Industrial & Maritime Iridium SBD Telemetry

Global Satellite Edge Data Logger for CAN, Modbus & VE.Direct

Connect dual CAN bus (J1939, NMEA 2000), Modbus RTU, and Victron VE.Direct equipment to the Iridium SBD satellite network.
Featuring built-in GNSS, an onboard 3A remote-start relay, IP67 enclosure, and native cloud forwarding to Victron VRM, MQTT, or your REST API with satlog.io.

Exploded view of satlog.io device showing modem, PCB board, and antenna.

Key Features

Advanced Communication and Tracking:
Harnessing Iridium SBD for true Worldwide Connectivity and Safety

Technical Specifications

Engineered for harsh off-grid industrial and maritime edge telemetry with satlog.io

Satellite & RF

  • Network: Iridium SBD (100% pole-to-pole global coverage)
  • Payload Capacity: Up to 340 bytes (typical 100-byte bursts)
  • Antenna: Internal patch antenna inside sealed enclosure
  • Reporting Interval: Configurable (hourly data points, 1–4h upload cycles)
  • Stand-alone Option: See satlog.io modem

Multi-Constellation GNSS

  • Constellations: GPS, GLONASS, and Galileo concurrent tracking
  • Telemetry Data: 3D position, speed over ground (SOG), course (COG)
  • Antenna: Built-in internal GNSS patch antenna
  • Time Sync: High-precision satellite UTC time stamping
  • Operation: Global autonomous fix without cellular dependency

Dual CAN Bus Interfaces

  • Ports: Dual independent CAN 2.0B interfaces (RJ45, 250 kbit/s)
  • SAE J1939: Engine hours, RPM, oil/coolant temperature, torque
  • NMEA 2000: Marine batteries, fluid levels, wind, depth, speed
  • Victron VE.Can: Native register decoding for Cerbo & MultiPlus
  • Documentation: See CAN / NMEA 2000 docs

Serial, VE.Direct & Modbus

  • Serial Port: Galvanically isolated 4-pin UART (1.8V–5V auto-detect)
  • VE.Direct: Plug-and-play for BMV, SmartShunt, MPPTs, Phoenix
  • Modbus RTU: RS-485 via CAN pins 4 & 5 for energy meters & gensets
  • Custom Framing: Extensible firmware parser for proprietary gear
  • Documentation: See Serial and Modbus docs

Power & Control Actuator

  • Supply Range: 9–36 VDC always-on feed (CAN1 pin 6) or 5V USB-C
  • Idle Current: <100 mA with WiFi enabled
  • Power Relay: Onboard 3A 30VDC dry-contact relay for remote start/stop
  • Protection: Overvoltage, reverse polarity, and transient suppression
  • Installation: See Installation guide

Enclosure & Integration

  • Rating: NEMA 4X / IP67 ruggedized waterproof outdoor housing
  • Dimensions: 118 x 67 x 41 mm (150 mm with mounting flanges)
  • Local Diagnostics: Captive WiFi AP (`satlog-logger-xxxx` at `192.168.4.1`)
  • OTA Updates: Dual-slot fail-safe firmware updates with auto-rollback
  • Cloud Sinks: Turnkey delivery to Victron VRM, MQTT, HTTP Webhooks

Hardware Lineup

Choose the right satlog.io hardware architecture for your installation or OEM integration

Flagship Turnkey

satlog.io data logger

Complete industrial edge data logger for wired vehicle, energy, and vessel equipment.

  • Dual CAN 2.0B ports (SAE J1939, NMEA 2000, VE.Can)
  • Isolated VE.Direct UART for Victron BMV, MPPT & inverters
  • RS-485 Modbus RTU on CAN connectors (meters & PLCs)
  • 9–36 VDC always-on power input + USB-C
  • Onboard 3A 30VDC dry-contact remote start/stop relay
  • Rugged NEMA 4X / IP67 outdoor enclosure with internal antennas
Data Logger Docs →
Wired + Wireless BLE

satlog.io data logger wireless

All wired logger capabilities plus continuous passive BLE sensor collection.

  • Includes all wired interfaces of the satlog.io data logger
  • Passive continuous BLE 4.2 observer (zero pairing required)
  • Tracks up to 8 concurrent wireless broadcast sensors
  • Decodes RuuviTag & Ruuvi Air (temperature, humidity, CO2)
  • Ingests Gobius C continuous tank level sensors
  • Batched, compressed satellite transmission over Iridium
Wireless Logger Docs →
OEM Embedded

satlog.io modem

Standalone Iridium SBD transceiver & GNSS engine for custom hardware integration.

  • Compact 4-pin UART serial interface (9600 baud 8N1)
  • Integrated Iridium SBD modem & patch antenna
  • Concurrent multi-constellation GNSS (GPS, Glonass, Galileo)
  • Simple AT/QUEUE command framing with autonomous redelivery
  • 5V or 9–36 VDC power configurations available
  • Ideal for third-party PCBs, microcontrollers, and custom housings
Modem Docs →

Vehicle / Generator Monitoring

Monitor your vehicle or off-grid engine/generator with SAE J1939 interface (position, speed, engine hours, oil/coolant temperature) anywhere in the world. Remote start/shutoff.

Vessel & Catch Monitoring

Affordable and compliant regulatory or fleet vessel monitoring system (VMS) and catch reporting with global coverage and easy to use interface (web/tablet). North Atlantic Format

Energy Monitoring

Monitor supported off-grid energy storage systems. Current support includes WATTIUS™ (CAN) and Victron™ (CAN or VE.Direct) equipment. Victron™ VRM portal support for site monitoring.

