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KNX Google Home Integration: A Guide for Smart Home Automation

KNX -Google Home Integration
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As you continue advancing your smart home capabilities, you may be exploring ways to integrate the open-standards KNX platform with the ever-popular Google Home ecosystem. Integrating these systems provides a powerful combination of capabilities, allowing enhanced control and automation of devices throughout your home using voice commands, schedules, and scenes with Google Home as well as the flexibility and interoperability of KNX. This guide will walk you through the necessary steps to link your KNX installation with Google Home for a seamless smart home experience. With some configuration of both systems and a KNX-Google Home integration device, you’ll be well on your way to managing lighting, HVAC, security, and more using the simplicity of Google Home and the power of KNX.

What Is KNX and How Does It Work?

KNX is an open standard for commercial and residential building automation. It allows products from different manufacturers to be integrated into one smart home system.

How KNX Works

KNX uses a decentralized approach where each device on the network has equal access. There is no central controller. Instead, the devices themselves determine how to route and share information with each other over the KNX bus.

  1. KNX devices like sensors, actuators, and interfaces are installed in the building and connected to the bus. The bus is the network cable that links all KNX devices.
  2. Each KNX device has its own electronic address to identify itself. This allows for two-way communication between devices on the network.
  3. The devices can be programmed to automate specific functions in response to triggers. For example, motion sensors can detect when someone enters a room and signal the lights to turn on. Or a timer can automatically lower window blinds at sunset.
  4. KNX uses a common, standardized communication language so that devices from different manufacturers can work together seamlessly. This interoperability is a key benefit of KNX for smart home integration.

By connecting your KNX installation to Google Home, you get voice control and automation of all your KNX devices. Lights, heating, blinds, and more can be controlled by voice commands or customized Google Home routines and schedules. KNX with Google Home provides a simple yet powerful smart home solution.

Benefits of Integrating KNX With Google Home

Integrating your KNX home automation system with Google Home provides several benefits:

Increased Convenience and Control

Connecting KNX to the Google Home ecosystem allows you to conveniently control your smart home devices using voice commands through the Google Home speakers or mobile app. You can turn lights on or off, adjust the thermostat, close the blinds or do various other tasks with a simple voice command. This hands-free control and automation enhances your convenience and provides a seamless smart home experience.

Expanded Compatibility

Linking KNX to Google Home expands the compatibility of your system to include hundreds of Works with Google certified smart devices from brands like Philips Hue, Nest, ecobee and more. This expanded compatibility provides more options to automate and control in your smart home.

Enhanced Security

When integrated, KNX and Google Home work together to provide an extra layer of security for your smart home. You can set up voice recognition to only allow certain users to control and access the system. You can also use geofencing to have the system arm or disarm automatically when you leave or enter the premises. These security features provide peace of mind that your smart home is protected.

Remote Access and Monitoring

The Google Home app allows you to remotely monitor and control your KNX smart home system from anywhere. You can adjust the temperature, turn on lights, check if doors are locked and more, all from your mobile device. This remote access and monitoring capability provides convenience and oversight of your smart home when you’re on the go.

Integrating KNX with Google Home unlocks these benefits and more. With the two systems working together in unison, you can have a seamless, secure and convenient smart home experience. Expanding into voice control and the smart home ecosystem opens up a whole new level of home automation potential.

Required Hardware for KNX Google Home Integration

To integrate KNX with the Google Home smart speaker, you will need a KNX IP interface and a KNX USB interface.

KNX IP Interface

The KNX IP interface connects the KNX bus to your local area network (LAN) and the Internet, enabling communication between the KNX installation and the Google Home. It translates the KNX telegrams into IP telegrams and vice versa. The IP interface is connected directly to the KNX bus and to the router. Popular options include the Gira KNX IP Interface and the Schneider Electric KNX IP Interface.

KNX USB Interface

In addition to the KNX IP interface, you will need a KNX USB interface to connect your Windows PC to the KNX bus during the integration process. The USB interface is only required temporarily during setup to program the KNX IP interface. Once programming is complete, the USB interface can be disconnected. Look for a KNX certified USB interface from manufacturers like Weinzierl or ETS.

