Advanced GPS Tracker GT21N | GreatWill

Great Will GT21N is a simple, miniature 4G vehicle-mounted positioning terminal that supports a wide voltage input range of 9 to 90V and can be widely used for monitoring the location of vehicles such as cars, trucks, motorcycles, and electric vehicles. It has a built-in 25*25mm large-size satellite antenna, which provides excellent satellite search capabilities, strong signal reception, and accurate positioning. It supports TTL serial port communication and can communicate with various types of peripherals.

  • 9-90V DC
  • Bluetooth Communication (optional) & TTL serial port (optional)
  • Driving behavior analysis

Universal Vehicles Apply,High Accuracy Positioning--GT21N

GT21N is a 4G full Netcom vehicle positioning terminal. It integrates CAT1 network wirelesscommunication technology, supports scheduled tracking, historical tracking, and hasmultiple&advanced alarms,include harsh breaking, sudden acceleration or sharp turningoverspeed,collision alarms,ect.Other customised alarms and features are available upon request

A car speeding on a winding road, illustrating the driving behavior analysis feature of the GT21N tracker.

Driving Behavior Analysis

Monitors vehicle behaviors such as rapid acceleration, deceleration, and speeding during driving. This helps businesses or vehicle owners manage and train drivers, improving driving safety and fuel economy

Automatic Arming/Disarming

GPS tracker uses ACC detection to determine vehicle status. When the vehicle is turned off, the ACC signal is turned off, and the tracker may automatically enter the armed state. During this time, if the vehicle is vibrated or illegally moved, the tracker will trigger a vibration alarm or displacement alarm. When the vehicle is started, the ACC signal is turned on, and the tracker automatically disarms, resuming normal positioning and tracking functions

A car protected by a 24-hour digital shield, representing the GT21N's smart automatic arming security feature.
The GT21N tracker demonstrating its optional Bluetooth connectivity with a sensor and smartphone over a 20-meter range.

Optional Features - Bluetooth Communication / TTL Serial Port

Bluetooth communication is used for short-range data transmission with mobile phones or other devices, such as setting device parameters and downloading positioning data. It can also be used to connect Bluetooth sensors to expand the tracker's functionality. The TTL serial port is a commonly used serial communication interface for short-range data transmission between devices. For example, it can be connected to the vehicle's OBD port to obtain additional vehicle data or connect to other sensors for more extensive functionality

9-90V Wide Voltage Range

The wide voltage range allows the tracker to adapt to the power systems of various vehicles, eliminating the need to worry about voltage mismatches and improving the device's versatility and stability

The GT21N tracker showcasing its 9-90V wide voltage compatibility for various vehicles, including cars, vans, and trucks.

Technical Specifications

Specification GT21N
Dimensions 74(L) * 30(W) * 13(H) mm
Weight 30g
Working Voltage DC 9V - 90V
Working Temperature
-20°C to +70°C / -4°F to +158°F
Standby Battery 55mAh / 3.7V Industrial Lithium Polymer
Network Frequency
4G LTE Cat-1
LTE Bands FDD: B1/B3/B5/B8; TDD: B34/B38/B39/B40/B41
Positioning Way
GPS / BDS
Location Accuracy < 10 meters (Open Sky)
Tracking Sensitivity
-165dBm
Communication Module AirM2M Air780E
Standby Current
≤5mA

Main Features

Real-time Tracking

Geo Fence

ACC Detection

Blind Spot Storage

DC 9-90V

GT21N Advanced Vehicle Tracker Applicable Scenarios

Vehicle Ant Theft Prevention Management

Vehicle Ant Theft Prevention Management

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Logistics And Transportation

Logistics And Transportation

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Car Rental

Car Rental

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Global Multi-Version GT21N for Easy Deployment

We offer advanced vehicle tracking solutions for global clients, supporting OEM/ODM customization. The driving behavior data from the GT21N makes it an ideal choice for insurance companies (UBI), fleet operators, and car rental businesses to effectively reduce risks and improve management efficiency.

After-sales service and Warranty
  • Provide after-sales technical support and product testing
  • Continuously adjust products to suit local conditions and vehicles
  • Warranty period up to 3 years
  • Sample delivery time is approximately 3-5 days.
  • Large-volume orders take over 7 days.
  • The device/platform software/SIM/IoT card undergo engineering inspection and testing before packaging and shipment.
  • Multiple shipping methods supported.
  1. Vibration Alarm: The vibration alarm can be set to armed via the platform or mobile app. The alarm has three levels, with level 1 being the most sensitive. In armed mode, even the slightest vibration from the vehicle will trigger a text message notification, alerting the owner of any unusual contact or movement.
  2. Displacement Alarm: When the vehicle is parked and in armed mode, any deviation from its intended route between points triggers a displacement alarm, sending an alarm signal to the GPS monitoring platform. This helps the owner detect any unusual vehicle movement and prevent theft or unauthorized removal.
  3. Overspeed Alarm: The accompanying backend management system allows you to set speed limit reminders. If the vehicle exceeds the speed limit, the driver will be prompted to slow down and receive an alert to the owner, ensuring driving safety and helping the owner monitor and manage the vehicle's status.
  4. Low Battery Alert: When the device battery level drops below 10%, a low battery alarm is triggered, sending a signal to the GPS monitoring system to remind the user to charge or replace the device immediately to prevent positioning failure due to battery depletion.
  5. Multi-positioning: Utilizing the advanced GPS + Beidou dual-satellite positioning system, this system ensures accurate positioning in various environments. Additionally, some models may support Wi-Fi positioning and LBS base station positioning. For example, the GF21 combines GSM/GPRS networks with GPS satellite systems to achieve precise positioning and real-time monitoring of remote targets via SMS or the internet, enabling accurate location information in both urban and remote areas.

Contact Information

We will contact you within 1 working day, please pay attention to the email with the suffix "@greatwill.com"

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Contact Information

We will contact you within 1 working day, please pay attention to the email with the suffix “@greatwill.com”

询盘表单