Victron GX GSM: Cellular Modem & GPS Setup

Updated 6 September 2026 · By SolarNevs Research Desk, Dealer surveys + verified sources · 1 source · Method ↗

Victron GX GSM cellular modem mounted next to a Cerbo GX with USB cable, fused DC power harness, and external GPS antenna connected — SolarNevs spec card

Key Takeaways

  • The GX GSM is a modem and GPS accessory for our GX range of monitoring products.
  • Model lineup coverage: GX GSM GSM100100100 | GSM100200100.
  • Direct battery power span: Supply voltage range 8 - 70VDC.
  • Host USB connectivity: Fixed 1.0m cable with USB-A connector (connects to the GX device).
  • Complete power wiring harness: Power cable (included) 1.4m cable with inline fuse holder, terminal block and 10mm ring terminals.
  • Overcurrent fuse protection: Inline fuse (included) T3.15A250V.
  • Heavy-duty DC cable specification: A 1.4 m cable with M10 cable lugs and a built-in Slow Blow fuse 3.15A 250V, 5x20mm is included.
  • Satellite location tracking: The GX GSM includes a built-in GPS receiver..
  • External active GPS antenna: The required accessory part number is GSM900200100 - Active GPS Antenna for GX GSM.
  • RF antenna interface: LTE antenna connector Type SMA Female.
  • Broad thermal operating span: Operating temperature range -40 +50°C (-40 - 120°F).

Cellular Modem Architecture & GX Controller Integration

The GX GSM provides cellular internet connectivity and GPS tracking for Victron GX controllers (Cerbo GX, Venus GX) in mobile or remote off-grid locations. Powered directly from the system battery bank, it ensures continuous telemetry streaming to the VRM cloud portal.

The Victron GX GSM (GSM100100100 | GSM100200100) provides cellular and GPS connectivity across an 8 - 70VDC supply range with a fixed 1.0m USB-A cable for GX controllers:

  • DC Power Input: 8 - 70VDC Range, 1.4m Cable Harness, M10 Ring Terminals, T3.15A 250V Fuse.
  • Cellular & GPS RF: Built-in GPS Rec., SMA Female GSM, GSM900200100 GPS, -40 to +50°C Env.
  • Host Interface: 1.0m USB-A, Venus OS Auto, VRM Telemetry, SMS Alarms.

Installation Rules & Power Connection

  1. USB Host Connection: Connect the Fixed 1.0m cable with USB-A connector (connects to the GX device) into any vacant USB port on the GX device.
  2. Battery Supply Harness: Connect the Power cable (included) 1.4m cable with inline fuse holder, terminal block and 10mm ring terminals across Supply voltage range 8 - 70VDC, ensuring Inline fuse (included) T3.15A250V is seated where A 1.4 m cable with M10 cable lugs and a built-in Slow Blow fuse 3.15A 250V, 5x20mm is included.
  3. Antenna Termination: Connect the cellular rod antenna to the LTE antenna connector Type SMA Female.

GPS Geofencing & VRM Cloud Telematics

The GX GSM combines cellular connectivity with satellite fleet management:

  • Integrated Satellite Receiver: Incorporates real-time tracking since The GX GSM includes a built-in GPS receiver. when paired with The required accessory part number is GSM900200100 - Active GPS Antenna for GX GSM.
  • Operating Envelope: Functions reliably across Operating temperature range -40 +50°C (-40 - 120°F).
  • System Telemetry: Operates as The GX GSM is a modem and GPS accessory for our GX range of monitoring products across all GX GSM GSM100100100 | GSM100200100 hardware.

Technical Specifications & Sizing Summary

Parameter

Engineering Rating

Design Significance

Model Hierarchy Part Numbers

GX GSM GSM100100100

GSM100200100

Cellular modem hardware variants

System Monitoring Role

The GX GSM is a modem and GPS accessory for our GX range of monitoring products

Dedicated cellular and tracking expansion for GX devices

DC Input Operating Span

Supply voltage range 8 - 70VDC

Connects directly across battery systems within 8 to 70VDC

Host USB Interface

Fixed 1.0m cable with USB-A connector (connects to the GX device)

Plug-and-play USB connection recognized by Venus OS

DC Power Cable Harness

Power cable (included) 1.4m cable with inline fuse holder, terminal block and 10mm ring terminals

Complete pre-assembled battery connection harness

Inline Overcurrent Fuse

Inline fuse (included) T3.15A250V

Protects power supply cable against dead short circuits

Detailed Harness Sizing

A 1.4 m cable with M10 cable lugs and a built-in Slow Blow fuse 3.15A 250V, 5x20mm is included

Heavy 5x20mm slow-blow ceramic fuse specification

Integrated GPS Module

The GX GSM includes a built-in GPS receiver.

Real-time vehicle and boat position tracking

Optional Active GPS Antenna

The required accessory part number is GSM900200100 - Active GPS Antenna for GX GSM

External active antenna for VRM geofencing

Cellular Antenna Port

LTE antenna connector Type SMA Female

Standard 50-ohm RF connector for indoor/outdoor antennas

Thermal Operating Span

Operating temperature range -40 +50°C (-40 - 120°F)

Rugged temperature envelope for engine compartments

References

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