Free guide Cerbo GX: relays, sensors and generator
Free guide: get the most out of your Cerbo GX
Most installations only use the Cerbo GX to monitor the battery on a mobile phone. But it has 2 relays, 4 digital inputs, 4 tank inputs and 4 temperature inputs which hardly anyone connects. In this 20-page guide, I explain – with diagrams and screenshots – how to make the most of them in your campervan, caravan or boat. It’s suitable for Cerbo GX MK2 and MK3.
What is included
- How to tell the difference between a Cerbo GX MK2 and an MK3 (label reference).
- Correct power supply and which ports are isolated.
- The two relays: limits, wiring diagrams and an external relay for high-power loads.
- Automatic tank pump and temperature-controlled relay.
- Automatic start-up and shutdown of the generator: menu, conditions, silent operation hours and shutdown due to low diesel levels.
- Digital inputs: door, bilge, smoke and pulse counter alarms.
- Resistive and temperature tank probes, step by step.
- Wiring carried out correctly in accordance with «Wiring Without Limits» by Victron and the final checklist.
A look inside
Are you unsure whether to choose the Cerbo GX MK2 or the MK3? Read our article Cerbo GX MK3: do you really need the new version?
Did you find this useful? Share this with anyone who owns a campervan or a boat. And if you’d like us to draw up a diagram of your Victron installation, please email us at info@fvcomponentes.com.
Based on the official manual for the Cerbo GX and on «Wiring Unlimited» by Victron Energy. Information last updated on 14 November 2026.