usually within 5–10 meters), the device needs a clear line of sight to the sky.
Overview of TK Series GPS Trackers: TK201, TK202, and TK203
The TK Series GPS trackers (TK201, TK202, and TK203) are versatile, budget-friendly devices designed for real-time tracking of people, pets, and vehicles. They operate using a combination of GSM/GPRS cellular networks and GPS satellite positioning.
Common Features across the TK Series
- Live Tracking: Monitor movement via a web platform, mobile app, or by receiving Google Maps links via SMS.
- Geo-Fencing: Set virtual boundaries; the device sends an alert if it enters or exits a predefined area.
- Historical Route: Most platforms store up to 3-6 months of movement history.
- Multiple Alarms: Includes vibration/shock sensors, over-speed alerts, and low-battery notifications.
- Voice Monitoring: A built-in microphone allows authorized users to call the device and listen to the surroundings.
Model Comparison & Specifications
| Model | Primary Use Case | Key Design Feature | Battery Life (Standby) |
|---|---|---|---|
| TK201 | Pets & Children | Ultra-compact, lightweight, and often IP67 waterproof for outdoor use. | 2–5 days (approx. 1000mAh) |
| TK202 | Vehicle Tracking | Equipped with a strong magnet for easy attachment to car chassis or metal surfaces. | Up to 60–100 days (5000mAh+) |
| TK203 | Personal & Asset | Portable handheld design, often includes an SOS button for emergencies. | 3–7 days (approx. 800mAh) |
Setup Essentials
- SIM Card: Requires a standard 2G or 4G SIM card (depending on the specific version) with active SMS and Data plans. PIN codes must be disabled.
- Default Password: Almost all TK units ship with the default password 123456.
- APN Configuration: To see the device online, you must send an SMS command to set the Access Point Name (APN) of your local carrier.
- Sleep Modes: To save battery, these devices can be set to “Sleep by Shock” or “Sleep by Time,” where the GPS chip turns off when the object is stationary.
Overview of TK Series GPS Trackers: XT107, XT009 and XT011
The XT009 and XT011 are advanced vehicle and asset GPS trackers primarily manufactured by Xexun. While they share a similar compact form factor, they are designed with specific technical upgrades and use cases in mind.
- Xexun XT009: Compact Vehicle Tracker
The XT009 is a versatile, high-performance tracker designed for discreet installation in vehicles such as cars, motorcycles, and boats.
- Physical Design: Measures 73mm x 46mm x 24mm and weighs 50g, making it small enough to be easily hidden.
- Core Hardware: Features the SIRF3 (or updated SIRF4) GPS chipset with high sensitivity (-159dBm) for accurate positioning even in challenging urban environments.
- Power: Operates on an external DC supply (6–36V) and includes a 1000mAh–1200mAh internal backup battery that lasts for approximately 3 to 5 hours if main power is cut.
- Storage: Includes a built-in SD card slot to log GPRS data if the cellular signal is lost, ensuring no tracking points are missed.
- Key Functions:
- Remote Immobilization: Can remotely cut off fuel or electricity via an SMS command.
- Anti-Theft: Built-in shock sensor for vibration/crash alarms and ACC detection to monitor when the engine is started.
- Voice Monitoring: Includes a built-in microphone for authorized users to listen to the surrounding audio.
2. Xexun XT011: Specialized High-Sensitivity Tracker
The XT011 is often positioned as a refined version of the XT009, maintaining the same physical dimensions but offering targeted internal improvements.
- Enhanced Chipset: Utilizes the SIRF4 chip, which provides faster “Time to First Fix” (TTFF) and better satellite signal retention.
- Dimensions: It shares the identical 73mm x 46mm x 24mm casing and 50g weight of the XT009, ensuring parts and mounting accessories are cross-compatible.
- Network: Operates on quad-band GSM/GPRS (850/900/1800/1900MHz), allowing for global use.
- Battery: Standard internal battery capacity is 1000mAh, supporting roughly 120 hours of standby time.
Pro Tip: To track these devices in real-time, you must send an SMS command (typically
adminip123456 [IP] [Port]) to point the tracker to a web-based platform.3. Xexun XT107:
The TK Series GPS Trackers, specifically the XT107 model (often manufactured by Xexun or TK-STAR), are versatile 2G/4G GSM/GPRS devices designed for real-time vehicle monitoring, personal safety, and asset tracking.
Key Features of the XT107
The XT107 is characterized by its compact, often plug-and-play design (OBD-II version) or hardwired installation for permanent vehicle use.
- Real-Time Tracking: Provides precise location data accessible via SMS, a web platform, or mobile apps like “WINNES GPS” or “dagps”.
- Anti-Theft Alarms: Includes a shaking sensor, movement alert, and overspeed alarm to notify users of unauthorized activity.
- Geofencing: Allows users to set virtual boundaries and receive instant alerts if the tracker enters or exits these zones.
- Emergency SOS: Features a dedicated Panic button to send emergency distress signals with location coordinates to authorized numbers.
- Remote Control: Advanced versions (hardwired) can remotely cut off oil or power systems to immobilize a stolen vehicle.
Technical Specifications
| Feature | Details |
|---|---|
| Network | GSM/GPRS (supporting 850/900/1800/1900 MHz bands) |
| Positioning | GPS + LBS (Location Based Service) for redundancy when satellite signal is weak |
| Accuracy | Typically between 5 to 10 meters |
| Battery | Varies by sub-model; typically includes a 3.7V 350mAh or 1500mAh Li-ion backup battery |
| Durability | Rugged housing; some variants are rated IP65 or IP67 for water and dust resistance |
Common Operational Commands
Users manage the XT107 primarily through SMS commands:
- Position Request: Call the tracker or send
smslink123456to receive a Google Maps link. - Initialization: Send
begin123456to restore factory settings. - Set APN: Required for GPRS data; command format
apn123456 [APN name]. - Change Password: Send
password[old] [new](e.g.,password123456 654321).
- Position Request: Call the tracker or send
Note on Usage: To function, the device requires a SIM card with an active data plan and disabled PIN code. For optimal signal, ensure the device is placed with a clear view of the sky.
Why Choose Xexun-Compatible Devices?
Wide Compatibility: Almost every major GPS tracking software supports the Xexun protocol.
Reliability: The protocol handles weak signal areas well by buffering data.
Versatility: Suitable for everything from tracking a pet to managing a commercial fleet.
Whether you are using the classic TK102 for personal safety or the XT009 for fleet management, understanding the protocol ensures your hardware and software communicate seamlessly.
