Adjustable Flangeless Downlight — 6 Sizes, One HCL Product
6 sizes in one product page · 5W, 7W · SUMLINK HCL configuration (tunable white 2700K–6500K)
Circadian performance, stated as measurable numbers
Tunable white is a colour feature. Human Centric Lighting is a measurement obligation. Below are the quantities a lighting designer needs to model BY001 against WELL v2, CIE S 026 and IEC TR 63158 — including the ones still awaiting third-party verification.
Melanopic response across the tuning range
Move the control to see melanopic output across the tuning range.
M/P Ratio
0.40–0.90 across 2700K–5000K (design target)
Melanopic DER, CIE S 026:2018, across the tuning range
Design target
Percent Flicker
< 1% (low-ripple driver, IEEE 1789 NOEL)
Across the dimming range; IEEE 1789-2015 no-risk region
Design target
SVM
≤ 0.40
Stroboscopic visibility measure (SVM); EU Ecodesign Regulation 2019/2020 limit 0.4 at full load; test method IEC TR 63158
Design target
Colour Shift
< 0.003 over full dimming range
At 6 000 h, Ta 25 °C
Design target
SDCM
≤ 2 SDCM
MacAdam ellipse, initial, ANSI C78.377
Design target
TM-30-20
Rf ≥ 95 / Rg ≥ 100
Fidelity and gamut index, ANSI/IES TM-30-20
Design target
CRI Ra
CRI ≥95 (Bridgelux Vesta Thrive TW)
Measured at 4000 K reference point
Design target
Glare · UGR
< 19
4H8H, transverse viewing
Design target
02 — Selection
Model selection
Per-SKU dimensions and profiles are released with the BOM. Below is what is confirmed today.
Finish ● Black ○ White · All models 2700–6500 K
| Model (SKU) | Power | Housing size (mm) | Cutout (mm) | Beam angle | CCT (HCL engine) | CRI | IP |
|---|---|---|---|---|---|---|---|
| LN-CRXJ-A-4007-7W | 7W | 40 | — | 3°, 5°, 8°, 10°, 15°, 24°, 36° | 2700K – 6500K Tunable White | ≥95 | IP20 |
| LN-CRXJ-A-3505-7W | 7W | 35 | — | 3°, 5°, 8°, 10°, 15°, 24°, 36° | 2700K – 6500K Tunable White | ≥95 | IP20 |
| LN-CRXJ-A-3005-7W | 7W | 30 | — | 3°, 5°, 8°, 10°, 15°, 24°, 36° | 2700K – 6500K Tunable White | ≥95 | IP20 |
| LN-CRXJ-A-4007-5W | 5W | 40 | — | 3°, 5°, 8°, 10°, 15°, 24°, 36° | 2700K – 6500K Tunable White | ≥95 | IP20 |
| LN-CRXJ-A-3505-5W | 5W | 35 | — | 3°, 5°, 8°, 10°, 15°, 24°, 36° | 2700K – 6500K Tunable White | ≥95 | IP20 |
| LN-CRXJ-A-3005-5W | 5W | 30 | — | 3°, 5°, 8°, 10°, 15°, 24°, 36° | 2700K – 6500K Tunable White | ≥95 | IP20 |
POWER
5W, 7W
FLUX
Per size — see size table (HCL engine, design target 131 lm/W)
CCT
2700K – 6500K Tunable White via Matter over Thread (LTECH W2MA, HCL engine)
ENVELOPE
6 sizes — see size table
FINISH
Per source factory housing options (see size table)
Individual model dimensions, mounting type and per-SKU datasheets are issued on request while the model schedule is finalised.
Request the model schedule03 — Verification
Full specification
Single source of truth. Nothing here is repeated elsewhere on the page.
05 — Resources
Downloads
Specifying this fixture on a live project?
Send the room schedule — we return a BOM, driver and control topology, and the spec sheets for each SKU.