At TILLUME, a 24V LED spot is not treated as a standalone lamp, but planned from the start as part of a modular 24V lighting system. The LED module, fixture housing, 24V DC power supply, controller and ceiling conditions all affect whether the spot will work cleanly in a real project. The LED module sets light quality, power, colour temperature and dimming path. The fixture housing defines installation type, appearance, glare control, cutout size, installation depth and future maintenance.

This guide shows where the TILLUME 24V modular lighting system fits, why TILLUME uses a modular product logic for 24V LED spots, and what to check in the project: selection order, fixture housing, ceiling and installation conditions, and the system check before ordering.

This guide helps you understand

• How the TILLUME 24V modular lighting system is structured, and why a 24V LED spot here is not the same thing as a simple GU10 or MR16 replacement.
• Why TILLUME uses a modular design for 24V LED spots, and what that means for light quality, maintenance, replaceability and later adjustments.
• A practical selection order for smart-home lighting projects: room style and lighting effect first, then LED module, fixture housing, power supply and control.
• What to check when choosing the fixture housing: recessed, surface-mounted or pendant solution, installation depth, cutout size, glare control, tilt, IP rating and maintenance access.
• Which ceiling and installation conditions should be checked before ordering: room height, ceiling structure, thermal space, cable space and access for future maintenance.
• Which system points must match before purchase: 24V DC power supply, controller channels, wiring layout, fixture housing, LED module and IP requirements.

The TILLUME modular 24V lighting system is a combinable low-voltage spot system. Instead of locking the light source, fixture housing and electrical components into one fixed product, it separates the LED module from the fixture housing. Light quality, installation type, room style and control path can therefore be selected more independently.

A complete TILLUME 24V LED spot is part of this modular 24V lighting system and usually includes these core elements:

• LED module – responsible for light quality, electrical parameters, wattage, colour temperature, CRI and dimming path.
• Fixture housing / mounting frame – responsible for installation type, appearance, cutout size, installation depth, glare control, tilt and IP rating.
• 24V DC power supply – supplies the LED module with stable low-voltage power.
• Controller / dimmer – converts a higher-level control signal, for example DALI via a suitable DALI dimmer or KNX via a suitable KNX actuator, into 24V PWM outputs for the LED module. In Loxone projects, TILLUME remains on the 24V LED load side; protocol integration into the closed Loxone system is not provided by TILLUME.
• Gateway – connects the lighting system to a higher-level smart-home or building control system. A TILLUME gateway is currently in project planning; this level is intended for later system expansion and completion.

In a real residential or commercial building, one lighting point has to satisfy several requirements at once: light quality, appearance, ceiling conditions, control system, maintenance and later replaceability. A one-piece spot ties all of this to one product. That may look simpler when selecting products, but it leaves little room for later adjustments, upgrades or style changes.

Different rooms often need different fixture shapes, installation types or protection ratings. A single one-piece fixture range rarely covers every case. Mixing products from several manufacturers can then make light colour, colour rendering and dimming behaviour harder to keep consistent. The TILLUME modular system solves this by combining different fixture housings with matched LED modules, so the room design can change without losing the same light quality logic.

That is why TILLUME develops 24V LED spots modularly. In a project, the visible housing, installation type and control path can follow the room. The light quality, colour rendering and dimming behaviour stay within the same matched 24V system.

• Modular design is part of the product principle, not a separate sales argument. Within a matched 24V system, the LED module, fixture housing, 24V power supply and controller can each be selected for the room, installation space and desired lighting effect.
• At the LED module level, light quality, wattage, colour temperature, CRI/R9, dimming path and electrical parameters can be selected for the application.
• At the fixture housing level, shape, colour, installation type, cutout size, installation depth, glare control, tilt, IP rating and maintenance access can be selected to suit the room, ceiling and design goal.
• At the 24V power supply level, output power, power reserve, form factor, mounting location and wiring layout can be selected according to the number of fixtures, cable length and available installation space.
• At the controller or dimmer level, channel count, channel load, dimming type and control path can be selected according to the project. When DALI or KNX is used, check the PWM output of the respective dimmer or actuator. In Loxone projects, only the 24V LED load side is relevant for TILLUME; the protocol and component level remains within the Loxone system.

In a smart-home lighting project, the selection of a 24V LED spot does not usually start with the LED module or with the housing. It starts earlier: what interior style, ceiling appearance and lighting effect should the room have in the end? Once style, use and desired atmosphere are clear, the LED module, fixture housing, power supply and control path can be defined more sensibly.

The practical order depends on the project. In design-led rooms, the visible fixture housing is often narrowed down early because it shapes the ceiling appearance. If light quality, colour temperature or dimming is more critical, the LED module becomes the technical reference point earlier. Power supply, controller and dimmer are planned separately in the 24V system; the fixture housing is not designed to hold the driver.

