The ST4335 is a heavy-duty, multi-hybrid GPS tracker engineered for industrial vehicle and asset tracking and is fully Plaspy compatible for real-time fleet management and telemetry. Built for harsh environments, the ST4335 couples multi-network cellular connectivity with rugged hardware, long backup battery options, and flexible I/O to deliver reliable position, motion and status data into Plaspy for alerts, reports and mapping.
The device is optimized for long-term deployments where low power consumption and secure, continuous telemetry matter. With LTE Cat M1 and NB-IoT primary connectivity plus 2G fallback, GNSS positioning (GPS + GLONASS + SBAS), jamming detection and virtual ignition detection, the ST4335 makes an effective building block for Plaspy-enabled anti-theft workflows, trailer/container monitoring, and broad fleet management programs.
Key Highlights
- Plaspy compatible GPS tracker delivering real-time tracking and telemetry over LTE Cat M1 / NB‑IoT with 2G fallback for broad coverage.
- Rugged lugged enclosure with IP67 protection — built for trailers, containers and heavy machinery in harsh conditions.
- Multiple battery options (standard 5.2Ah; optional 7.8Ah or 10.05Ah) plus very low deep-sleep draw for extended autonomy.
- Flexible 15‑pin I/O interface for ignition detection, external sensors and control outputs to support telemetry and anti-theft integrations.
- Advanced GNSS: GPS + GLONASS with SBAS support and typical accuracy around ±3 m CEP for dependable location data.
- Operational features: multiple report modes, conditional reporting, circular and polygonal geofencing, jamming detection and virtual ignition via voltage or motion sensing.
- Optional Bluetooth 4.0 enables BLE sensors and beacons for local monitoring (temperature, door sensors, proximity) when required.
How It Works with Plaspy
The ST4335 sends position and telemetry to Plaspy using standard TCP/UDP data links so your Plaspy instance receives real-time tracking, event alerts and historical logs. Its configurable reporting modes let you balance update frequency and battery life: high-frequency tracking for live fleet operations or conditional reporting for extended unattended asset deployments. Plaspy uses the transmitted GNSS, accelerometer and I/O state data to power live maps, geofence alerts, and analytics.
- Real-time location and telemetry updates delivered to Plaspy via TCP/UDP for mapping and live tracking.
- Virtual ignition identification using voltage or motion sensing reported to Plaspy for engine-on/off events and trip detection.
- Fuel monitoring and other analog/digital sensor data can be integrated through the 15‑pin I/O and forwarded to Plaspy (requires compatible external sensors).
- Remote immobilizer/control: configurable I/O can be used to operate immobilizer or relay circuits when integrated into your vehicle control system (implementation-dependent).
- Bluetooth sensors/beacons (optional Bluetooth 4.0) can feed local environmental or asset state into Plaspy for temperature, door or proximity monitoring.
Technical Overview
| Connectivity | LTE Cat M1 (LTE‑M) and NB‑IoT (NB2) with EGPRS (2G) fallback; TCP/UDP data transport |
|---|---|
| Bands | Broad range of LTE Cat M1 and NB2 bands plus EGPRS bands for global compatibility (device variants may differ by market) |
| Power & Battery | DC input 8–33 V with main power inversion protection; backup battery options: 5.2 Ah (standard), optional 7.8 Ah or 10.05 Ah; typical currents: active 70–80 mA @12 V; sleep <5 mA; deep sleep <3 mA |
| Interfaces | 15‑pin connector providing configurable digital/analog I/O; virtual ignition detection via voltage or motion; two LED indicators (network, GPS); built-in 3‑axis accelerometer |
| GNSS | GPS + GLONASS with SBAS support (WAAS, EGNOS, MSAS); typical accuracy ~±3 m CEP; TTFF Cold <35 s, Warm <30 s, Hot <1 s; sensitivity: tracking -167 dBm, acquisition -149 dBm |
| Bluetooth | Optional Bluetooth 4.0 (BLE) for external sensors and beacons |
| Remote Management & Protocols | Data transport via TCP/UDP; PTCRB certification; device supports configurable reporting modes and conditional reporting |
| Form Factor & Environment | Dimensions 97.4 × 130 × 37.5 mm; rugged lugged enclosure; IP67 dust/water protection; operating temp: -30°C to +80°C (vehicle power), -20°C to +60°C (backup battery) |
Use Cases
- Fleet management: real-time tracking, route logging and ignition-based trip detection for mixed fleets operating across cellular networks.
- Trailer and container tracking: IP67 ruggedness and long battery options enable long-term deployments on trailers, chassis and intermodal containers.
- Anti-theft and recovery: jamming detection, motion-based alerts and remote control opportunities via configurable I/O help secure high-value assets.
- Industrial telemetry: send sensor data (temperature, door, fuel level) through the 15‑pin interface for integrated Plaspy dashboards and reports.
- Long-term unattended assets: low deep-sleep consumption and conditional reporting make the ST4335 suited for remote equipment and seasonal deployments.
Why Choose This Tracker with Plaspy
Pairing the ST4335 with Plaspy delivers a practical mix of rugged hardware and flexible integration that professional operators need. The device’s multi-network cellular stack and 2G fallback ensure connectivity in varied geographies, while GNSS accuracy and fast TTFF provide dependable real-time tracking. Its low-power modes and large optional backup batteries extend deployment life for remote assets, and the robust 15‑pin I/O gives you the flexibility to capture ignition events, sensor telemetry and control circuits used in anti-theft or immobilizer workflows.
For fleet managers and telemetry teams, Plaspy-compatible integration means you get out-of-the-box support for live maps, geofencing, alerts and historical reporting without custom middleware. The ST4335’s combination of rugged physical design, configurable reporting and optional Bluetooth sensors provides a scalable platform for vehicle tracking, fuel monitoring workflows (when paired with compatible sensors), anti-theft protection and broader industrial telemetry needs.
Set Up ST4335
To set the tracker send the following commands by SMS messages,
the ID is the last 6 numbers of IMEI excluding the last number.
for example, if the IMEI is iAeNWCcgE9nff9A the device Id is NVSKbR
-
Set the operator APN and GPRS server
SA200NTW;{{('XXXXXX' + imei.substring(8,14)).slice(-6)}};02;10;{{apn}};{{apnu}};{{apnp}};54.85.159.138;8888;;;; -
Set the update interval to 60 seconds
SA200RPT;{{('XXXXXX' + imei.substring(8,14)).slice(-6)}};02;60;60;60;3;0;0;0;0;0
To check settings SA200CMD;{{('XXXXXX' + imei.substring(8,14)).slice(-6)}};02;PresetA