Thousands of Happy Smart Home Customers

But don’t just take our word for it...

We offer great products & great knowledge all backed up with great service - and our customers agree!

We’re very proud of our independent Excellent Trustpilot rating, backed up by the many repeat customers we’ve been supporting for years.


Read More


World-Class, Industry-Leading Technical Support - Forever Free

You’ll always have FREE access to our technical knowledgebase, application guides, YouTube tutorials & Customer Services, as well as all other online resources, help, white papers and articles.

If none of these answer your query you can also raise a ticket and get direct access to our team of smart home specialists for for assistance.


Access to technical specialists
100’s of in-depth help resources
Video guides via YouTube channel
Blog articles with product reviews & test results


The Vesternet Promise

As Founder & CEO of Vesternet, I personally guarantee your 100% satisfaction on any purchase.

I’d never want you to be unhappy with something you buy from us, so here’s my promise - you can return any unused products within 365 days. If you have problems with a new purchase, our support team will work with you to resolve. And if you still can’t get it working then you can return it within 14 days for replacement or refund. For full information take a look at our full returns policy.

In addition, here’s my personal email should you ever have any problems or feedback:

We’re not just a shop, we’re with you all the way on building your smart home.


Using a 3-Position Switch with a Fibaro Dimmer 2



IMPORTANT - Read this first!

This guide relates to the NEW Fibaro Universal Dimmer 2 module.

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

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


This application note shows how to use a Fibaro Universal Dimmer 2 module with a 3-position (On/Off/On) momentary switch.

It is based on a UK style 2-wire lighting system with no neutral at the switch.

3-Position Switch

A 3-position momentary, or retractive, switch has 3 positions and is also known as an ON/OFF/ON switch.

It normally stays in the central (Off) position, you can then press the top or bottom parts of the switch to move it into the On positions. As this is a momentary (retractive) switch, it only remains in the On state while you press it, it returns to the central Off state when the button is released.

Why use a 3-position Switch

This type of switch provides another way of controlling the Fibaro Dimmer 2 (and the light it is connected to):

  • Top ON
    • Press once and release - turns light onto full brightness or previously set dim level
    • Press and hold - increases brightness, releasing it keeps the lamp at that brightness
  • Bottom ON
    • Press once and release - turns light off
    • Press and hold - decreases brightness, releasing it keeps the lamp at that brightness

Installation and Configuration

The switch and Dimmer 2 module can be connected to the lighting system as follows.

Using a 3-position switch with a Fibaro Dimmer

Fibaro Dimmer 2 Parameter Setting:

The following parameters need to be set:

  • 20 - 2 - enables the dimmer to work with a 3-position switch (default 0)




Installing the Fibaro Dimmer modules involve working with 240V mains wiring. If you are not comfortable doing this you should consult a qualified electrician. This application note is provided as a guide, all work is are carried out at your own risk. Vesternet do not accept any responsibility or liability.


Copyright Vesternet 2015

Updated: 03/09/15

Please wait...

Item(s) Added Continue shopping or View cart & checkout
Continue shopping or View cart & checkout