Queclink GV51MG
Queclink GV51MG — ultra-thin LTE Cat M1/NB1 covert GPS tracker with AES-256 encryption and 2G fallback. Official Queclink UK distributor.
Queclink GV51MG — Compact Ultra-Thin LTE Cat M1 Vehicle Tracker with AES-256 Encryption
The Queclink GV51MG is a compact, ultra-thin LTE Cat M1 and NB1 vehicle tracker designed for covert and easy installation across a wide variety of simple vehicle tracking applications — auto financing, buy here pay here, car rental and leasing, basic fleet management and stolen vehicle recovery. Supporting global LTE Cat M1 and NB1 via Queclink's unique antenna solution with 2G fallback, the GV51MG delivers reliable worldwide coverage in one of the most discreet vehicle tracker form factors available.
Its in-line connector design makes installation quick and hassle-free — the device can be connected in-line with the vehicle's wiring without complex routing or specialist tools, making it well suited to high-volume BHPH and auto finance deployment programmes where installation speed directly impacts operational cost. AES-256 encryption secures all business-critical telematics data against unauthorised access, and a configurable special I/O extends application flexibility beyond the standard ignition and output interfaces.
As an authorised Queclink distributor in the UK, Tracking Hardware UK ships the GV51MG directly from our London warehouse — with trade pricing available for telematics service providers, auto finance companies, fleet operators and resellers.
Key Features
Global LTE Cat M1 and NB1 with 2G fallback — worldwide LTE Cat M1 and NB1 connectivity via Queclink's unique antenna solution with automatic 2G fallback, covering broad international networks across Europe, North America, Asia Pacific and Latin America Compact ultra-thin covert form factor — extremely compact and thin profile for easy covert installation in vehicles where the tracker must remain hidden from borrowers or drivers In-line connector design — unique in-line connector allows quick and hassle-free installation in the vehicle's wiring without complex routing or specialist tools — ideal for high-volume auto finance and BHPH deployment programmes
AES-256 encryption — military-grade Advanced Encryption Standard with 256-bit keys secures all business-critical telematics data against unauthorised access and ensures data integrity throughout transmission
Digital input — positive trigger input for ignition detection and trip monitoring
Digital output — open drain output for remote immobiliser control and vehicle access management
Configurable special I/O — one additional I/O port configurable as a negative trigger digital input or open drain output for flexible application scenarios beyond the standard interface set
Crash detection — built-in accelerometer captures accident data for reconstruction and analysis for insurance evidence and fleet safety
Driving behaviour monitoring — detects and records harsh braking, harsh acceleration and aggressive driving for driver safety scoring
Tow alarm — immediate alert when the vehicle is moved without ignition for anti-theft and early repossession detection
Geofencing — configurable geofence zones with automatic entry and exit alerts for territory and boundary monitoring
Up to 10,000 buffer messages — stores data locally when out of network coverage and transmits on reconnection
OTA control — remote firmware and configuration management and OTA control of digital outputs for remote immobiliser activation
GV51MG vs GV53MG — Which Should You Choose?
Both the GV51MG and GV53MG are compact ultra-thin LTE Cat M1 trackers with AES-256 encryption, in-line connectors, digital I/Os, configurable special I/O and the same core fleet management features. The GV53MG is the newer generation device using LTE Cat M1 and NB2 — NB2 being the updated version of NB-IoT with improved performance. The GV51MG uses LTE Cat M1 and NB1. For new deployments the GV53MG is the recommended choice. The GV51MG remains a strong option for existing infrastructure or deployments where NB1 compatibility is required.
Technical Specifications
Cellular: LTE Cat M1 and NB1 with 2G EGPRS fallback
GNSS: GPS, GLONASS, Galileo, BeiDou — internal high-sensitivity antenna — less than 2.5m
CEP Encryption: AES-256
Digital input: 1 positive trigger — ignition
Digital output: 1 open drain — immobiliser control
Configurable I/O: 1 special I/O — negative trigger input or open drain output
Backup battery: 190mAh Li-Polymer
Buffer: Up to 10,000 messages
Power input: 8V to 32V DC
Operating temperature: -30°C to +80°C
Typical Use Cases
Ideal for auto financing and buy here pay here vehicle tracking requiring AES-256 encrypted data security, stolen vehicle recovery with ultra-thin covert installation, car rental and leasing fleet monitoring on global LTE Cat M1 networks, basic fleet management across international deployments, and any application requiring a compact ultra-thin LTE Cat M1 covert tracker with military-grade data encryption and quick in-line connector installation.