With these two essential pieces of hardware-the permanent KNX IP interface and the temporary KNX USB interface-you will have the basic components to get started with integrating your KNX smart home installation with the Google Home and enabling voice control of devices like lights, thermostats, blinds and more. The IP interface handles the connection between the KNX bus and your network, while the USB interface is only needed during initial programming to configure the IP interface to work with your specific KNX system and components. By purchasing certified KNX interfaces, you can ensure full compatibility and support for integrating with the Google Home smart speaker.

Setup and Configuration Steps for KNX-Google Home

To integrate your KNX home automation system with Google Home for voice control, there are a few setup steps to complete.

Connecting KNX to the Google Home app

  1. First, enable the Google Home app on your iOS or Android device and sign in with your Google account.
  2. Next, in the Google Home app, select “Add” in the top left to add a new device. Choose “Set up device,” then select “Have something already set up?”
  3. Select “KNX” from the list of device types. The Google Home app will now search for your KNX installation on the local network.
  4. Once your KNX system is discovered, you will be prompted to enter its IP address and port number. You can find this information in your KNX system’s configuration. Enter the details to link your KNX system to the Google Home app.

Configuring rooms and devices

  1. In the Google Home app, you will now see your KNX system listed as a linked service. Tap on it to view and control your KNX devices.
  2. Create rooms to organize your KNX devices by location in the home. Give each room a name like “Living room,” “Kitchen,” or “Bedroom.” Add KNX devices to the appropriate rooms.
  3. Ensure each KNX device has a unique and descriptive name to make voice commands as simple as possible. For example, name dimmable lights as “Ceiling light” or “Table lamp.”
  4. Test that you can control each KNX device with voice commands to Google Home speakers or the Google Home app. Make any changes needed to the device names or room assignments to optimize the voice control experience.

With your KNX system now linked to Google Home, you’ll be automating and controlling your smart home in no time using simple voice commands. Let me know if you have any other questions!

Tips for Using Google Home to Control Your KNX Devices

To get the most out of using Google Home to control your KNX devices, follow these tips:

Set Up Your KNX IP Interface

The first step is to connect your KNX installation to your home Wi-Fi network. You’ll need a KNX IP interface, which acts as a gateway between KNX and IP networks. Connect the interface to your KNX bus and router, then configure it with your Wi-Fi network’s SSID and password.

Add the KNX Smart Home Skill

Enable the KNX Smart Home skill in the Google Home app. This skill allows Google Home to discover and control your KNX devices. Link the skill to your KNX IP interface.

Name and Group Your Devices

Give your KNX devices friendly names and organize them into rooms, areas or groups in the KNX software (e.g. ETS). This makes the devices easier to find and control with Google Home.

Learn the Available Voice Commands

Familiarize yourself with the voice commands you can use to control your KNX devices. You can turn devices on/off, adjust dimming levels, change RGB colors, control blinds/shutters and more. Examples include:

  • “Hey Google, turn on the living room lights”
  • “Hey Google, set the bedroom dimmer to 50%”
  • “Hey Google, open the kitchen blinds”

Test and Troubleshoot

Test your KNX devices with Google Home to ensure everything is working properly. If a device isn’t responding, double check that it’s properly connected and configured in your KNX software and the Google Home app. You may need to resync the KNX Smart Home skill.

Following these tips will allow you to seamlessly integrate and control your KNX smart home installation using simple Google Home voice commands. Let me know if you have any other questions!


As you have seen, integrating KNX with Google Home provides significant benefits for smart home control and automation. With a few configuration steps, you can enable voice commands and routines to control your KNX-based lighting, heating, security, and multimedia systems through the Google Home platform. The integration allows you to take full advantage of the intelligent features of KNX while leveraging the convenience, natural language processing, and third-party integrations of Google Home. For homeowners looking to enhance their smart home capabilities, connecting KNX and Google Home is a perfect solution to gain more comfort, security, and energy efficiency with an intuitive and user-friendly interface. The integration of these technologies provides the best of both worlds for smart home automation.

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