APNT-18 - Using a Secondary Switch with a Fibaro Module

IMPORTANT - Read this first!

This guide relates to the ORIGINAL Fibaro Universal Dimmer.

Do NOT follow this guide if you are installing the Fibaro Universal Dimmer 2.

You can cause damage to the device, your lighting circuit and your lights if you ignore this warning!

For assistance in installing your Fibaro Universal Dimmer 2 devices, please contact Technical Support.

The Fibaro modules have a neat feature that's not widely known.

This application note explains how to use the secondary (S2) switch input of the Fibaro Dimmer and Relay modules to directly control other associated Z-Wave devices.

Secondary Switch Input

The Fibaro modules have two switch inputs - S1 is used to control the local load physically connected to the module, while S2 I can be used to control the local load as well as other Z-Wave devices:

This feature makes the Fibaro modules very versatile and yet it's really easy to configure.

Using The Secondary Switch

By using the secondary (S2) switch input of a Fibaro Module you can easily control other Z-Wave devices. Figure 1 shows a simplified scheme where a Fibaro Dimmer is able to control a number of Z-Wave devices including other Fibaro modules, wall plugs and dimmer sockets.

Using the Secondary Switch with a Fibaro ModuleFigure 1: Simplified scheme to use a secondary switch (S2) with a Fibaro Module.


Once you have wired the modules into your installation, you just need to associate the Fibaro module (dimmer in this example) to the other Z-Wave device or devices. Fibaro uses Group 2 as the channel for this control, configuring this association is straightforward.

Follow the instructions in Application Note 19 - Associating Devices in Z-Wave Controllers - use Group 2 as the association group.

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