Does my smart home still work if the internet goes down?
In short and in plain language
That depends on the system. Some things work without internet too. For example, you can still switch the light at the wall switch.
What runs through an app or your voice usually needs internet. An app is a small program on your phone.
During setup we make sure lights and heating stay usable where possible. We explain what still works if there is a fault.
That depends on the system, but it can be planned for. Many basic functions continue to work without internet, such as switching a light via the normal wall switch or a fixed heating schedule that runs locally. Functions that rely on the phone app, voice commands or a cloud service, on the other hand, usually need a connection.
Already during setup we make sure that important things like lights and heating stay operable even during an internet outage where possible, and explain in plain terms what still works in each case. So you are not left literally in the dark when there is a fault. You can find more on the careful planning of your system under smart-home consultation.