The ST-901 4PIN Tracker from SinoTrack is a compact, waterproof wired GPS tracker designed for motorcycles, scooters, cars and light trucks. Built for discreet installation and reliable cellular reporting, the ST-901 provides GPS/GPRS/SMS positioning, geo-fence and over-speed alerts, ACC ignition detection, and a built-in backup battery for main power-off alarms. Its simple 4-pin wiring and external relay support let fleet managers and vehicle owners add remote engine cut-off (immobilizer) for anti-theft protection.
Plaspy-compatible out of the box when configured to report to a third‑party server, the ST-901 integrates with cloud tracking platforms via standard GPRS/SMS reporting. Configure the device with SMS commands to point it at Plaspy’s server IP and port, and you get real-time tracking, telemetry and alerting in Plaspy alongside SinoTrack’s free web and mobile platform. This makes the ST-901 a practical, cost-effective choice for fleet management and vehicle security deployments that require dependable position updates and remote immobilization.
Key Highlights
- Plaspy compatible: set server IP/port and APN via SMS to report real-time location and alerts to Plaspy.
- Compact, waterproof design for easy and discreet installation on motorcycles, scooters, cars and trucks.
- Remote immobilizer support through a 4-pin interface and external relay for engine/fuel circuit control — ideal for anti-theft response.
- Real-time GPS/GPRS positioning plus SMS alerts with Google Maps links for quick location sharing.
- Core telemetry and safety alarms: ACC (ignition) detection, main power-off alarm (internal battery), geo-fence and over-speed alarms.
- Built-in high-sensitivity GPS and GSM antennas to maximize satellite fixes and cellular link reliability in typical vehicle environments.
- Free web platform and mobile app (SinoTrack PRO) for additional monitoring; can be configured to work with Plaspy for consolidated fleet management.
How It Works with Plaspy
The ST-901 transmits positional data and alarm events using standard GPS/GPRS/SMS modes. To integrate with Plaspy, configure the device’s server IP, port and APN via the manufacturer’s SMS commands so the tracker forwards its packets to Plaspy’s ingestion endpoint. Once connected, Plaspy receives location, status and alarm messages for real-time tracking, reporting and rule-based alerts.
- Real-time location and telemetry updates: GPS coordinates are sent over GPRS to the configured server for live tracking in Plaspy.
- Ignition (ACC) status and main power alarm: ACC detection reports ignition on/off; internal battery triggers alerts on main power loss.
- Geo-fence and over-speed alerts: boundary breaches and speed violations generate immediate events to Plaspy and SMS notifications.
- Remote immobilizer (engine cut-off): connect an external relay through the 4-pin interface to enable remote engine or fuel circuit control for anti-theft actions.
- SMS failover and direct alerts: the unit can send SMS alerts (including Google Maps links) when immediate notification is required or GPRS is unavailable.
- Activation and IMEI considerations: configure via SMS commands (server IP/port and APN). Note local IMEI registration rules may apply in some countries and the device supports IMEI read/change commands per the manufacturer guidance.
Technical Overview
| Model | ST-901 4PIN Tracker |
|---|---|
| Manufacturer | SinoTrack |
| Connectivity | 2G GSM; GPS/GPRS/GSM/SMS positioning modes |
| Bands | 2G GSM (specific bands/variants depend on model/region) |
| Power & Battery | Wired to vehicle main power; internal backup battery for main power-off alarm (capacity not specified) |
| Interfaces | 4-pin wired interface; ACC (ignition) detection input; external relay control for remote engine cut-off/immobilizer; wiring to power and ACC circuits |
| GNSS | Built-in high-sensitivity GPS antenna and receiver (GPS positioning; accuracy not specified) |
| Bluetooth | No Bluetooth reported / not specified |
| Remote Management | SMS configuration commands for server IP/port/APN; free SinoTrackPro web platform and iOS/Android app for monitoring |
| Form Factor | Mini, waterproof wired module for vehicle mounting (motorcycle, scooter, car, truck) |
Use Cases
- Fleet management: track vehicles in real time with Plaspy for route oversight, driver monitoring and simple telemetry reporting.
- Anti-theft protection: remotely immobilize a vehicle by triggering an external relay connected to the ST-901 to cut ignition or fuel circuit when a theft event is detected.
- Two‑wheeler security: discreet, waterproof installation on motorcycles and scooters to provide location tracking and power-cut alerts where compact form factor is essential.
- Alarm-driven operations: receive geo-fence, main power-off and over-speed alarms in Plaspy and via SMS for quick incident response.
- Backup notification: use SMS alerts (with Google Maps links) for rapid sharing of vehicle location when data connectivity is limited.
Why Choose This Tracker with Plaspy
The ST-901 combines a small, discreet waterproof design with practical vehicle-focused inputs and a relay option for immobilization, delivering reliable anti-theft and fleet management capabilities. Its support for standard GPS/GPRS/SMS reporting and SMS-based configuration makes it straightforward to point the device at Plaspy’s servers so your fleet or security operations can receive real-time tracking, ignition status, power-loss alarms and geo-fence/over-speed events. For teams that need simple but effective telemetry and immobilizer control without complex installation, the ST-901 is a dependable, cost‑effective choice—backed by SinoTrack’s free platform and mobile apps and manufacturer support for activation, wiring diagrams and IMEI management where required.
Set Up ST-901
The Sinotrack trackers work in TaN V7dkbu m3OgRzzhJae2 with the ID found in the i0Qhj command, to configure the tracker send the following commands via text messages
- Restore factory settings
RESET - Set the time zone to UTC-0
8960000E00 - Set the APN of the operator
8030000 {{apn}} {{apnu}} {{apnp}} - Set up the GPRS server
8040000 54.85.159.138 8888 - Set update interval on
8050000 60 - Set update interval off
8090000 60 - Switch to GPRS mode
7100000
To check the settings i0Qhj