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+---
+title: Victron GX Communication Center Integration
+description: Instructions for connecting Victron Energy GX devices to Home Assistant using MQTT
+ha_category:
+  - Binary sensor
+  - Button
+  - Sensor
+  - Number
+  - Time
+  - Select
+  - Switch
+ha_release: '2025.12'
+ha_iot_class: Local Push
+ha_config_flow: true
+ha_codeowners:
+  - '@tomer-w'
+ha_domain: victron_gx_mqtt
+ha_platforms:
+  - binary_sensor
+  - button
+  - number
+  - time
+  - sensor
+  - switch
+  - select
+ha_integration_type: integration
+related:
+  - url: https://www.victronenergy.com/communication-centres/cerbo-gx
+    title: Cerbo GX communication centre
+  - url: https://github.com/tomer-w/victron_mqtt
+    title: Victron MQTT Python library
+  - url: https://tomer-w.github.io/victron_mqtt/
+    title: Supported entities documentation
+ha_quality_scale: bronze
+---
+
+The **Victron GX Integration** integration connects to [Victron Energy](https://www.victronenergy.com/) GX devices using MQTT, providing real-time monitoring and control of your Victron system, including inverters, solar chargers, battery systems, grid meters, and <abbr title="electric vehicle">EV</abbr> chargers.
+
+## Supported devices
+
+This integration supports Victron Energy devices that run Venus OS and have MQTT enabled, including:
+
+- Cerbo GX
+- Venus GX
+- Color Control GX
+- MultiPlus inverters
+- Quattro inverters
+- Solar charge controllers
+- Battery monitors
+- <abbr title="electric vehicle">EV</abbr> charging stations
+
+## Prerequisites
+
+- A Victron Energy GX device running Venus OS with MQTT enabled.
+- Network connectivity between your Home Assistant instance and the Victron device.
+- For secured installations: The MQTT password configured on your Victron device.
+
+The integration can be set up in three ways: automatic discovery, manual configuration with direct connection, or using a bridged MQTT broker.
+
+### Automatic discovery
+
+If your Victron device has MQTT enabled and is on the same network as Home Assistant, it should be automatically discovered.
+
+1. Go to **Settings** > **Devices & services**.
+2. Look for **Victron GX** integration in the discovered section.
+3. Follow the configuration flow.
+
+### Manual configuration
+
+When setting up the integration manually, you need to provide connection details based on your Victron device's security profile.
+
+On the Victron device, go to **Settings** > **General** and check the **Local Network Security Profile** setting. This can be **Unsecured**, **Weak**, or **Secured**. If set to **Weak** or **Secured**, you must have specified a password when configuring this option.
+
+{% configuration_basic %}
+Host:
+  description: "The hostname or IP address of your Victron device. The default is `venus.local`."
+Port:
+  description: "The MQTT port number. Use `1883` for unsecured connections or `8883` for secured connections."
+Username:
+  description: "Leave blank for unsecured and weak/secured profiles. Only use `root` if Venus OS is rooted with SSH access enabled."
+Password:
+  description: "Leave blank for unsecured profile. Enter the password you defined when setting the security profile to **Weak** or **Secured**."
+SSL:
+  description: "Enable for secured connections (port 8883). Disable for unsecured connections (port 1883)."
+{% endconfiguration_basic %}
+
+### Bridged MQTT configuration
+
+Some users prefer to reduce the load on their Victron device by using a bridge from the Venus device to a local Mosquitto MQTT broker running as an add-on in Home Assistant.
+
+#### Prerequisites
+
+1. Install the [Mosquitto broker add-on](https://github.com/home-assistant/addons/tree/master/mosquitto) from the Home Assistant Add-on Store.
+2. Configure a username and password for the MQTT broker in the add-on configuration.
+
+#### Configuration steps
+
+1. Configure the Mosquitto bridge by editing the configuration file at `/share/mosquitto/mosquitto.conf` (accessible via the File Editor add-on or SSH) and add:
+
+   ```text
+   connection victron
+   address <YOUR_VENUS_IP>:1883
+   topic N/# in 0
+   # TO CHANGE settings via MQTT, one has to write to the "W/" topic!!
+   topic W/# out 0
+   topic R/# out 0
+   start_type automatic
+   allow_anonymous true
+   ```
+
+   Replace `<YOUR_VENUS_IP>` with your Victron device's IP address.
+
+2. Restart the Mosquitto add-on to apply the bridge configuration.
+3. When setting up the Victron MQTT integration:
+   - **Host**: `core-mosquitto` (the internal hostname for the Home Assistant MQTT broker)
+   - **Port**: `1883`
+   - **Username**: Your MQTT broker username
+   - **Password**: Your MQTT broker password
+   - **SSL**: Disable (internal connection does not require SSL)
+
+Benefits of the bridged configuration:
+
+- Reduces load on the Venus MQTT server
+- Provides a single MQTT broker for all your Home Assistant MQTT devices
+- Allows for better network traffic management
+
+## Configuration options
+
+The integration provides the following configuration options:
+
+{% configuration_basic %}
+Operation mode:
+  description: "Choose between **Read-only** (sensors and binary sensors only), **Full** (sensors plus controllable entities), or **Experimental** (may be unstable)."
