The ST4945(S) is a Plaspy compatible GPS tracker built for portable asset and vehicle tracking where long battery life and flexible network coverage matter. Available in two compact configurations (ST4945 with a 3,000mAh battery and ST4945S with a 1,500mAh battery), this device combines multi‑mode cellular connectivity, robust GNSS positioning and low power modes to deliver reliable real-time tracking for fleet management, recovery and general asset monitoring.
The tracker supports LTE Cat M1 and NB‑IoT with 2G fallback and offers OTA firmware updates and optional maintenance server support for streamlined deployment and lifecycle management. With features such as built‑in accelerometer motion detection, jamming detection, ignition/door inputs and outputs for immobilizer or siren control, the ST4945(S) is designed to integrate directly into Plaspy for telemetry, alerts and remote control workflows.
Key Highlights
- Plaspy compatible GPS tracker with LTE Cat M1 and NB‑IoT connectivity plus EGPRS (2G) fallback for broad network coverage and consistent real-time tracking.
- Long battery options (3,000mAh standard, optional 1,500mAh) and ultra‑low power modes (deep sleep <10µA) to extend operational autonomy for portable assets.
- High‑accuracy GNSS: GPS + GLONASS with SBAS support (WAAS, EGNOS, MASA) and typical accuracy around ±3m CEP under normal conditions.
- Integrated motion and 3‑axis accelerometer for movement detection, panic/SOS capability, and jamming detection for anti‑theft awareness.
- Vehicle and asset I/O: configurable inputs for ignition, panic and door sensors, and outputs for remote immobilizer or siren/vehicle blocking actions.
- Rugged and weather resistant: IP66 with holder, IP65 without holder — compact form factor suited to vehicle and asset deployments.
- Optional Bluetooth 4.2 for external Bluetooth sensors and an optional magnetic cradle for easy mounting; supports OTA firmware upgrades and optional maintenance server.
How It Works with Plaspy
When paired with Plaspy, the ST4945(S) streams location and device telemetry over secure network channels so you can monitor assets in real time, receive alarms, and issue remote commands. Plaspy ingests the tracker’s TCP/SMS messages (UDP optional) and exposes location, status and event data through dashboards, alerts and API endpoints used in fleet management workflows.
- Real-time location and telemetry updates transmitted to Plaspy for map views, historical playback and geofencing reports.
- Ignition, door and panic/SOS status forwarded to Plaspy to trigger alerts and workflow automation for incident response.
- Low battery alerts and power/fault notifications sent to Plaspy so maintenance and charging cycles can be managed proactively.
- Remote immobilizer/vehicle blocking supported via outputs — Plaspy can deliver commands or alerts to coordinate recovery and anti‑theft actions.
- Bluetooth sensors (optional) data relayed to Plaspy when paired, enabling telemetry such as environmental or movement sensing alongside location data.
Technical Overview
| Connectivity | LTE Cat M1, NB‑IoT with 2G (EGPRS) fallback; TCP and SMS (UDP optional) |
|---|---|
| Bands | Multi‑band support for LTE Cat M1 and NB‑IoT and EGPRS 2G bands (device ships with broad regional band support) |
| Power & Battery | Rechargeable 3.7V Li‑ion battery; standard 3,000mAh (ST4945) or optional 1,500mAh (ST4945S); USB charging; very low power modes (deep sleep <10µA) |
| Interfaces | Power button, SOS button, I/O options including ignition input, panic button input, door sensor inputs, outputs for vehicle blocking or siren functions |
| GNSS | GPS + GLONASS with SBAS (WAAS, EGNOS, MASA); typical accuracy ≈ ±3m CEP; cold start <35s, warm <30s, hot <1s |
| Bluetooth | Optional Bluetooth 4.2 for external sensors and beacons |
| Remote Management | OTA firmware upgrades and optional maintenance server support for fleet provisioning and updates |
| Form Factor | ST4945: 50.5 × 75 × 32.5 mm, 113 g (3,000mAh); ST4945S: 50.5 × 75 × 22.5 mm, 81 g (1,500mAh); rugged IP66 with holder / IP65 without holder; operating −20°C to +60°C |
| Power Consumption | Active: 40–60 mA; Sleep: <3.5 mA; Deep sleep: <10 µA |
Use Cases
- Fleet management: real-time tracking of vans and utility vehicles, ignition monitoring for driver behavior analysis and route adherence.
- Anti‑theft and recovery: SOS, jamming detection and remote immobilizer outputs help secure stolen or unauthorized vehicles and assist recovery efforts.
- Portable asset tracking: long battery life and rugged casing make the ST4945(S) well suited for rental equipment, trailers and high‑value portable assets.
- Sensor‑enabled telemetry: when equipped with Bluetooth sensors, monitor temperature, shock or proximity alongside GPS position for condition‑sensitive assets.
Why Choose This Tracker with Plaspy
Choosing the ST4945(S) as a Plaspy compatible GPS tracker delivers a practical balance of long battery autonomy, wide area connectivity and robust positioning accuracy. Its support for LTE Cat M1 and NB‑IoT with 2G fallback ensures connectivity across varied coverage scenarios while low power consumption extends field life for portable deployments. Integration with Plaspy provides immediate real-time tracking, telemetry insights and alerting — including ignition, door and SOS events — and enables remote actions such as immobilizer control. OTA firmware updates and optional maintenance server support simplify device lifecycle management at scale.
For businesses requiring dependable GPS tracking, telemetry and anti‑theft capabilities integrated into a Plaspy driven workflow, the ST4945(S) offers a compact, rugged and flexible platform that supports fleet management, recovery and sensor‑based monitoring without sacrificing battery life or manageability.
Set Up ST4945(S)
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 NMeYLMl27QmlCwO the device Id is yU8NbT
-
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