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The Eelink protocol

The protocol of Eelink devices, a Chinese manufacturer from Shenzhen producing since 2004. Its catalogue runs from vehicle and motorcycle trackers to battery devices for assets and personal units.

It is spoken by the GPT and TK families — GPT06, GPT09, TK119, TK419. It is configured by text message, with the SIM's APN and the server address.

Which port it comes in onOur server listens for the Eelink protocol on port 6064. That is the port you set on the device, together with the server address. Point it somewhere else and the data still leaves, but the server cannot read it.
Careful with what other sites tell youIt is an all-rounder brand: it covers four different product types. That simplifies purchasing but does not guarantee even quality, so test the exact part number before adding it to your catalogue.

Build the configuration command

We do not have this protocol's commands yetWe would rather tell you than make them up. We only publish the ones we have checked against the manufacturer's manual or against a real device. If you have them confirmed, send them to us and we will add them.
Send us the commands

Devices that use it

EelinkSee this brand's devices

Receive this protocol on your own platform

No server to set up and nothing to program: the platform already reads this protocol. You add the brand and the domain.

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Back to the lookup

IMEI lookupDevice identification tool. We do not perform unlocking, carrier release or mobile blacklist checks, and we are not affiliated with the GSMA.

Where the data comes fromPublic mobile TAC database (MIT licence, Copyright (c) 2026 Moaz Ebrahem), TAC codes published by Teltonika on its official wiki, and the protocol observed on devices connected to the Appogio platform. We publish no full IMEI and no customer data.

Frequently asked questions

Which devices speak the Eelink protocol?

The GPT and TK families: GPT06, GPT09, TK119 and TK419. They range from vehicle and motorcycle trackers to battery units for assets.

Does the same configuration work for all of them?

The way you configure it does — APN and server address by text message — but what each part number carries changes. Ask for the exact model.

Can I change the protocol?

No. It comes from the factory; what you configure is which server and port it reports to.