For most smart-home residential projects, start with room style and lighting intention. Then narrow down housing type and lighting effect, choose the suitable LED module and control path, and finally check ceiling, wiring, power-supply position and maintenance access before ordering.

Once room style and lighting intention are clear, the next step is to choose the right fixture housing. The housing determines not only the appearance, but also installation type, cutout size, installation depth, glare control, tilt, IP rating and future maintenance access.

TILLUME offers recessed, surface-mounted and pendant versions for LED spots. The right choice depends on the ceiling construction, available space and the visible look you want in the room.

The fixture-housing range is still growing. At the moment it covers common residential and project requirements. Some new ideas come directly from customer projects. One customer, for example, had very little ceiling space: there was not enough depth for a classic recessed spot, but a tall surface-mounted housing would have looked too heavy.

That requirement led TILLUME to develop a flatter housing solution for limited ceiling spaces. It still uses a standard cutout size, but needs less depth inside the ceiling. This helps in projects where a normal recessed spot needs too much space and a tall surface-mounted housing is not wanted visually.

Depending on the application area, this housing solution is available in IP20 and IP44. IP20 is suitable for normal indoor rooms; IP44 is intended for areas with higher requirements for moisture or splash protection.

If your project has similar requirements, such as limited installation depth, a specific cutout size, a lower surface-mounted height, a special finish or a higher protection rating, we welcome concrete feedback from real projects. If the same requirement appears in several projects, we can evaluate it for further product development.

Installation type: recessed, surface-mounted and pendant

• Recessed – for ceilings with cavity space or prepared cutouts. Visually discreet, but cutout size, installation depth and thermal space must match.
• Surface-mounted – when no cutout is possible or ceiling space is limited. The fixture remains visible on the ceiling surface.
• Pendant – for dining tables, bars or accent areas where a hanging fixture is desired.

Cutout size and installation depth

For recessed fixtures, cutout size and installation depth must be checked in advance. In renovation projects, the existing cutout should be measured. In new builds, the cutout should be planned according to the housing specification before drywall work. TILLUME product pages usually provide information on cutout size and recommended installation depth to help select the right housing.

Tiltable and low-glare recessed spots

Tiltable housings are suitable for directed light – for example on walls, artworks, work surfaces or exhibition areas. For even general lighting, not every spot needs to be tiltable. Glare control affects visual comfort, especially with low room heights or positions where the light source is directly in the field of view.

Colour and appearance

Colour, shape and frame of the fixture housing directly affect the ceiling appearance. White housings blend into light ceilings; black or two-tone housings emphasise the design aspect or create contrast with fittings and furniture. This is a housing decision and should not be mixed up with the light quality of the LED module.

IP rating

In normal dry indoor rooms, IP20 is usually sufficient. For bathrooms, damp rooms or areas with possible splash water, a higher protection rating such as IP44 should be selected. The specific installation area, moisture exposure and electrical regulations are always decisive.

Product detail with a maintenance advantage: With many TILLUME 24V LED spots, the fixture housing is fixed in the ceiling first. The LED module is then inserted from below. If the module later needs to be checked, replaced or adapted to a new lighting requirement, the whole fixture does not automatically have to be pulled out of the ceiling.

This is useful in KNX or DALI projects that may be adjusted after commissioning. It reduces service work and helps protect the ceiling, cutout edge and surface finish. The advantage shows up during installation, but also later during maintenance and module replacement.

Before an LED spot is selected or ordered, check the ceiling conditions. Whether a spot can actually be mounted depends not only on the LED module and fixture housing, but also on room height, ceiling structure, installation depth, cutout size, thermal space and later maintenance access.

For the TILLUME modular system, maintenance access is especially important: ideally, the housing is installed in the ceiling, the LED module is inserted from below and, if needed, removed from below as well, without dismantling the entire fixture. This reduces the risk of damaging the ceiling, cutout edges or plaster.

Before ordering, check whether LED module, fixture housing, 24V power supply, controller and installation conditions fit together. This checklist does not replace the final assessment by an electrician or installer, but it helps avoid typical mismatches before purchase.

Have the final installation assessment carried out by your electrician or specialist installer.

Conclusion

Choosing a TILLUME 24V LED spot does not mean simply picking a spot from a product list. It means evaluating the LED module, fixture housing, power supply, controller and ceiling conditions as one overall system.

The LED module defines light quality, colour temperature, wattage and dimming path. The fixture housing defines appearance, installation type, cutout size, installation depth, glare control, tilt and maintenance access. With TILLUME's modular construction, these parts can be selected, combined and serviced separately. That is useful in KNX/DALI projects where commissioning, later adjustments and module replacement are part of the real project lifecycle.

Before ordering, clarify lighting needs and module specifications, then check ceiling height, installation space, cutout size, cooling, cables and front-installation feasibility. Once these conditions are clear, you can choose the suitable TILLUME 24V LED module and the matching ceiling lights and fixture housings.