2026.5.0
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Denon RS232

The Denon RS232 integrationIntegrations connect and integrate Home Assistant with your devices, services, and more. [Learn more] lets you control Denon receivers by connecting to their RS232 serial port. By connecting the receiver to your Home Assistant server using a serial (RS232) cable or a USB-to-serial adapter, you get local control with push-based state updates.

Prerequisites

  • A Denon receiver that supports control over its RS232 serial port.
  • A physical serial connection between your receiver and the system running Home Assistant, or ESPHome-based serial proxy.

Configuration

To add the Denon RS232 hub to your Home Assistant instance, use this My button:

Manual configuration steps

If the above My button doesn’t work, you can also perform the following steps manually:

  • Browse to your Home Assistant instance.

  • Go to Settings > Devices & services.

  • In the bottom right corner, select the Add Integration button.

  • From the list, select Denon RS232.

  • Follow the instructions on screen to complete the setup.

Supported functionality

The integration adds media player entities as an entityAn entity represents a sensor, actor, or function in Home Assistant. Entities are used to monitor physical properties or to control other entities. An entity is usually part of a device or a service. [Learn more] for your receiver.

Media player controls

For supported receivers, you can use Home Assistant to:

  • Turn the receiver on and off
  • Change the volume
  • Mute and unmute the main zone
  • Select the input source

Zones

If your receiver supports additional zones, Home Assistant adds separate media player entities for those zones.

  • Main zone
  • Zone 2
  • Zone 3

The available zones depend on your receiver model.

Source selection

The available input sources depend on the receiver model you select during setup.