Skip to content 
Meiligao Compatibility Guide for Protocol 5009
If you are working with GPS tracking servers like Traccar, Gurtam, or GPSGate, you have likely encountered the Meiligao protocol. Often referred to under the brand name Meitrack, this protocol is one of the most stable and widely used communication standards in the telematics industry.
In this guide, we will break down what makes this protocol unique and provide a comprehensive compatibility list for devices using the Meiligao standard on Port 5009.
What is the Meiligao Protocol?
The Meiligao protocol is a communication language used by GPS trackers to send data (like latitude, longitude, speed, and ignition status) to a central server.
Key Features:
- TCP/UDP Support: While most configurations use TCP for reliable data delivery, the protocol is flexible.
- Port 5009: By default, most tracking platforms assign port 5009 to handle the Meiligao/Meitrack data stream.
- Rich Telematics: It supports advanced data packets, including fuel monitoring, camera snapshots (in OCT series), and RFID driver identification.
Supported Devices in the Tracking Protocol 5009
| Category | Models | Key Features & Usage |
|---|---|---|
| Personal & Portable | GT30i, GT60, GT30, GT30X, PT01, PT03, PT60, PT30, PT99, PG99 | Small form factor, internal battery, SOS emergency button. Used for people, pets, and assets. |
| Standard Vehicle | VT300, VT310, VT310N, VT400, VT600, MT01, MT02, GSY007, T200, CT01, CT03 | Basic fleet tracking, ignition status, engine cut-off, and fuel monitoring via analog inputs. |
| Advanced Fleet | VT900, VT1000, OCT600, OCT800, OCT900, OCT900-R, OCT800-D, OCT600-CAM, OCT600-SG3, OST800 | Supports external accessories: Cameras (OCT600-CAM), CANBus interfaces, and RS232 sensors. |
| OBDII & Plug-Play | TK228 (Topten), CT04, CT04-R, CT04-X | No professional installation required. Connects directly to vehicle diagnostic port. |
| Topten Series | MT05, MT05S, LT02, LT03, GT08, GT08S, GT48, MT35, TK510, TK208, TK208S, TK218, TK228, TK428 | Meiligao-compatible hardware often used for budget-friendly commercial fleet solutions. |
| Legacy & Specialized | PST-AVL01, AVL-011, P008, PT300X, TZ-GT01, GT-110P, GT-110K, GT-110M, GT-110ES, GT-110ZS | Older generation AVL systems and industrial-specific regional variants. |
Protocol Note: These devices communicate using $$ (Device to Server) and @@ (Server to Device) packet headers over TCP/UDP.
Choosing the Right Hardware
When selecting a device from this list, consider the application:
- Personal Tracking: The GT30 or MT series are compact and ideal for people or small assets.
- Vehicle Security: The VT and OCT series offer IO ports for engine cut-off and SOS buttons.
- OBDII Plug & Play: The TK228 is perfect for quick installation via the vehicle’s diagnostic port.
Integration Tip
When configuring your device, ensure the APN is set correctly for your SIM card provider, and point the IP address to your server using port 5009. If the device shows as “Online” but no location appears, check if the device has a clear line of sight to the sky to acquire a GPS fix.
Essential SMS Commands for Meiligao Protocol Devices
Most Meiligao/Meitrack devices use the default password 0000. If you have changed the password, replace
0000 with your custom code.1. Set Server IP and Port
This command tells the tracker where to send the data (your server IP and Port 5009).
- Command:
0000,A21,1,Server_IP,Port,, - Example (IP):
0000,A21,1,123.123.123.123,5009,, - Example (Domain):
0000,A21,1,tracking.yourserver.com,5009,,
2. Configure APN (Access Point Name)
Required for the device to connect to the mobile internet provider.
- Command:
0000,A22,APN_Name,User,Password - Example:
0000,A22,internet,,(Leave user/pass blank if not required by your provider)
3. Set Data Upload Interval
Defines how often the device sends its location (in seconds).
- Command:
0000,A12,Interval,, - Example (60 seconds):
0000,A12,60,,
4. Check Current Status
To verify if your settings (IP, APN, Signal) are correct, send this query command:
- Command:
0000,A00 - Response: The device will reply with a string containing its current coordinates, GSM signal, and battery level.
Important Formatting Note
The commas in these commands are critical. Even if a field is empty (like a password), you must include the comma as a placeholder, or the device will reject the command.
