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

TTFF (Open Sky)

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

Communication Frequency

GL-GSM 850/900/1800/1900 MHz CN-GSM 900/1800 MHz LA-GSM 850/900/1800/1900 MHz EU-GSM 900/1800 MHz

LED Indication

GPS(Blue) / GPS(Yellow) / Power(Red)

Dimensions

L79mm*W33mm* H16mm

Weight

44g

Working Temperature

-20℃~+75℃

Product Features

Real-Time Tracking

Optimize and streamline your delivery process to drive efficiently.

Temperature/Humidity Sensor(Optional)

Optional peripherals to monitor temperature and humidity to gain visibility into your operations and help save money.

Low-Battery Alarm

Trigger an alarm when the device battery is about to run out of charge.

Light Sensitive Alarm

Get alarms when light changes suddenly

Multiple Operating Mode

Configurable working modes according to your actual demands. Mode 1: Real Time Tracking Mode 2: Smart Tracking Mode Mode 3: Power Saving Mode Mode 4: Alarm Tracking Mode

Remote OTA

Using OTA technology doesn’t just promote security updates to be sent to devices. It also encourages new functionality to be rolled out.

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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