7 devices 2 brands

DMT Protocol (0x02 0x55 binary TCP)

DMT binary on Traccar TCP 5137: header 0x02 0x55, HELLO/DATA_RECORD/COMMIT, optional 64-byte records.

Connect your tracker

Enter the tracker IMEI first, then verify your email and continue setup.

Browse 7 supported devices

Quick answers

Stock Traccar port?

TCP 5137.

Frame header?

0x02 0x55 before type and LE length.

How differs from dmthttp?

Binary TCP on 5137 vs HTTP JSON on 5139.

DMT on Traccar TCP 5137 is the binary Digital Matter / DMT dialect. DmtProtocolDecoder speaks framed messages with header bytes 0x02 0x55, types MSG_HELLO 0x00, MSG_DATA_RECORD 0x04, MSG_COMMIT 0x05, MSG_DATA_RECORD_64 0x10, plus canned request/response pairs. Responses rebuild the same 0x02 0x55 header. Fixed-64 records pack LE time bitfields, lat/lon ×1e7, CPS speed, ADC1–5, accel, solarPower/tripHours extras.

Binary sibling of dmthttp

dmthttp on 5139 is the HTTP/JSON twin — never point a binary DMT unit at 5139 expecting IMEI/Records JSON.

Catalogue stance

Stock Traccar reference. positions_only.

Setup walkthrough

  1. 1

    Confirm binary firmware (not HTTP)

    Hex must show 02 55… — JSON posts belong on dmthttp 5139.

  2. 2

    Aim at TCP 5137

    Hostname/IP + 5137; reboot after APN save.

  3. 3

    Complete HELLO then DATA_RECORD

    0x00 hello expects 0x01 response before 0x04/0x10 payloads stick.

  4. 4

    Watch COMMIT 0x05 / 0x06

    Missing commit ack causes the device to replay records.

  5. 5

    Optional 64-byte path

    Type 0x10 uses fixed 64-byte slices — do not parse as variable TLV.

Setup

Public setup commands

Use these rows only after confirming the tracker password and SIM settings. Command families can differ between brands even when they use the same protocol.

Setup guidance

Connection supported

gps.traxelio.com:5137 4 example models
Dart G100 G52S G60

Traxelio can receive this model, but public SMS setup depends on SIM or model settings.

Reference

Configuration reference

Parameter Value
Port 5137

Telemetry fields

GPS Location Speed Altitude Heading / Direction Street Address GPS Accuracy Ignition Status Odometer / Mileage Battery Level

All Models

All DMT Devices (7)

Start with the strongest matches, then use pagination or brand pages for the full compatibility list.

Dart

Digital Matter

G100

Digital Matter

G52S

Digital Matter

G60

Digital Matter

Oyster

Digital Matter

Sting

Digital Matter

Sting

Sting

Compatible Brands

Brands Using DMT Protocol

Digital Matter

6 devices

Sting

1 device

Common troubleshooting

JSON posts hitting 5137

Wrong twin — move HTTP/JSON emitters to dmthttp 5139.

Hello loops

Ensure MSG_HELLO_RESPONSE 0x01 leaves the platform before chasing GPS.

Confused with Continental 5161

Continental uses MSG_STATUS 0x02 without 0x02 0x55 DMT headers.

Explore More

Other Protocols

Dmthttp

2 devices

Continental

1 device

Dolphin

1 device
View All Trackers

FAQ

Frequently Asked Questions

Are dmt and dmthttp interchangeable?

No. Same vendor family, different transports: binary 5137 vs HTTP JSON 5139.

Support tier?

positions_only.

UDP?

Stock DmtProtocol registers TCP only.

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