From a Coin in the Freezer to KNX: What Can a Smart Home Really Do?

Anyone who leaves a home empty for long periods may know this old trick. You put a glass of water in the freezer, let it freeze, and place a coin on top of the ice. If the coin is still on top when you get back, you can relax. If it has sunk to the bottom, the ice melted at some point and the power was off for a long time.

That little trick answers a big need: knowing what happened while you were away. In Kuşadası, where summer homes and villas often stand empty for weeks in winter, the question never really goes away.

The coin only tells you that something happened. Today's smart buildings can do far more, and KNX is one of the strongest examples.

Is Every Screen on the Wall a "Smart Home"?

In many projects, a sleek touchscreen is mounted by the entrance and presented as the "smart home". More often than not, it's an intercom, a video door phone. A good intercom is genuinely useful, but its job is communication and access control at the door. Running a home's lighting, shading, climate and electrical infrastructure is a different job.

They aren't rivals; in a well-designed project they complement each other. For a closer look, see our article Smart Building Automation: Critical Differences Between KNX and Intercom.

What Is KNX, in Short?

KNX is an open, international standard for home and building automation.

• International standard: It is published as the international standard ISO/IEC 14543-3 and the European standard EN 50090.
• Proven technology: Its roots go back to the early 1990s, and today it is used in homes, hotels, offices and large buildings in many countries around the world.
• Multi-vendor: KNX-certified products from hundreds of manufacturers can work together in the same system, so you're not tied to a single brand.
• Distributed design: Each device does its own job; the system doesn't depend on a single central box.

What Can KNX Do?

Depending on the devices chosen and the project, a single KNX installation can handle:

• Lighting: Switching, dimming, lighting scenes, and automatic control with motion and presence detection.
• Curtains and blinds: Automatic movement based on sun, time or wind; darken the whole house with one button.
• Heating, cooling and ventilation: Room-by-room temperature control and an economy mode when nobody is home.
• Scenes: One-touch setups like "Coming Home", "Leaving Home" or "Night". For example, "Leaving Home" can switch off the lights, close the blinds and set the climate to economy.
• Security integration: Working together with alarms, cameras, intercoms and water leak sensors.
• Energy visibility: With suitable metering devices, seeing how much each circuit consumes.
• Remote access: Checking and controlling your home from your phone over the internet.
• Freedom to expand: Thanks to the open standard, devices from other manufacturers can be added to today's system later on.

What About Power Outages?

Back to the coin's question: with suitable devices, logging power outages and sending a notification to your phone is possible. Likewise, there are devices that can automatically put a circuit back into service after the residual-current device trips.

These aren't installed the same way in every home; they are planned per project, and what can be done depends on the devices chosen. This is not a 24/7 monitoring service; the system keeps you informed, and the decisions stay with you.

Comparison: A Typical Intercom Panel vs KNX

Start Today, Expand Tomorrow

You don't have to install everything on day one. Because KNX is an open standard, a board built for KNX from the start can be extended later: start with basic automation today and add energy visibility, outage notifications or new scenes down the line.

For existing homes: KNX devices can be added later if there is space in the distribution board. This needs to be seen on site, so we start with a free site survey of the board.

For architects and contractors: The easiest time to plan KNX is while the electrical design is being drawn. Planning the KNX line early and leaving spare space in the board makes later changes much easier. We're happy to work with your team at this stage.

Installation, Training and Support

Our own team designs and installs our KNX projects. After handover, we give the homeowner training on how to use the system. When the house is sold, we train the new owner as well, so the system changes hands properly along with the house.

We serve Kuşadası and provide same-day support where possible if something goes wrong. You can find the scope of our service on our Smart Hotel and Building Automation Systems page.

Frequently Asked Questions

What is KNX, and which standard is it based on?

KNX is an open, international standard for home and building automation. It is published as the international standard ISO/IEC 14543-3 and the European standard EN 50090. KNX-certified products from different manufacturers can work together in the same system.

Can KNX let me know when the power goes out?

Yes, with suitable devices. Outage logging and notifications are planned per project, and what can be done depends on the devices chosen. This is not a 24/7 monitoring service.

Can KNX be added to my existing home?

Yes, if there is space in the distribution board. It needs to be seen on site; the site survey is free.

Do devices from different brands work together?

Yes. Because KNX is an open standard, KNX-certified products from different manufacturers can be used in the same system, and the system can be expanded later.

If the house is sold, how does the new owner learn the system?

We train the homeowner after handover. When the house is sold, we train the new owner as well.

In Short

• KNX is an open, international standard defined in ISO/IEC 14543-3 and EN 50090.
• Lighting, shading, climate, scenes, security integration and energy visibility come together on one infrastructure.
• Outage logging, notifications and automatic reclosing are possible with suitable devices and are planned per project.
• Thanks to the open standard, the system can be extended later; it can be added to existing homes if there is space in the board.
• We train the homeowner at handover, and the new owner if the house is sold.

Conclusion: Leave Home Without Worrying

The coin in the freezer did its job for years, but it only spoke once you got home, and all it could say was "something happened." A properly designed KNX system makes your home more comfortable while you're in it and easier to understand while you're away.

Today we bring the experience we've built in the field since 2003 to Kuşadası under the Kodsis roof. For your villa, summer home or the residential project you're working on, the site survey is free. We can come and take a look, or spread your plans on the table and talk it through.

Drop by our Kuşadası office for a coffee. You can reach us through our contact page.