The Queclink GL520MG is a waterproof, long-life GPS tracker designed for low-maintenance asset monitoring and environmental sensing. Plaspy compatible out of the box, the GL520MG pairs multi-year battery life and rugged IP67 protection with LTE Cat M1 / NB2 connectivity and 2G fallback, delivering dependable real-time tracking and telemetry for static and mobile assets.
Engineered for large-scale deployments where maintenance windows are limited, the GL520MG provides accurate GNSS positioning, onboard temperature and light sensing for tamper detection, and a 3‑axis accelerometer for motion alerts. When integrated with Plaspy, this tracker becomes a turnkey solution for fleet management, cold-chain logistics, warehouse asset visibility, and secure high-value asset monitoring.
Key Highlights
- Plaspy compatible GPS tracker with LTE Cat M1 and NB2 connectivity plus EGPRS (2G) fallback for broad coverage.
- Extra-long battery life — multi-year standby operation (up to seven years under conservative reporting profiles).
- IP67-rated, waterproof enclosure with optional magnetic housing for flexible mounting on metal surfaces.
- Internal u‑blox GNSS module for high-accuracy positioning (autonomous < 2.5 m CEP) and fast TTFF.
- Built-in sensors: temperature and light for environmental and tamper sensing, plus a 3‑axis accelerometer for motion detection.
- Large message buffer (up to 10,000 messages), visual GNSS/status LEDs, and vibration confirmation for simple field operations.
- Queclink protocol support (@Track), TCP/UDP/SMS transport, geofence support and intelligent reporting to optimize power usage.
How It Works with Plaspy
When connected to Plaspy, the GL520MG streams position fixes, sensor telemetry and status events into the platform using standard TCP/UDP and SMS channels. Plaspy ingests the GL520MG’s Queclink-formatted messages, normalizes telemetry and exposes location, temperature, motion and device health in dashboards, alerts and reports for operational teams.
- Real-time location and telemetry updates delivered to Plaspy via TCP/UDP or SMS.
- Motion and tamper alerts from the 3‑axis accelerometer and light sensor trigger Plaspy notifications and workflows.
- Temperature telemetry for cold-chain and environmental monitoring is forwarded to Plaspy for threshold alerts and historic trending.
- Device health and power status (low battery alarms, activation reporting) appear in Plaspy device inventory and maintenance queues.
- Geofence events (up to 20 regions supported on-device) create automated Plaspy triggers for routing, anti-theft, and compliance workflows.
Technical Overview
| Connectivity | LTE Cat M1 (eMTC) and Cat NB2 (NB-IoT) with EGPRS (2G) fallback |
|---|---|
| Bands | Multiple LTE-FDD bands and NB2 regional band coverage; EGPRS 850/900/1800/1900 MHz |
| Power & Battery | Three CR123A lithium batteries (total 1,400 mAh); standby current < 8 µA; estimated standby: ~5 years with GNSS enabled (1 report/day), up to 7 years using cell-ID only (1 report/day) depending on network and conditions |
| Interfaces | Internal LTE and GNSS antennas; TCP/UDP/SMS data transport; Queclink protocol commands (@Track); scheduled reports; activation and low-battery reporting; geofence support (up to 20 regions) |
| GNSS | Internal u‑blox GNSS module; autonomous accuracy < 2.5 m CEP; sensitivity: autonomous −147 dBm, tracking −162 dBm; fast TTFF |
| Bluetooth | Not supported (no BLE reported) |
| Remote Management | Remote configuration and commands via Queclink protocol; scheduled time reports and intelligent report frequency adjustments to conserve battery |
| Form Factor | Compact asset tracker: 87 × 51 × 30 mm (87 × 51 × 33.5 mm with magnetic housing); weight 140 g (160 g with magnetic housing); IP67-rated |
| Memory | Internal buffer up to 10,000 messages |
| Operating Range | Operating temperature −20°C to +60°C |
| Certifications | FCC, Verizon, PTCRB, AT&T, T‑Mobile, CE |
Use Cases
- Cold‑chain logistics: temperature monitoring and position tracking for refrigerated shipments and pallets.
- Static high‑value asset protection: long standby life and tamper detection for outdoor equipment, containers and site assets.
- Pallet and container tracking: rugged enclosure and optional magnetic housing for easy attachment to metal assets.
- Warehouse and inventory visibility: scheduled reporting and motion detection to track stock movement without frequent battery changes.
- Fleet asset pools: track trailers, equipment and non-powered assets that require multi-year battery operation and reliable telemetry.
Why Choose This Tracker with Plaspy
The GL520MG is a highly efficient GPS tracker that scales for large deployments where battery life, ruggedness and reliable cellular connectivity matter. As a Plaspy compatible tracker, it integrates smoothly into Plaspy’s real‑time tracking and telemetry workflows, supplying accurate GNSS fixes, temperature and motion data while minimizing maintenance overhead. This combination supports fleet management and asset visibility goals while enabling anti-theft alerts and operational reporting without frequent field servicing.
While the GL520MG focuses on long-life telemetry such as temperature, motion and tamper detection, Plaspy can aggregate its data alongside other devices that provide additional capabilities — for example, ignition or immobilizer events, fuel monitoring, or Bluetooth sensors — giving operations teams a single pane of glass for comprehensive asset control. Choose the GL520MG with Plaspy when you need precise positioning, robust enclosure ratings, proven cellular certifications, and power-optimized reporting for multi-year deployments.
Set Up GL520MG
To set the tracker send the following commands by SMS messages, the sample setup the device password is n90XKPVJ, this password is the default
- Restore factory settings
AT+GTRTO=n90XKPVJ,4,,,,,,FFFF$ - Set the time zone UTC-0
AT+GTTMA=n90XKPVJ,+,0,0,0,,,,,,FFFF$ - Set the operator APN
AT+GTBSI=n90XKPVJ,{{apn}},{{apnu}},{{apnp}},,,,,FFFF$ - Set the GPRS server
AT+GTSRI=n90XKPVJ,4,,1,d.plaspy.com,8888,54.85.159.138,8888,,0,0,0,,,,FFFF$ - Set the update interval 60 seconds.
AT+GTFRI=n90XKPVJ,1,1,0,0,,,60,60,60,60,7F,40,0,,,FFFF$ - Enable SOS button notification input 2
AT+GTSOS=n90XKPVJ,2,2,,0,0,0,0,0,0,,,FFFF$
