TopFlyTech T8603

TopFlyTech T8603 is a very simple OBDII-type tracker. It does not read any OBD II information, but it uses power supply from OBD II port. No special skills required for the installation - just plug it to the car diagnostic port.

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Location and tracking

T8603 model is embedded with GPS and doesn’t have support of GLONASS or alternative systems. It neither supports Assisted GPS technology. As the back-up, when no satellites signals are available, it uses Cell ID location (also known as LBS-tracking).

OBDII data reading

T8603 is a simple tracker. It only gets power supply from OBDII port, but it does not read any data from vehicle CAN bus or K-Line. With T8603 you will be unable to get telemetry from onboard diagnostic system, сheck engine lamp (MIL) or DTC codes.

Mobile networks

With Quad-band GSM module T8603 can be operated in 2G networks all over the world.

Power supply

T8603 uses OBD II Connector Type B (9 of 16 pins used) and voltage range 6-36V, which makes possible to install T8603 both on cars and trucks.

T8603 also features a built-in rechargeable backup battery. When fully charged it ensures about 1-2 hours of device operation (in normal conditions).

When being unplugged from the OBDII socket the device sends notification to server.

Remote management

T8603 tracker can be fully controlled over GPRS, including configuration of tracking modes. There is also a wide list of SMS commands in a human-friendly format, on which device always replies back.

It supports remote configuration of APN settings, server address and port by SMS.

LED Indication

T8603 has two LEDs

  • Red LED indicates GSM/GPRS mode
  • Blue LED indicates GPS reception

The light goes out automatically in five minutes after the device is plugged into OBDII port.

Additional notes

In some cars it’s not possible to read the Ignition state from the OBDII port. Then T8603 uses proprietary algorithm based on multiple parameters to evaluate the Ignition is ON with 98% accuracy. And the same algorithm it uses to detect the car engine is OFF and reduces the power consumption.

Compared to other OBDII trackers, T8603 seems a little longer. It might cause the device don’t fit the interior details in some cars. To overcome this problem an OBDII extension cable (optional accessory) can be used.

To switch device off (even with charged battery) just remove the SIM card. The device will switch off in 5-10 seconds.

Integración de Servidor

Servidor de la (
Servidor de la (
Puerto de servidor47744

Información general

InstalaciónNo necesesario
Factor de forma especialOBDII Dongle


Peso60 g (2.12 oz.)
Tamaño63x47x26.5 mm (2.48x1.85x1.04 in)

Localización GNSS

Antena interna (GNSS)
Antena externa (GNSS)No


Tipo de la red del celularGSM Quad Band
Antena interna (Conexión)
Antena externa (Conexión)No
Generación de red celular2G


Entrada ACC/ignisión
Entradas digitales

Características de hardware

Capacidad de batería280 mAh
Batería integrada
El botón de pánicoNo
Sensor de corte
Memoria no volátilNo

Hardware extras

Lectura del sensor del nivel de combustibleNo
Lectura del identificador del conductorNo
Lectura del sensor de temperaturaNo
Control especial del bloqueo del motor

Características de rastreo

Modos de rastreoContinuo
Consumo inteligente de bateríaNo
ECO drivingNo

Monitoreo de eventos

Poca batería
Corte de alimentación externa
Dispositivo on/off


Nivel de señal GNSS
Satélites GNSS fijados
On request
Voltaje de alimentación externaNo


Tipo de lector CAN/OBDIINo
Lámpara \"Check Engine\"No
Lectura de códigos DTCNo

Administración remota

La conexión con servidor por SMS
Configuración remota de dispositivoSí (por GPRS), Sí
Formato de mensajes para intercambioBINARY
Actualización de firmware OTANo
Localización por LBS preferente a GPRSNo
Localización forzada de GNSS por SMSNo


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