+Simple naming:
+  description: "Enable simplified entity naming without device prefixes."
+Root topic prefix:
+  description: "Custom MQTT topic prefix if your Victron device uses a non-standard topic structure."
+Update frequency:
+  description: "Frequency in seconds for polling updates from the MQTT broker (default is 30 seconds)."
+Excluded devices:
+  description: "Select device types to exclude from the integration to reduce the number of entities."
+Elevated tracing:
+  description: "Enable additional debug logging for troubleshooting."
+{% endconfiguration_basic %}
+
+## Data updates
+
+The integration receives real-time updates via MQTT. By default, it polls for updates every 30 seconds, but this can be configured in the integration options.
+
+## Supported functionality
+
+The integration automatically discovers and creates entities for all supported Victron devices on your system. The exact entities available depend on your specific Victron hardware configuration.
+
+### Entities
+
+The **Victron GX** integration provides the following types of entities:
+
+#### Sensors
+
+Read-only sensors for monitoring system metrics, such as:
+
+- Battery voltage, current, power, temperature, and state of charge
+- Solar panel voltage, current, power, and daily yield
+- Grid voltage, current, power, and energy consumption
+- Inverter input and output power, frequency, and state
+- <abbr title="electric vehicle">EV</abbr> charger status, power, and session energy
+
+For a complete list of supported entities, see the [auto-generated documentation](https://tomer-w.github.io/victron_mqtt/).
+
+#### Binary sensors
+
+Status indicators for various system states, such as:
+
+- Alarms and warnings
+- Connection status
+- Relay states
+
+#### Buttons
+
+Action buttons for triggering specific functions, like device reboot.
+
+#### Numbers
+
+Adjustable numeric settings for:
+
+- Current limits
+- Voltage setpoints
+- Power limits
+
+#### Selects
+
+Dropdown selections for:
+
+- Inverter mode (On, Off, Charger Only, Inverter Only)
+- <abbr title="electric vehicle">EV</abbr> charger mode
+- Battery charge mode
+
+#### Switches
+
+On/off controls for:
+
+- Relays
+- Device features
+
+#### Time
+
+Time-based settings for scheduled operations.
+
+## Troubleshooting
+
+### Cannot connect
+
+#### Symptom: Connection fails during setup
+
+#### Description
+
+The integration cannot establish a connection to your Victron device.
+
+#### Resolution
+
+To resolve this issue, try the following steps:
+
+1. Verify your Victron device is powered on and connected to your network.
+2. Check that the hostname or IP address is correct.
+3. Ensure that MQTT is enabled on your Victron device.
+4. Test connectivity from Home Assistant by opening a terminal and running:
+
+   ```bash
+   nc -zv <VICTRON_IP> <MQTT_PORT>
+   ```
+
+   Replace `<VICTRON_IP>` with your device's IP address and `<MQTT_PORT>` with the MQTT port (usually `1883` or `8883`). If you get a timeout or error, there is a network connectivity issue.
+
+5. If Venus OS is rooted (SSH access enabled):
+   - Use port `8883`
+   - Enable SSL
+   - Use username `root`
+   - Use the password you defined to protect the instance
+
+6. Consider using the bridged configuration if you're experiencing frequent connectivity issues or want to reduce load on your Venus device.
+
+### Authentication failed
+
+#### Symptom: Authentication error during setup
+
+#### Description
+
+The credentials provided are incorrect.
+
+#### Resolution
+
+1. Double-check the username and password if authentication is enabled.
+2. These are device credentials configured on the Victron device, not <abbr title="Victron Remote Monitoring">VRM</abbr> portal credentials.
+3. Verify the security profile setting on your Victron device under **Settings** > **General** > **Local Network Security Profile**.
+
+### No sensors appear
+
+#### Symptom: Integration sets up but no entities are created
+
+#### Description
+
+The integration cannot discover or create entities from MQTT topics.
+
+#### Resolution
+
+1. Verify that MQTT topics are being published by your Victron device.
+2. Check the Home Assistant logs under **Settings** > **System** > **Logs** for any error messages.
+3. Ensure the MQTT service on the Victron device is running and configured correctly.
+4. Try increasing the **Elevated tracing** option in the integration settings for more detailed logging.
+
+## Services
+
+### `victron.publish`
+
+The Victron integration exposes the `victron.publish` service, allowing you to publish a value to a specific metric on a Victron device.
+
+**Service:** `victron.publish`
+
+**Description:** Publish a value to a specific metric on a Victron device.
+
+**Fields:**
+
+- `device_id` (string): The device identifier to publish to.
+- `metric_id` (string): The metric identifier to publish to.
+- `value` (any): The value to publish to the metric.
+
+**Example service call:**
+
+```yaml
+service: victron.publish
+data:
+  device_id: "261"
+  metric_id: "generator_service_counter_reset"
+  value: 230.0
+```
+
+This will publish the value `85` to the `Soc` metric of the specified battery device.
+
+## Removing the integration
+
+This integration follows standard integration removal.
+After deleting the integration, go to the app of the manufacturer and remove the Home Assistant integration from there as well.