Related guide

Why the 2400-4000K option helps with pinkish middle CCT

If a project is sensitive to pinkish tones around the middle CCT range, start with the 2400-4000K option. The guide explains the color shift and why this range can produce a cleaner warm-to-neutral transition.

How max power output works with a 4+4W Tunable White module

In max power output mode, both WW and CW channels can be fully open around the middle CCT range, allowing the 4+4W module to reach about 8W total output.

LOW DIM

Low-brightness dimming support

TILLUME spot modules can reach very low dimming levels without making the scene feel abrupt. As a planning reference, minimum brightness is about 1% at 4 kHz and about 0.3% at 1 kHz, depending on the controller and system configuration. The modules support PWM up to 6 kHz; most projects should stay below 4 kHz.

VOLTAGE-DROP FRIENDLY

More tolerant of 24V voltage drop

Voltage drop is common in 24V constant-voltage lighting systems, especially on longer cable runs. TILLUME spot modules are more voltage-drop-friendly because Expert items can work down to 21.5V input and Master items down to 23V input, giving more usable tolerance on site.

MODULAR

Modular design for maintenance

The GU10/MR16-based module fits many traditional luminaire formats and matched TILLUME housings, making installation, replacement and future maintenance cleaner than fully integrated spot solutions.

Define the room scenes

Decide whether the zone needs warm evening light, neutral everyday light, cool working light, or a defined circadian-style scene schedule.

Choose the CCT range

Select 2200-6500K for HCL schedules and strong warm-to-cool contrast, or 2400-4000K for Dim to Warm scenes and users who are sensitive to middle-CCT deviation from the Planckian locus.

Choose power by illuminance need

Use the required brightness level and room function to choose 4+4W, 6+6W or 8+8W. Select the power level by maximum light output first, then use dimming for comfort and atmosphere.

Choose Ra and R9 by lighting demand

Use Expert for general rooms where Ra >90 is sufficient. Review Master when faces, wood, food, artwork, red fabrics or premium interior materials need stronger color rendering.

Match the final 24V PWM output

For DALI DT8, KNX or Loxone, confirm that the last actuator or controller provides two 24V PWM channels for WW and CW. Check channel load, WW/CW mapping, max-output behavior, PWM frequency, dimming floor and a 24V DC power supply with about 20% reserve.

Check installation fit

Confirm module format, housing or frame, cable route, voltage drop, heat dissipation and available ceiling space before final ordering.

QCan these Tunable White LED spots be connected directly to DALI, KNX or Loxone?

No, not directly. These spot modules are designed for high-quality 24V constant-voltage lighting zones in KNX, DALI or Loxone systems. The final two-channel 24V PWM output is what turns the system logic into clean WW/CW control, dimming behavior and CCT transition at the spot.

QShould I choose 2200-6500K or 2400-4000K?

Choose 2200-6500K when the project needs a wide Tunable White range for HCL scenes, sunrise-to-sunset schedules, daylight-style control or strong visual change between warm and cool white. Choose 2400-4000K when the project focuses on Dim to Warm behavior, private residential interiors and avoiding a pinkish impression in the middle CCT range. They are different application ranges, not a simple better-or-worse choice.

QWhat does DALI DT8 mean for Tunable White spots?

DALI DT8 can control brightness and color temperature together. For 24V Tunable White spots, the controller must translate the DT8 logic into suitable 24V PWM outputs for the warm-white and cool-white LED channels.

QIs Tunable White the same as Dim to Warm?

No. Tunable White lets the system actively choose a color temperature within a defined range. Dim to Warm usually changes the color temperature automatically while dimming. For planning and controller setup, the two concepts should be treated separately.

QWhat is the difference between Expert and Master Class?

Compare R9, Ra/CRI, spectrum, COB design, optical structure and heat dissipation. Expert can be enough for general rooms. For kitchens, dining areas, premium interiors, studios or display areas, review the Master data more carefully.

QWhich other components do I need?

A typical setup needs suitable spot housings or frames, a stable 24V DC power supply with reserve, a compatible two-channel 24V PWM controller or actuator, and a check of cable length, voltage drop, installation space and power reserve.

QIs Expert always better than Master for voltage drop?

Not always. Expert has a lower minimum input voltage limit of 21.5V, while Master is limited to 23V, so Expert can look more voltage-drop-friendly on paper. In projects with an adjustable 24V DC power supply, the output can often be set around 24.5V, making the practical voltage-drop tolerance similar in many installations. Although both series can reach up to 25V, we recommend keeping the spot-side voltage no higher than about 24.5V for long-term lifetime.