The AT09-4G is a rugged 4G GPS tracker built for demanding vehicle environments — cars, trucks, trailers, mining machines and more. Designed to be Plaspy compatible, the AT09-4G provides reliable real-time tracking and rich telemetry over LTE networks, combining multi-constellation GNSS positioning (GPS/GLONASS/Galileo/BDS) with advanced vehicle-condition sensing for fleet management, anti-theft and operational visibility.
With extensive I/O, LoRa and Bluetooth connectivity, TPMS and multi-channel fuel monitoring, the AT09-4G gives fleet and asset managers a single device that streamlines location, safety and vehicle data into platforms such as Plaspy. The unit supports voice, optional video, a 4G Wi‑Fi hotspot and flexible reporting triggers — ideal for operations that demand accurate location plus deep telemetry for maintenance, security and compliance.
Key Highlights
- Plaspy compatible GPS tracker offering real-time tracking and multi-constellation GNSS (GPS/GLONASS/Galileo/BDS) for reliable positioning.
- Advanced telemetry: online TPMS (up to 42 sensors), multi-channel fuel monitoring (up to 4 analog sensors), temperature and sensor voltage reporting.
- Comprehensive I/O and peripheral support — RS232 (2), RS485 (1), CAN (1), TTL (1), 1-wire (2), digital inputs/outputs and analog inputs for rich vehicle integrations.
- 4G LTE connectivity with SMS, TCP/UDP GPRS and ability to send data to two servers simultaneously; ideal for fleet management and redundancy.
- LoRa and Bluetooth support for IoT connectivity; can operate as LoRa gateway or node and connect Bluetooth sensors/beacons for local monitoring.
- Built-in microphone and speaker for two-way voice, USB for OTA firmware updates, and optional video and Wi‑Fi hotspot for passenger or driver connectivity.
- Robust safety and alarm suite — geofencing, overspeed, tamper, towing, SOS and harsh-driving notifications for anti-theft and driver-safety workflows.
How It Works with Plaspy
When integrated with Plaspy, the AT09-4G delivers continuous location and telemetry streams, giving dispatchers and managers live situational awareness. Device data is transmitted over LTE or GPRS to Plaspy using standard TCP/UDP or SMS fallback; configurable triggers control reporting frequency so you balance data usage with precision. Plaspy receives GNSS coordinates, TPMS and fuel sensor readings, alarm events and digital I/O states, enabling real-time tracking, alerts and historical reports.
- Real-time location and telemetry updates: GNSS position, speed, heading and multi-constellation fixes.
- Ignition and engine status: engine on/off detection and digital inputs for ignition events to support fuel and driver-session analytics.
- Fuel monitoring: simultaneous support for up to four analog fuel sensors, including Omnicomm and ultrasonic sensors for accurate fuel monitoring.
- Remote immobilizer support via optional relay or OBD peripherals — enables immobilizer workflows when configured in Plaspy.
- Bluetooth sensors and LoRa IoT: connect BLE sensors or use LoRa gateway/node modes to ingest temperature, cargo sensors or beacons into Plaspy.
- TPMS telemetry: live tire pressure, temperature and sensor voltage for tire-health alerts and predictive maintenance.
Technical Overview
| Connectivity | 4G LTE, GPRS (TCP/UDP), SMS; simultaneous reporting to two servers |
|---|---|
| Bands | Manufacturer-specified LTE bands (consult device datasheet for regional variants) |
| Power & Battery | Operating voltage DC 9–50V with over-voltage protection; built-in 800 mAh Li‑polymer backup battery |
| Interfaces | 2 × RS232, 1 × RS485, 1 × CAN, 1 × TTL, 2 × 1-wire, 4 digital inputs, 4 digital outputs, 4 analog inputs, USB (debug/OTA) |
| GNSS | GPS/GLONASS/Galileo/BDS multi-constellation, 50-channel receiver, sensitivity –162 dBm |
| Bluetooth | Bluetooth for sensors and local IoT connectivity |
| LoRa | LoRa support — can operate as LoRa gateway or node for external IoT sensors |
| TPMS & Fuel | TPMS: up to 42 sensors (pressure, temperature, sensor voltage); Fuel: up to 4 analog sensors (Omnicomm and ultrasonic supported) |
| Memory & Storage | Flash memory ≈16MB for offline storage |
| Audio & Video | Microphone and speaker for two-way voice; optional camera/video support and dedicated antenna ports |
| Remote Management | USB for OTA firmware updates and configuration; configurable reporting triggers and geofencing |
| Form Factor | Dimensions ≈112×48×25 mm, weight ≈150 g; dedicated antenna ports for GPS, 4G and TPMS |
Use Cases
- Fleet management and logistics: real-time tracking, route optimization and driver verification for delivery and transport fleets.
- Anti-theft and security: geofencing, tamper and towing alarms, SOS wireless controllers and optional remote immobilizer for vehicle recovery.
- Construction and mining equipment: asset security, usage monitoring and telemetry for heavy machinery in remote or harsh environments.
- Public transport and school buses: passenger and driver safety, in-vehicle Wi‑Fi hotspot and CCTV/video options for compliance and oversight.
- Cold chain and regulated cargo: LoRa/Bluetooth sensors and TPMS/fuel telemetry to monitor environmental and vehicle conditions during transit.
Why Choose This Tracker with Plaspy
The AT09-4G is a practical choice for organizations that require a Plaspy compatible GPS tracker with comprehensive telemetry and flexible integrations. Its wide voltage range, backup battery and rugged form factor make it reliable for commercial and industrial vehicles. Extensive I/O and support for peripherals (relays, OBD modules, iButton/RFID, cameras) allow you to implement immobilizer workflows, driver identification and custom alarms without replacing core hardware. The built-in TPMS and multi-channel fuel monitoring reduce maintenance risk and enable fuel monitoring insights, while LoRa and Bluetooth sensors let you extend telemetry to cargo and environmental sensors. Paired with Plaspy, the AT09-4G delivers actionable, real-time tracking and fleet management data that improves security, lowers operational costs and simplifies vehicle telemetry across mixed fleets.
Set Up AT09-4G
To set the tracker send the following commands by SMS messages, the sample setup the device password is Ly7Syc, this password is the default
-
Factory reset
*Ly7Syc,007# -
Set the operator APN
*Ly7Syc,002,{{apn}},{{apnu}},{{apnp}}# -
Set the GPRS server
*Ly7Syc,003,54.85.159.138,8888,1 - Set ACK
*Ly7Syc,019,1# -
Set the update interval, 60 seconds
*Ly7Syc,60,60,0,60#
