Circadian by default
Lumen tracks the sun for your exact latitude and shifts every fixture from crisp 5 600 K mornings to a 1 900 K candle glow, in steps too small to notice and too consistent to ignore.
Lumen is an ambient light operating system. It reads daylight, weather, your calendar and your heartbeat, then paints every lamp in the house with a colour temperature that matches the moment — without a single app tap.
Everything else is an implementation detail. These are the promises we design against.
Lumen tracks the sun for your exact latitude and shifts every fixture from crisp 5 600 K mornings to a 1 900 K candle glow, in steps too small to notice and too consistent to ignore.
Scenes are not presets, they are gradients in time. Cross-fade from "Focus" to "Dinner" over twenty minutes, or snap instantly when the doorbell rings. Every transition is eased, never stepped.
The whole OS runs on a hub the size of a coaster. No cloud round-trips, no account required, and the scene engine keeps working when the internet does not.