Name: GT903K iButton GPS Tracker | Reliable OEM Factory RFID 4G
Brand: GreatWill

iButton GPS Tracker GT903K | GreatWill

The Great Will GT903K features a highly integrated design with a built-in antenna, balancing easy installation with stable performance. Its wide 9-90V voltage range accommodates a variety of scenarios. Its powerful combination of GPS, Beidou, and LBS positioning ensures accurate real-time tracking and clear historical tracking playback. It also features a built-in “safety net” that instantly alerts users to vibration, speeding, and entering or exiting electronic fences. A built-in backup battery provides immediate warning of unauthorized device removal. Even remote power and oil cutoffs via relays are easily activated, providing comprehensive asset security.

Remote Power and Oil Cut-off

4G+2G Full Network Access

GPS+Beidou+LBS Multiple Positioning

Real-Time Location Tracking

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RFID Driver Identification, Wide-Voltage Tracking — GT903K

GT903K is a 4G wired GPS tracker designed for vehicle and fleet management. It combines multi-mode positioning, RFID/iButton-based driver identification, a wide 9–90V input range, multiple alarms and relay expansion for security and operational control.

Wide Voltage Compatibility

DC 9–90V input supports a broad range of passenger vehicles, logistics trucks and industrial equipment without requiring an additional voltage converter in typical installations.

Multi-Dimensional Alarm System

GT903K supports vibration, overspeed and geo-fence alarms to provide timely warnings for abnormal movement, speed violations and boundary events.

Built-in Backup Battery

A 300mAh backup battery helps maintain positioning and alarm capability when external vehicle power is interrupted, while low-power operating modes reduce standby consumption.

Relay Expansion Connection

External relay support enables compatible remote control workflows such as vehicle immobilization or linked alarm responses, depending on installation and platform configuration.

Technical Specifications

Specification	GT903K
Network	LTE-FDD / GSM
Working Voltage	DC 9V–90V
Dimensions	78mm × 34mm × 16mm
Location Accuracy	<10 Meters
Positioning	GPS + BDS + GLONASS + LBS
Standby Current	≤5mA
Backup Battery	300mAh / 3.7V
Working Temperature	-20°C to +60°C (-4°F to 140°F)
Storage Temperature	-40°C to +70°C (-40°F to 158°F)
G-Sensor	Built-in 3-axis
Data Buffering	Up to 4000 entries
Protocol	GT06 Protocol

Main Features

Real-Time Tracking

Remote Cut-Off

RFID Identification

Multiple Alarms

DC 9–90V

GT903K Applicable Scenarios

Cargo Tracking

Logistics Freight Vehicles

Rental Vehicle Management

Bulk GPS Tracking Devices Ready-to-Ship

GreatWill supplies GT903K wired GPS trackers for fleet, logistics, rental and access-control projects, with OEM/ODM options for regional network and integration requirements.

After-sales technical support and product testing are available.
Configurations can be adjusted for local networks, vehicles and project requirements.
Warranty coverage can be up to 3 years depending on the project and commercial agreement.

Sample delivery is typically about 3–5 days.
Large-volume orders generally require more than 7 days depending on quantity and customization.
Devices, platform software and SIM/IoT-card configurations are inspected before shipment.
Multiple shipping methods are supported.

RFID/iButton identification links vehicle location with driver or operator identity for more controlled fleet workflows.
DC 9–90V input and a backup battery support a wide range of vehicle and equipment installations.
Vibration, overspeed and geo-fence alarms can be combined with relay control for a warning-and-response workflow.
Positioning, alarm and identification records can be synchronized with compatible management platforms for traceability.