Loxone automation, Incase the internet (WAN) breaks down, will the smart home devices be operational?

Yes. Loxone is specifically designed to operate without an internet connection.

What Continues to Work During a WAN Failure

If the internet goes down but your Loxone Miniserver, network switches, and power remain operational:

✅ Lighting control

✅ HVAC and air conditioning automation

✅ Motorized blinds and curtains

✅ Presence and motion-based automation

✅ Security functions (alarms, door contacts, occupancy simulation)

✅ Audio systems integrated locally

✅ Touch switches and sensors

✅ Scheduled events and timers

✅ Communication with local devices using:

  • Tree

  • Air

  • Modbus

  • KNX

  • DALI

  • Local HTTP/TCP integrations

What Stops Working

❌ Accessing your home remotely through the Loxone App when away from home

❌ Cloud-based integrations (depending on the service)

❌ Internet-dependent weather forecasts

❌ Voice assistants such as Siri, Alexa, or Google Assistant

❌ Email notifications (unless internet is restored)

Example

Suppose your home has:

  • Loxone Miniserver

  • DALI lighting

  • AC control via Modbus

  • Motion sensors

  • Shading automation

If your ISP connection fails:

  • Lights still turn on/off automatically.

  • AC continues to follow schedules.

  • Blinds react to local sensors.

  • Security system remains active.

  • Touch switches work normally.

The house continues to function because the automation logic runs inside the Miniserver, not in the cloud.

If the WAN (internet) fails / disconnect, Will Apple HomeKit-based smart home continue to operate ?

Yes, Apple HomeKit can continue to operate during a WAN (internet) outage, but there are some important conditions.

The following will generally continue to work:

✅ HomeKit automations (timers, sensor-triggered actions, scenes)

✅ Control from your iPhone or iPad while connected to your home Wi-Fi

✅ Communication between HomeKit devices and your Home Hub (such as a HomePod or Apple TV)

✅ Matter and Thread devices that support local control

For example:

  • A motion sensor turns on a light.

  • A wall switch controls a smart light.

  • A sunset-based scene that has already been scheduled by the Home Hub.

What Stops Working

❌ Controlling your home from outside the house

❌ Notifications sent to your phone when you're away

❌ Devices that depend on the manufacturer's cloud service

❌ Some Siri requests that require internet access

Important Caveat

HomeKit is designed for local operation, but not every HomeKit-compatible device is. Some manufacturers still rely on cloud services for certain functions. Devices from companies such as Aqara, Eve Systems, and many Matter/Thread products tend to have strong local support, while some Wi-Fi devices may have cloud dependencies.