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Ketra (now part of Lutron) builds the only residential lighting fixtures we have found that genuinely match daylight. Each fixture contains five LED emitters and is individually calibrated at the factory — every D2 or D5 we ship is referenced to the same color point, so a twenty-foot run of cove light reads as one continuous tone, not a row of mismatched chips.
Conventional tunable-white fixtures use two LEDs — one warm, one cool — and dim them against each other to fake intermediate color temperatures. The result is a green or magenta cast at intermediate points, and visible color drift over the dimming range. Architects can see this from across a room, even if their clients cannot.
Ketra puts five emitters in every fixture and runs a calibrated control algorithm across all five — producing color that tracks the black-body curve faithfully from 1400K candlelight to 10,000K overcast sky. The hardware is engineered for ninety-plus CRI at every point in the dimming range. We specify Ketra wherever the architect has invested seriously in the materials of the room.
The flagship tunable-white architectural downlight — 1400K to 10,000K, 0.1% dimming, available with a range of beam optics and trim families.
Continuous architectural cove and slot fixtures — fully calibrated across runs of any length, designed to disappear into the ceiling detail.
A retrofit-compatible Ketra emitter in a screw-in form factor — used to bring tunable white into existing decorative fixtures the client wants to keep.
Surface-mount Ketra fixtures for kitchen islands, dining table accents, and gallery walls where a recessed approach is wrong.
D2 downlights and D5 cove runs holding a perfect 3000K through evening, then sliding gracefully to 1900K candlelight for the Night scene.
Circadian tuning across the day — 4500K morning energy, 3000K relaxed evening, 1800K bedtime — calibrated to support sleep without a single conscious adjustment.
D5 linear cove light grazing a stone wall or plaster ceiling — color held perfectly stable across a forty-foot run, with no visible LED hot spots.
Satellite under-cabinet fixtures rendering food, ingredients, and skin tones with daylight accuracy — calibrated to 92+ CRI, R9 over 80.
A full five-discipline integration inside a waterfront landmark — engineered in concert with the architect from schematic through commissioning.
Read the case studyA reference-grade screening room and whole-apartment integration inside a 1929 pre-war — delivered under the strictest alteration agreement we have worked under.
Read the case studyThe modern luxury home runs 200+ connected devices. Most are secured with nothing but the default password their vendor shipped. We take cybersecurity seriously in a way that residential integrators historically have not — and we do it as a permanent service, not a one-time install.
Read the networking briefEvery device authenticated at layer 2, every traffic flow firewalled and logged. Four VLANs, no shared broadcast domain, explicit allow-list.
An off-site security operations center watches your network every hour of every day. Anomaly detection, DNS reputation, real-person escalation in under 15 minutes.
Written compliance report — firmware status, traffic anomalies, capacity planning — reviewed with you every ninety days. Nothing drifts, nothing is assumed.
Architectural downlight engineering — the trim that lets the rest of the room do the talking.