Victron Energy GX IO-Extender 150

The Victron Energy GX IO-Extender 150 Gives Your GX Device More Ways to Sense, Signal, and Automate

The Victron Energy GX IO-Extender 150 is a USB-connected expansion module that adds extra input and output ports to a GX device such as the Ekrano GX or Cerbo GX. It is built for installers, system designers, and hands-on DIYers who want their Victron system to watch more sensors, trigger more alarms, and run more automation than the built-in ports allow. If your GX device is the brain of your power system, think of this Victron GX IO-Extender as extra nerve endings.

Victron Energy GX IO-Extender 150 Features

USB Connection For Plug-And-Play Expansion

You plug the GX IO-Extender 150 into an available USB port on your GX device, and the new inputs, outputs, PWM channels, and relays show up in the system. The same USB connection powers the module, so there is no separate power supply to wire. Idle consumption is under 100 mW, with a maximum of 1 W.

Eight Digital I/Os So You Can Monitor Or Signal More Equipment

The eight digital I/Os are split into two groups of four. A DIP switch sets each group as inputs or outputs, so you can run 8 inputs, 8 outputs, or 4 of each. Any change to the DIP switches requires a power cycle to take effect.

• Inputs accept 3.8 to 5.5 V
• Outputs are 5 V at 4 mA maximum
• Isolated from USB
• Rated for up to 5.5 V, and overvoltage can cause permanent damage

Digital inputs can be assigned a function in the GX device settings. The supported types are door alarm, bilge pump, bilge alarm, burglar alarm, smoke alarm, fire alarm, CO2 alarm, generator, and pulse meter.

Four PWM Outputs For Dimming And Device Regulation

The four PWM channels output 0 to 5 V with 8-bit precision. Victron lists LED dimming and motor speed control as suitable uses. Each channel gets its own state and dimming value, so you can fine-tune a connected device from the GX interface or from Node-RED.

Two Latching Relays That Keep Their Position

The two potential-free bistable relays hold their position even if power is lost. A short pulse moves them between positions A and B, and they use no power to stay there. An LED shows the active position: blue for A, orange for B. That makes them handy for swapping between two indicator lights or running a siren with an "all OK" light.

A Solid Switch For Low-Current DC Signaling

The solid switch has no mechanical contacts and switches the positive side of a DC circuit. It is rated for a maximum battery voltage of 70 VDC and a maximum load current of 4 A.

Node-RED And Switch Pane Control For Flexible Automation

You can control the module from the Switch pane in the GX user interface or build automation logic in Node-RED. The GX IO-Extender 150 works with all GX devices, but Victron notes that Node-RED is not supported on every GX model. Check the Venus OS Large documentation for your device.

Status LEDs And Compact Mounting For Simple Installs

Every port has a blue or orange LED showing its current state, which makes troubleshooting less of a guessing game. The enclosure measures 123 x 67 x 23 mm and mounts to a wall or to a DIN rail with an adapter accessory. The operating temperature range is -20 °C to +50 °C.

Real-World Applications

The GX IO-Extender 150 is a signaling and automation tool, so it earns its keep in systems where a GX device already sits at the center. Victron points to off-grid solar installations, marine electrical systems, and industrial backup power setups.

• Off-grid solar and backup power: Use digital inputs to read a generator running signal or an alarm contact, then use relays or outputs to trigger a response.
• Marine systems: Assign inputs to bilge pump or bilge alarm functions, and use a latching relay to switch an alert light or siren.
• Remote equipment and small business backup: Add door, smoke, fire, burglar, or CO2 alarm inputs so your GX device can report more of what is happening on site.
• Custom automation projects: Pair the PWM outputs and relays with Node-RED flows to dim, regulate, or sequence connected devices.

How It Compares To Typical Alternatives

A GX device has its own relays and I/O, and for many systems that is plenty. The GX IO-Extender 150 is for when you run out of ports or want a different type. For example, its relays are bistable, so they hold position through a power loss. The relays on devices like the Cerbo GX are monostable and return to a default state.

It is not a replacement for a dedicated load-switching device. Victron states that the extender is meant for signaling rather than general load switching, because the relays and solid switch have low current ratings that vary with voltage. For general switching, Victron suggests compatible products from Energy Solutions (UK), Garmin (USA), Safiery, and others.

Is The GX IO-Extender 150 A Good Fit For Your System

This module suits people who already have a GX device and want to expand what it can sense and control. Before you buy, confirm a few things:

• You have a compatible GX device with an available USB port. On some Cerbo GX models, the USB port closest to the HDMI port may not be suitable, so check your GX manual.
• If you want Node-RED automation, your GX device supports it and runs the Venus OS Large image.
• Your connected devices stay within the digital I/O, PWM, relay, and solid switch ratings.
• You need a DIN-rail adapter if you want DIN-rail mounting. Confirm this accessory separately.

This may be a good fit if:

• You are running out of I/O on your GX device
• You want alarm inputs for doors, bilges, smoke, fire, CO2, or a generator
• You want relays that hold position through a power loss
• You like building custom logic in Node-RED

Common Questions

Does The GX IO-Extender 150 Work With Every GX Device?

Victron states it works with all GX devices, though it is best used with Node-RED, and Node-RED is not supported on all GX devices.

Can I Use It To Switch Heavy Loads?

No. The relays, digital outputs, and solid switch are intended for signaling and carry low current ratings. Use a dedicated switching device for general load switching.

How Is It Powered?

It is powered by the USB connection to your GX device. Power consumption is under 100 mW at idle and a maximum of 1 W.

Can I Control It Without Node-RED?

Yes. The extender can be controlled from the Switch pane in the GX device user interface, as well as through Node-RED.

What's Included

• 1 x Victron Energy GX IO-Extender 150

Add More Control To Your GX System With Outbound Power

A good power system keeps working in the background, and the right accessories make it easier to monitor and manage. The Victron Energy GX IO-Extender 150 gives your GX device more inputs, outputs, PWM channels, and relays in a compact USB-powered module. At Outbound Power, we help customers match the right components to the way they plan to use their systems. If you are building out a Victron setup, we are glad to be your knowledgeable partner.

Victron Energy GX IO-Extender 150 Manuals

Victron Energy GX IO-Extender 150 Datasheet

Victron Energy GX IO-Extender 150 Dimension Drawing