Wireless push buttons without cables: adding Häfele Connect Mesh

Updated 9 October 2026Lighty

Battery-powered wireless push buttons from Häfele Connect Mesh can be added to Camper Jarvis. They need no cable: you put them wherever you need a switching point, at the bed, at the sliding door, in the bathroom or next to the sink.

What you need

  • A Lighty with firmware 0.4.7 or later. It receives the wireless push buttons.
  • One or more Häfele Connect Mesh 4-way wall push buttons (item no. 850.00.141), available from Häfele specialist dealers. They run on a CR2430 coin cell.
  • A SmartKnob. The wireless push buttons only work together with it, also during normal operation.

Pairing

You start pairing in the dashboard, and it takes around 20 seconds. You do not need the Häfele app for this. The dashboard shows the push buttons it has found in a list, and a push button is only added while you have pairing open in the dashboard. So the push button of your neighbour at the campsite never ends up in your system by accident. The pairing is kept after a restart, so you only do it once.

You can pair several push buttons with one Lighty, each with four buttons. After that you decide what each button does.

Assigning wireless push buttons to a light

In a light's widget, switch on the assignment under Wireless push buttons and choose the buttons that should operate this light.

Operation

A short press switches, a long press dims, and the next long press dims in the other direction. A double tap switches all lights, just like on the wired push button. You can also put a button on any device in the system, for example the water pump at the sink, the inverter at the bed or the fan in the bathroom.

Important: without the SmartKnob, the wireless push buttons do not respond, not even for the light on the Lighty. Your wired wall push buttons, on the other hand, keep switching even without the SmartKnob.

Removing a push button

If you remove a push button in the dashboard, it resets itself to its factory settings. You do not need to press any button combination on the push button.

Ideal for retrofitting and for van converters

In a finished build, no panelling has to come off and no cable has to be pulled. For van converters, every switching point without wiring saves material, time and weight, and the customer can add more push buttons themselves later.

What comes next

At the moment the wireless push buttons work via Lighty, and more modules will follow. Next, we are adding the 4-way push buttons from Shelly.

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.

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