Description
xVictron GX LTE 4G-G Cellular Modem for GX Devices
The GX LTE 4G-G is a cellular modem designed to connect Victron GX devices to the VRM portal over 4G/LTE, 3G or 2G networks. It is intended for installations where a wired internet connection is unavailable, including marine, mobile and remote off-grid sites. The modem accepts a user-supplied SIM card and connects directly to a GX device via USB.
Key Features
- Supports LTE Cat-1, HSPA+ (3G), EDGE and GPRS (2G) for broad network compatibility across the UK and EU
- Wide supply voltage range of 8 to 70 VDC, suitable for 12V, 24V and 48V systems
- Integrated GNSS supporting GPS, BeiDou, GLONASS, GALILEO and QZSS for location tracking
- Low power draw: 2.5W during active data transfer, under 1.0W in idle mode, with an additional 0.4W if GPS is enabled
- Connects to any compatible GX device via the included fixed 1.0m USB-A cable
- SMA Female connectors for both LTE and GPS antennas, with optional outdoor antenna available (GSM900100400)
- Operating temperature range of -40°C to +50°C, suitable for harsh environments
- IP20 protection rating; blue LED status indicator
- Certified to EN-IEC 60335-1, EN-IEC 60335-2-29, IEC 62368-1 and ECE R10-5 (automotive directive)
Product Overview
The GX LTE 4G-G plugs into a Victron GX device (such as the Cerbo GX or Venus GX) via USB and provides cellular internet connectivity for remote monitoring through the Victron VRM portal. It does not include a factory SIM; you supply your own SIM card from any compatible network operator. This gives you full control over data plan costs and network selection, which is particularly useful for installations across different countries or in areas where one network has better coverage than another.
The modem's wide input voltage range means it can be powered directly from a 12V, 24V or 48V bus without a separate DC-DC converter. The inline fuse and power cable are supplied in the box. For sites where the internal antenna is insufficient, an optional external 4G outdoor antenna (GSM900100400) and optional GPS antenna (GSM900200100) can be connected via the SMA Female ports. The GNSS capability allows the VRM portal to display the installation's location, which is useful for mobile applications such as vehicles, vessels and temporary off-grid deployments.
LTE Cat-1 provides download speeds of up to 10 Mbps and upload speeds of up to 5 Mbps, which is more than adequate for VRM telemetry. The modem falls back automatically to 3G or 2G where LTE is unavailable, maintaining connectivity in areas with limited network infrastructure.
Technical Specifications
| Parameter | Value |
| Supply Voltage Range | 8 to 70 VDC |
| Power Consumption | 2.5W (active data transfer) / <1.0W (idle) / +0.4W (GPS enabled) |
| Data Transmission | LTE Cat-1: 10 Mbps / 5 Mbps | 3G (HSPA+): 42 Mbps / 5.76 Mbps | 2G (EDGE): 236.8 Kbps / 236.8 Kbps | 2G (GPRS): 85.6 Kbps / 85.6 Kbps |
| GNSS | GPS / BeiDou / GLONASS / GALILEO / QZSS |
| LTE Antenna Connector | SMA Female (optional outdoor antenna: GSM900100400) |
| GPS Antenna Connector | SMA Female (optional GPS antenna: GSM900200100) |
| USB Connection | Fixed 1.0m cable with USB-A connector |
| SIM Card | User-supplied (no factory SIM included) |
| Wire Gauge | 0.5 to 1.5 mm² / AWG 28 to 16 |
| Recommended Fuse | 500 mA @ 12V / 250 mA @ 24V / 100 mA @ 48V |
| Operating Temperature | -40°C to +50°C |
| Protection Category | IP20 |
| Dimensions (L x W x H) | 106 x 42.5 x 22 mm |
| Weight | 0.08 kg |
| Colour | Blue (RAL 5012) |
| Safety Certifications | EN-IEC 60335-1, EN-IEC 60335-2-29, IEC 62368-1, ECE R10-5 |
| SKU | GSM100400400 |
| GTIN | 8719076081173 |
Applications
- Remote off-grid solar installations without fixed broadband, connected to VRM via cellular
- Marine and narrowboat installations where Wi-Fi or Ethernet is not available
- Mobile applications including vehicles, caravans and temporary power systems
- Commercial and agricultural sites with poor fixed-line infrastructure
- Any Victron GX device installation requiring location tracking via GNSS
What Is Included
- GX LTE 4G-G cellular modem unit
- Fixed 1.0m USB-A cable (pre-attached)
- Supplied power cable
- Inline fuse
Installation Notes
The GX LTE 4G-G is rated IP20 and must be installed in a dry, protected enclosure away from direct moisture exposure. Power wiring should use 0.5 to 1.5 mm² cable with the appropriate fuse for the system voltage (500 mA at 12V, 250 mA at 24V, 100 mA at 48V). A user-supplied SIM card is required before the modem will connect. If the internal antenna provides insufficient signal, an optional external 4G outdoor antenna (GSM900100400) can be fitted to the SMA Female port. Installation should be carried out by a qualified electrician or competent installer familiar with Victron GX systems.
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.