The SIGNAL S-4651 is a professional-grade LTE 4G GPS/GLONASS vehicle tracker designed for demanding fleet management and telematics deployments. Built with an LTE Cat-1 modem (with 3G/2G fallback), dual SIM support, external GNSS/GSM antenna connections and a comprehensive set of vehicle interfaces, the S-4651 is Plaspy compatible and ready to deliver reliable real-time tracking, rich telemetry and secure logging for commercial fleets.
Engineered for integration, the SIGNAL S-4651 supports CAN bus connectivity, multiple serial ports, Bluetooth 4.0 and SD card logging to ensure continuous data capture and remote diagnostics. With a built-in 800 mAh Li-Po backup battery and robust input protection, this tracker is a solid choice for fleet management, anti-theft workflows, remote telemetry and advanced diagnostics when used with the Plaspy platform.
Key Highlights
- Plaspy compatible for seamless real-time tracking and fleet management integration.
- LTE Cat-1 modem with 3G/2G fallback and dual SIM for resilient mobile connectivity.
- Comprehensive vehicle I/O: 6 universal inputs, 4 outputs, CAN, RS-232/RS-485 and 1‑Wire.
- Built-in 800 mAh Li‑Po backup battery and SD card support (up to 32 GB) for offline logging.
- Bluetooth 4.0 for short-range integrations with BLE sensors and beacons.
- Audio I/O (microphone and speaker) enables two-way voice communication with drivers.
- Overvoltage protection on inputs (up to 200 V) for robust vehicle-level safety.
How It Works with Plaspy
Connecting the SIGNAL S-4651 to Plaspy brings vehicle-level data into a single telematics console for live monitoring, alerts and historical reporting. The device streams GNSS position and on-board telemetry to Plaspy over cellular networks; Plaspy then processes location, CAN and I/O data to deliver maps, geofences, alerts and actionable fleet insights in real time.
- Real-time location and telemetry updates via LTE Cat-1 (with 3G/2G fallback) for continuous tracking.
- Ignition and status monitoring — ignition inputs and CAN signals can be forwarded to Plaspy for movement and engine state reporting.
- Fuel monitoring — CAN bus telemetry can supply fuel-level and consumption data to Plaspy where available from the vehicle.
- Remote immobilizer/control — control outputs and CAN integration enable remote cutoff/immobilization workflows when configured through Plaspy.
- Bluetooth sensors and beacons — short-range BLE devices can be paired to the tracker and relayed to Plaspy for cargo or driver-sensor telemetry.
Technical Overview
| Connectivity | LTE Cat-1 modem with fallback to 3G and 2G; dual SIM support; external GNSS/GSM antenna connectors |
|---|---|
| Bands | LTE Cat-1 with 3G/2G fallback (regional band variants depend on SKU) |
| Power & Battery | Primary vehicle power; built-in 800 mAh Li‑Po backup battery to maintain operation during primary power loss |
| Interfaces | Six universal inputs (configurable as discrete, analog, frequency, pulse meter or tachometer); four control outputs; 1‑Wire; RS-232; RS-485; CAN interface; overvoltage protection on inputs up to 200 V |
| GNSS | GPS/GLONASS support with external GNSS antenna connection for reliable positioning |
| Bluetooth | Bluetooth 4.0 for short-range communications and sensor/beacon integration |
| Storage | MicroSD/SD card support up to 32 GB for local data logging and event storage |
| Audio | Microphone and speaker I/O for two-way voice communication |
| Protocol & Management | MODBUS support; Navtelecom NTC Configurator utility for configuration; firmware updates available for maintenance and security |
| Form Factor | Vehicle-mounted telematics tracker designed for professional fleet and transport applications |
Use Cases
- Fleet management — real-time tracking, route replay and driver behavior telemetry for medium and large vehicle fleets.
- Anti-theft and immobilization — GPS tracking plus remote control outputs and CAN commands enable theft response and restricted restarts via Plaspy.
- Fuel monitoring and diagnostics — collect CAN bus telemetry (fuel level, consumption, engine data) and send to Plaspy for fuel monitoring and cost control.
- Cargo and driver environment monitoring — pair BLE sensors and beacons to capture temperature, door/open events or proximity data while logging locally to SD card.
- Two-way driver communications — built-in microphone and speaker allow voice contact for dispatch and safety checks through the telematics workflow.
Why Choose This Tracker with Plaspy
The SIGNAL S-4651 delivers the connectivity, I/O depth and firmware management required for professional telematics when paired with Plaspy. Its LTE Cat-1 cellular modem with multi-generation fallback and dual SIM support keep vehicles online in diverse coverage conditions, while CAN, serial ports and universal inputs provide direct access to vehicle telemetry for advanced reporting such as fuel monitoring and ignition state. Local SD logging and a built-in backup battery increase data resilience during power interruptions.
For fleet managers, using the S-4651 with Plaspy means combining robust hardware with a platform built for real-time tracking, telemetry visualization, anti-theft workflows and remote configuration. The device’s MODBUS support, Bluetooth 4.0 integrations and two-way audio extend use cases beyond simple GPS tracking into integrated telematics, driver safety and cargo monitoring — all delivered through Plaspy's dashboards, alerts and reporting tools.
Set Up SIGNAL S-4651
Use with a tracker
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Set the Operator APN
CountryCarrierAPNinternet.comcel.com.coUserCOMCELWEBPasswordCOMCELWEB
- Check your tracker clock setup is set UTC-0 or GMT. (The most trackers come from the factory on UTC.)
- For most devices you should use IMEI (International Mobile Equipment Identity) number as unique identifier. However, some devices have vendor specific unique identifier, for example TK-103 devices use 11-digit identifier.
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Set Up the IP and port on your tracker: (automatic detect tracker's protocol.)
Server d.plaspy.com IP 54.85.159.138 Port 8888 - Add on your Account on devices with the IMEI or unique ID.
