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

Communication
Communication Frequency GL-GSM 850/900/1800/1900 MHz CN-GSM 900/1800 MHz EU-GSM 900/1800 MHz LA-GSM 850/900/1800/1900 MHz
Operating
Working Temperature -20℃~+75℃
LED Indication GPS(Blue) / GPS(Yellow) / Power(Red)
Physical
Dimensions L79mm*W33mm* H16mm
Weight 44g
Interface
LED Indication GPS(Blue) / GPS(Yellow) / Power(Red)
Other
TTFF (Open Sky) Avg.hot start <1s Avg.cold start <32s

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

CUSTOMER REVIEWS

Sophia L., Supply Chain Director
Sophia L., Supply Chain Director@sophia_l
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We've been using SEEWORLD's GPS trackers for our delivery fleet across rural areas in Texas, and the accuracy has been outstanding. Even in areas with weak signals, the device still sends location updates reliably. The long battery life means we don’t have to worry about frequent charging. Highly recommended for any logistics company!
Daniel R., Operations Manager
Daniel R., Operations Manager@daniel_r
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Our company transports temperature-sensitive medical supplies, and the W18L GPS tracker has been a life-saver. The built-in temperature and light sensors give us peace of mind, and alerts help us react quickly if anything goes wrong. Installation was simple and the mobile app is user-friendly.
James T., Construction Project Lead
James T., Construction Project Lead@james_t
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I was impressed with the transparent pricing and how easy it was to set up the tracker using Bluetooth. The smart tracking mode helps extend battery life without sacrificing accuracy. It’s waterproof, durable, and works perfectly for managing our equipment across multiple job sites.
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Note: We do not support tracking of people, bags, wallets, phones, or computers.
SEEWORLD provides B2B solutions only — not for individual or personal use.