Phaos Specification System
Select Architectural Luminaire Family:
Live Architectural Order Code:ST12-9827K-12D-1200L-BK-DALI-HL
5. Delivered Flux:1200 lm (12 W)
650 lm1450 lm
CBCP: 18,400 cd•Calculated UGR: < 5.4
Architectural Specification Document // CSI MasterFormat™ 26 51 00
STYLOS O-12 Architectural Luminaire Specification
01 — Product Specification (MasterFormat 3-Part Text)
The luminaire shall be Phaos STYLOS O-12 (ST12-9827K-12D-1200L-BK-DALI-HL) or approved architectural equivalent. The unit shall feature a 38mm optical aperture delivering 1200 delivered lumens at 12W system power (100 lm/W). Optical system shall consist of High-purity fused quartz collimating Total Internal Reflection (TIR) lens with secondary anti-reflective nanocoating providing a 12° distribution with visual cutoff exceeding 55° and UGR < 5.4. Spectral quality shall maintain CRI 98+, R9 > 96, and TM-30 Rf 97 / Rg 101 within a 1.5-step MacAdam ellipse at 2700K. Driver shall be Remote class-2 constant-current driver with active PFC operating under DALI-2 with dimming smoothly down to 0.1%. Housing shall be CNC-machined CNC-machined aerospace 6063-T6 aluminum with black anodized thermal chamber finished in Matte Carbon Black.
02 — Technical Summary
Order CodeST12-9827K-12D-1200L-BK-DALI-HL
Luminaire SeriesST12
Product FamilyDownlights
Product TypeRecessed Downlight
Mounting DetailTrimless Plaster-in
Tactile FinishMatte Carbon Black
Ingress ProtectionIP44 / IK06
Factory Warranty10 Years
03 — Mechanical Dimensions & Clearances
Optical Aperture:Ø 38 mm
Recession Depth:92 mm
Ceiling Cutout Detail:Ø 42 mm
Minimum Plenum Clearance:110 mm vertical clearance
Weight:0.42 kg
04 — Photometric Performance
Delivered Luminous Flux:1,200 lm (Delivered)
Peak Intensity (CBCP):18,400 cd (CBCP)
Beam Angle & Cutoff:12° FWHM (Cutoff 55° Physical Shielding)
Glare Evaluation:UGR < 5.4 (UGR < 6 (Cutoff 55°))
Color Metrics:CRI 98, R9 96, TM-30 Rf 97 / Rg 101, SDCM < 1.5
05 — Electrical & Efficiency
System Power:12 W
System Efficacy:100 lm/W
Power Factor & THD:> 0.95 at full load, < 8% Total Harmonic Distortion
Flicker Metric:< 0.01 (IEEE 1789 No Observable Effect Level)
06 — Control Protocol & Dimming
Control Protocol:DALI-2
Dimming Range:0.1% to 100% continuous architectural dimming
Addressing & Curve:Logarithmic or Linear (programmable via software)
Emergency Circuit:Remote 3-Hour Emergency Inverter Pack Available
07 — Optical Accessories Specified
Micro-Cellular Honeycomb Louver (HL)Absorbs 98% of lateral stray flux and limits off-axis view into the LED core
-8% transmission08 — Installation & Maintenance
Ceiling Substrate:10 mm to 32 mm plasterboard / timber reveal
Electrical Hookup:Quick-connect push-in terminal block with tool-less loop-in/loop-out
Thermal Clearance:50 mm free airspace around heat sink perimeter
Serviceability:Front aperture twist-lock release for driver serviceability without ceiling cut damage
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