More push buttons with Lighty Extension

Updated 15 October 2026Lighty

Lighty has one input for a push button. With Lighty Extension you can connect up to five push buttons, one for each light.

You then switch your lights at the wall push button as usual, and also on the SmartKnob and in the dashboard.

How to connect Lighty Extension

Wiring diagram Lighty with Lighty Extension: battery, LED strip, IN to IN, GND to GND, push buttons on 1 to 5 and ground

  1. Connect Lighty to Lighty Extension: both are marked IN and GND. Connect IN to IN and GND to GND. That is two cables.
  2. Connect the push buttons: each push button has two connections. Connect one to an input on the Extension, that is 1, 2, 3, 4 or 5. Connect the other to ground, in other words negative (GND).

For ground you can use the GND terminal on the Extension. But you do not have to: any ground near the push button works just as well. Then a single cable from the Extension to the push button is enough. In the picture, that is the dashed line.

Which cable: 0.25 to 0.5mm², solid or flexible (for example FLRY-B), stripped 6mm, bare wire without ferrules. Push solid cable straight in. For flexible cable, press the small release button with a narrow screwdriver while you push it in. All details are in "Connecting Lighty".

Without a SmartKnob

Push button 1 switches channel 1, push button 2 channel 2 and so on. A short press switches, press and hold dims. There is nothing to set up. More on this in "Lighty without a SmartKnob".

With the SmartKnob

Each input belongs to one channel: input 1 is R, 2 is G, 3 is B, 4 is WW and 5 is CW. In the dashboard you decide which channels make up a light. Its push button goes on the input with the number of one of these channels. Example: a warm and cold white strip on G and B gets its push button on input 2 or 3.

You can also use several push buttons for one light, for example at the entrance and at the bed. Connect them in parallel to the same input. Then you do not need two-way switching. More on this in "Switching one light in the camper from two places".

After pairing, a push button only switches once you have switched it on in the light widget under Push button.

Important: push buttons only. Switches do not belong on Lighty Extension. A switch stays closed after you flip it. If two switches are closed at the same time, Lighty cannot tell them apart. Connect a normal switch directly to Lighty, without the Extension.

Related questions

What can I control with Lighty?

Lighty controls all the lighting in your camper over 5 independent channels. Everything is possible, from a single white strip to full RGBWW lighting with colour plus warm and cool white. Or you connect up to five individual lights, such as kitchen, bathroom, bed left, bed right and outdoor light, each on its own. You set colour, colour temperature, brightness and entire light scenes just as you like.

Does Lighty work on 12V and 24V?

Yes, both without any changes. Lighty works in the range from 9 to 36V, so it is just as much at home in a 12V panel van as in a 24V motorhome.

Do I need a SmartKnob for Lighty to work?

Not necessarily. From firmware 0.4.7, a new Lighty responds to its push buttons straight away, without any setup. With Lighty Extension, each of the five push buttons switches its own channel. A short press switches, press and hold dims. With just one push button and no Lighty Extension, you switch channel 2. Even if your SmartKnob ever fails, your push buttons keep switching and dimming. The SmartKnob adds colours, white light (warm white and cool white as one light), scenes, the dashboard, automations, the wireless push buttons and the double tap for all lights.

How is Lighty connected, and what is in the box?

Connection is deliberately kept simple: power and light channels go into high-quality Phoenix lever terminals, almost tool-free, safe and reusable. You wire the push button to the supplied pluggable spring terminal connector and then simply plug it in. In the box you will find Lighty, four mounting screws and the pluggable spring terminal connector for the push button.

Which LED strips work with Lighty?

Lighty controls single-colour and multi-colour LED strips with shared colour channels, meaning normal single-colour strips as well as RGB, RGBW and RGBWW strips. Addressable pixel strips (such as WS2812), where every LED is controlled individually, are deliberately not supported. Lighty is not designed for them.

How many metres of LED strip can I connect?

What counts is not the length but the current: Lighty handles 20A in total. For example, a COB strip with 14W per metre draws about 1.2A per metre at 12V. Two strips of 3m each come to roughly 7A and fit easily. Several strips may also share one channel.

See all questions

Still have questions? We'll help you personally.

Get in touch