D21L - 4G 8-Wire GPS Tracker for Fleet Vehicle

D21L - 4G 8-Wire GPS Tracker for Fleet Vehicle

The SEEWORLD D21L 4G 8-wire GPS Tracker is a sophisticated tracking device that seamlessly integrates into various automotive sectors, including 4S car dealerships, logistics, personal vehicle management, and truck fleet management. This tracker offers real-time tracking for up-to-the-minute vehicle location, complemented by history playback for retrospective route and usage analysis.

It enhances vehicle security through a remote cut-off feature, allowing for the deactivation of the vehicle’s power system in case of theft. The device’s ACC detection capability alerts users to ignition status changes, adding an extra layer of security.

Additionally, the vibration alarm is a crucial safety feature, responding to unexpected movements or impacts. Its remote OTA functionality ensures the tracker is always up-to-date with the latest software upgrades, maintaining its high performance without the need for direct physical access. The SEEWORLD D21L is an all-encompassing solution for advanced vehicle tracking and management needs.

Product Parameters

Additional information

Voltaje/Corriente de Trabajo



LTE-FDD B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28/B66
LTE-TDD B34/B38/B39/B40/B41
GSM 850/900/1800/1900 MHz

LTE-TDD B34/B38/B39/B40/B41
GSM 900/1800 MHz

LTE-FDD B1/B3/B5/B7/B8/B20
GSM 900/1800 MHz

América Latina
LTE-FDD B1/B2/B3/B4/B5/B7/B8/B28/B66
GSM 850/900/1800/1900 MHz



Precisión de Posicionamiento

<10 meters

Rango de Voltaje de Entrada Soportado


TTFF (Cielo Abierto)

Avg.hot start <1s
Avg.cold start <32s

Temperatura de Trabajo


Cantidad de Almacenamiento de Datos


Tamaño del Dispositivo

L79mm * W33mm * H16mm



Product Functions

Remote Cut-Off (Fuel/Power)

Immobilize a vehicle by cutting off its power source/fuel supply via an installed relay.

SOS Alarm

An SOS alert can be sent when the driver encounters an accident or an abnormal situation.

History Trace Playback

Can check the history of 120 days, such as history report, alarm report, speeding report, etc.

Vibration Alarm

With built-in vibration sensor, an alarm will be sent immediately when the vehicle has abnormal vibration.

Real-time Tracking

Update position every 10 seconds with continuous tracking.

ACC Detection

The vehicle is connected to the ACC line and users can view the vehicle status on the system.

Product Applications