SWITCH | MATA Recessed

The MATA Recessed Switch is part of a universal line of plastered switches created in collaboration between Sumum and Belgian design studio STUDIO STRAF. Grown from a shared love for craft, geometry and pure materials, MATA lets the switch disappear into the wall finish while still reading as a small, precise piece of architecture.

The word “MATA” comes from Māori, where it refers to a bullet or rounded form – a direct reference to the delicately shaped push buttons. These refined “bullet” buttons are arranged in strict geometric compositions, following sacred proportions and a calm, minimalist language that fits seamlessly in contemporary interiors.

In the recessed version, MATA is built into the wall with a build-in kit so the front plate can be skimmed, plastered or finished in the same material as the surrounding surface – from lime plaster and microcement to stone cladding or timber panelling. The result is a switch that practices the art of camouflage: it becomes part of the wall, quietly highlighting the texture and colour instead of interrupting it. 

At Numa Home, we recommend the MATA Recessed Switch for projects where wall finishes are key: plaster-rich Dutch townhouses, minimal concrete homes, calm Turkish villas, boutique hotels and galleries. It brings a tactile, handcrafted feeling to the wall while staying completely in line with the architecture.

Designed by STUDIO STRAF and crafted by Sumum in Belgium – curated by Numa Home.

Numa Home is the official distributor of Sumum in the Netherlands and Turkey. For orders outside these countries, please contact Sumum directly.

Production & lead times

Sumum products are made to order in Belgium. Delivery happens in two stages:

First delivery – internal mechanisms
– Lead time: ≈ 4–6 weeks
– The electrician can already mount and wire these in the wall or panel.
– As soon as they are installed, the installation is fully functional.

Second delivery – brass cover plates
– Lead time: ≈ 8–12 weeks
– The solid brass plates are clicked onto the mechanisms on site once all finishing works are done.

Two-stage delivery
This two-stage approach keeps the project moving: first the technical installation, later the finished brass plates once painting and wall finishes are complete.

Made-to-order & order changes
Every Sumum piece is custom-built in your selected configuration and finish.

Once the order is confirmed, specifications and quantities cannot be modified or cancelled.

For any questions or updates, please quote your order reference and write to info@numahome.nl.

Countries

Netherlands
Numa Home is the official distributor of Sumum in the Netherlands.

Orders are shipped from Belgium to your address or project site. Once production phases are completed, shipping within the Netherlands usually takes a few working days.

Turkey
Numa Home is also the official distributor of Sumum in Turkey.

We organise transport from Belgium to Turkey. Transit time is typically around 7–10 working days after dispatch, depending on destination and shipment size. Exact costs and timings are calculated per order.

Other countries
For orders outside the Netherlands and Turkey, please contact Sumum directly to discuss availability, local partners and shipping options.

We work closely with architects and interior designers on a project basis.

Please contact us for B2B conditions, samples and project pricing in the Netherlands and Turkey via info@numahome.nl

Electrical concept
– Action: momentary push-button – returns to its original position after each press.
– Contact type: potential-free (dry contact), designed for low-voltage control.
– Typical use: MATA sends commands to relays, dimmers or smart controllers in the electrical cabinet; it does not switch 230 V loads directly.

System integration
– Compatible with KNX, QBUS and other bus or relay-based systems, via their respective binary input / push-button interfaces.
– Can be combined with DALI / DALI-2 via push-button couplers, for scene and dimming control (project-based).
– Works in both classic centralised panels and advanced home automation environments, depending on the chosen modules.

Layouts & dimensions
– Available button configurations: 1, 2, 4, 6 or 8 buttons.
– Typical recessed front sizes (approx.):
• 1–4 buttons: around 85 × 85 mm
• 6 buttons: around 85 × 118 mm
• 8 buttons: around 85 × 151 mm (metric conversion of published sizes).
– Installed in a dedicated build-in kit / back box, designed for seamless plaster integration.

Use cases
– High-end residential projects, boutique hotels, wellness clinics, galleries and hospitality spaces.
– Ideal wherever you want the switch to visually disappear into the wall, while still offering precise and tactile control.

Distribution
– Numa Home is the official distributor of Sumum in the Netherlands and Turkey.
– For projects outside these countries, please contact Sumum directly.