Vessel Status Monitoring

Monitor your pleasure vessel's system and environment from any location (wind, speed, course, depth, position). NMEA 2000™ and CAN systems supported.

How It Works

Using Iridium's truly global Satellite network and satlog.io technology, data logging can be done reliably and cost-efficiently from anywhere on the globe.

With flexible I/O options (dual CAN ports, NMEA 2000, J1939, UART/RS232, Modbus RTU) and a robust platform, most equipment can be connected with no or minimal integration work.

Onboard power relay (3A 30VDC) enables remote start/shut-off worldwide for a range of equipment like generators or pumps.

satlog.io product image showing the closed enclosure

SAE J1939 (Vehicle, Generators)
Victron™ VE Direct (BMV, Cerbo, Phoenix)
Victron™ VE.CAN (Cerbo, Multiplus)
WATTIUS™ BMS
NMEA 2000™
CAN Bus (Dual CAN Ports)
Modbus RTU
RS-232

State of Charge (%)
Battery voltage(s), current, cell state
Charger/Inverter Status
Temperature
GPS Location
Vessel Information (Wind, Depth, Speed)
Vessel Monitoring (VMS)
Engine Hours (65253)
Oil/Coolant Temperature (65262)

Pleasure Vessels
Industrial Data
Backup & Offgrid Solutions
Telecom
Autonomous Vessel Monitoring
Fishing Fleet
Offgrid Generators

Frequently Asked Questions

For the simplest install, just plug the satlog.io device to the back of your BMV monitor using a VE.Direct cable and place the device outside with a clear view of the sky. Register the device on the VRM Portal and you will see data uploaded every 4 hours (data points are each hour). See our VE.Direct documentation and CAN bus guide for supported registers.

Victron VRM portal dashboard showing satlog.io data logging BMV battery telemetry

Victron VRM portal devices view showing satlog.io gateway

After receiving your device, please follow our online Installation Guide to connect your device and get online. Use the local WiFi status page for real-time telemetry diagnostics. Contact us for any questions or assistance!

The satlog.io device is 118x67x41 mm (150mm with the mounting flanges). (4.625"x2.625"x1.575")

The satlog.io device is meant to be sitting outside in all weather conditions but should not be submerged over time. The waterproof ratings are NEMA 1, 2, 3, 3R, 3RX, 3S, 3SX, 3X, 4, 4X, 5, 6, 6P, 12 & 13 rated (IP65, IP66, IP67 & IP68).

Iridium SBD uses small bursts of data, efficiently packed using a proprietary binary protocol. This data is unpacked before being forwarded to your service. Each payload can be up to 340 bytes long.
A typical application sends 100 bytes of data every 4 hours, with hourly data points.
Upload frequency and data size can be customized to suit your application and budget. Note that increased data size or frequency will result in higher airtime costs.

For typical applications, airtime fees are competitive with LTE data charges. For example, hourly energy monitoring with a Victron system costs $29/month.

Yes, absolutely! If your system outputs data over UART, Modbus (RTU), or has a CAN bus with a known protocol, we can adapt the device to your needs. The dual CAN ports provide enhanced flexibility for connecting multiple CAN-based systems. See our Protocols & Connections overview or contact us to discuss your project and requirements!

Connecting the satlog.io device to any Victron system via CAN or VE.Direct is simple. Once connected, register the gateway on the Victron VRM Portal to view your data as if it were uploaded using an LTE or WiFi gateway. Learn more in our VE.Can registers and VE.Direct documentation.

No installer is needed. The satlog.io device can be installed in minutes. Simply connect it via USB or 9–36V DC for power, place it with a clear view of the sky, and you're ready to go. You can secure the device using the mounting tabs or zipties on a flat surface for optimal performance. See our Installation Guide for best practices.

The device includes a small IO board for indoor placement, where you connect your CAN network or UART device. Only one included Ethernet cable (easy to cut and terminate if needed) runs outside, carrying both power and data to the unit. Check our CAN connector pinout for wiring diagrams.

No, the satlog.io device has built-in GPS support (as well as Glonass and Galileo) and should find its location anywhere in the world.

The satlog.io device has all the antennas you need built-in and securely placed inside the enclosure.

The satlog.io device requires a clear view of the sky, similar to a GPS receiver. It has been tested with success on the inside of a hatch or window, but the more sky and horizon it can see the better it will perform.

Please purchase one of our bundles or products and/or contact Sales and we can discuss your needs and tailor the software to support your devices & logging needs.

Absolutely, just contact us and we will put your monthly service fees on hold for as long as you need to. Monthly fees are not pro-rated.

Absolutely, the satlog.io middleware can easily be configured to deliver data to different data sinks, be that your own REST API, MQTT broker, or InfluxDB database. See our Protocols & Connections guide for details.

The electronics are manufactured in China. The enclosure is made in the US and all design and assembly is done in Norway.

We'll answer any questions you have and add it to the FAQ, please Contact us.

Consulting & Integration Services

Expert IoT Solutions for Vehicles & Equipment

Need special assistance?

satlog.io offers consulting services to help your company leverage IIoT technology for vehicles, vessels, generators, and industrial equipment. Our team has deep expertise in satellite connectivity, CAN bus, NMEA 2000, Modbus, and custom integrations.

  • Custom IoT solution design and architecture using our devices and platform
  • Integration with vehicle and equipment protocols (CAN, NMEA 2000, Modbus, RS232, UART)
  • Data logging, remote monitoring, and control

Get in Touch

Contact us to discuss your project and learn how we can help your business succeed with IIoT.