GV350MG

Queclink GV350MG — LTE Cat M1 Advanced Vehicle Tracker with CAN, J1939 and Dual RS232

The Queclink GV350MG is the LTE Cat M1 and NB-IoT evolution of Queclink's GV300 — one of the most successful and widely deployed vehicle trackers in Queclink's history. Building on the proven GV300 platform and incorporating direct customer feedback, the GV350MG adds global LTE Cat M1 and NB1 connectivity via a unique antenna solution while retaining everything that made the GV300 a global market leader — built-in CAN 2.0A/B, SAE J1939, dual RS232 serial ports, 1-Wire temperature interface and a rich I/O set for diverse accessory support.

One of the GV350MG's standout capabilities is its customisable CAN interface — the CAN protocol can be tailored to meet specific requirements from customers, enabling integration with specialist vehicles including tractors, agricultural machinery and other equipment with unique CAN implementations. Heavy trucks supporting J1939 FMS can be fully integrated with the GV350MG alongside accessories such as dual fuel sensors, Garmin FMI navigation, cameras and Queclink I/O extenders — making it one of the most flexible professional vehicle trackers available.

As an authorised Queclink distributor in the UK, Tracking Hardware UK ships the GV350MG directly from our London warehouse — with trade pricing available for telematics service providers, fleet operators and resellers.

Key Features

• Global LTE Cat M1 and NB1 with 2G fallback — unique antenna solution ensures global LTE Cat M1 and NB1 coverage with automatic 2G fallback, making the GV350MG future-proof for customers transitioning from 2G to LTE across the lifecycle of their service Built-in CAN 2.0A/B and SAE

• J1939 — reads vehicle data from light commercial vehicles and heavy trucks via CAN 2.0 and J1939 FMS without interfering with vehicle bus wiring

• Customisable CAN interface — the CAN protocol can be customised for specific customer requirements, enabling integration with tractors, specialist agricultural machinery and other vehicles with unique CAN implementations

• Dual RS232 serial ports — two RS232 ports via 16-pin Molex connector for connecting dual fuel sensors, Garmin FMI navigation, cameras, RFID readers, Queclink I/O extenders and other accessories simultaneously

• 1-Wire interface — connects temperature sensors for cold chain and refrigerated transport monitoring and supports driver identification via iButton

• BLE connectivity — optional wireless sensor connectivity for temperature, humidity, movement and other BLE accessories

• Multiple digital and analogue I/Os — 1 positive trigger input for ignition, 4 negative trigger inputs, 1 configurable special I/O as 0V-32V analogue input or open drain digital output and additional outputs for accessory and immobiliser control

• Remote immobiliser — digital output for remote vehicle disabling via your fleet management platform

• Geofencing — up to 20 circular and 20 polygonal configurable geofence zones with automatic alerts

• Crash and tow detection — built-in accelerometer detects impact events and triggers alerts if the vehicle is moved without ignition

• Driving behaviour monitoring — tracks harsh braking, acceleration and cornering for driver scoring and eco-driving programmes

• Dual fuel sensor support — RS232 connectivity supports dual LLS fuel level sensors for accurate fuel monitoring on trucks and commercial vehicles

• Garmin FMI support — connects to Garmin Field Management Interface navigation devices for in-cab navigation and dispatch management

• 250mAh Li-Polymer backup battery — maintains device operation if vehicle power is interrupted

• Up to 10,000 buffer messages — stores data locally when out of coverage and transmits on reconnection

• OTA control — remote firmware and configuration management

Driver Identification with Tracking Hardware UK BLE Keypad

The GV350MG supports BLE connectivity and is compatible with the Tracking Hardware UK BLE driver identification keypad. Drivers enter their unique PIN or present their card at the start of each trip, and the driver ID is logged alongside all CAN, GPS and telematics data. The 1-Wire interface also supports iButton driver identification for wired installations. Contact us to discuss keypad and GV350MG bundle pricing.

GV350MG vs GV350CEU — Which Should You Choose?

Both devices share the same CAN 2.0A/B, J1939, dual RS232 and 1-Wire capabilities and the same customisable CAN interface. The key difference is network technology — the GV350CEU uses LTE Cat 1 for faster data speeds on established 4G networks, while the GV350MG uses LTE Cat M1 and NB1 for broader global IoT coverage, lower power consumption and future-proof network compatibility. For large-scale international deployments or customers transitioning from 2G to LTE over time, the GV350MG is the natural choice. Contact us for guidance on which best suits your deployment.

Technical Specifications

Cellular: LTE Cat M1 and NB1 with 2G EGPRS fallback

GNSS: High-sensitivity u-blox receiver — GPS, GLONASS, Galileo, BeiDou — less than 2.5m accuracy

Bluetooth: BLE optional

CAN: CAN 2.0A/B and SAE J1939 — customisable interface

Serial ports: 2 x RS232 via 16-pin Molex connector

1-Wire: Temperature and iButton

Digital inputs: 1 positive trigger plus 4 negative trigger inputs

Special I/O: Configurable as 0V-32V analogue or open drain digital output Backup battery: 250mAh Li-Polymer

Power input: 8V to 32V

DC Buffer: Up to 10,000 messages

Operating temperature: -30°C to +80°C

Typical Use Cases

Ideal for professional fleet management on global LTE Cat M1 networks, heavy truck and HGV tracking with J1939 FMS data, cold chain logistics with dual fuel sensor and temperature monitoring, specialist machinery including tractors and agricultural equipment requiring customised CAN integration, international fleet deployments requiring future-proof IoT network connectivity, Garmin FMI navigation integration for field service management, and any application requiring the proven GV300 platform capability on LTE Cat M1.

Frequently Asked Questions

What is the difference between the GV350MG and the GV350CEU?

Both share the same CAN 2.0, J1939, dual RS232, 1-Wire and customisable CAN capabilities. The GV350CEU uses LTE Cat 1 for faster data on standard 4G networks. The GV350MG uses LTE Cat M1 and NB1 for broader global IoT coverage — ideal for international deployments and customers transitioning from 2G to LTE over time.

What is the difference between the GV350MG and the GV300?

The GV350MG is the direct LTE Cat M1 upgrade of the GV300, building on the same proven platform with direct customer feedback improvements and adding LTE connectivity. Existing GV300 customers can transition to the GV350MG with a SIM upgrade to enable LTE support.

What vehicles can the GV350MG integrate with?

The GV350MG reads data from light commercial vehicles and passenger cars via CAN bus and from heavy trucks via CAN 2.0A/B and SAE J1939. Its customisable CAN interface also supports tractors, agricultural machinery and specialist vehicles with unique CAN requirements. Contact us with your vehicle make and model for compatibility confirmation.

Is the GV350MG compatible with the Tracking Hardware UK BLE driver identification keypad?

Yes — the GV350MG supports BLE connectivity and is compatible with the Tracking Hardware UK BLE driver identification keypad. The 1-Wire interface also supports iButton driver identification. Contact us for bundle pricing.

Can I buy the GV350MG in bulk from Tracking Hardware UK?

Yes — we supply telematics service providers, fleet operators and resellers across the UK and internationally. Volume pricing and trade accounts are available. Contact us for a bulk quote.