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Triggers

Light

Light and daylight

5 Recipes Triggers · light
Dark-room occupancy boost for a windowless utility room A windowless utility room has no daylight reference at all, so presence alone drives a two-stage scene: 40 % on entry, 85 % when you stay past 20 seconds, off 90 seconds after you leave. Entry-to-light latency is 400 ms on Thread. thread 400 ms Overcast compensation for a north-facing kitchen A kitchen with no direct sun still swings from 120 lx to 900 lx as cloud cover changes. This recipe tops up the under-cabinet strip to keep the counter at 350 lx while the ceiling stays off all day. zigbee 5000 ms Daylight harvesting: electric light follows the window The ceiling circuit in a south-facing office trims itself down as daylight rises, holding a constant 500 lx on the work plane. Measured saving on a clear spring day was 41 % of the lighting energy against a fixed-100 % baseline. matter 8000 ms Twilight path lighting keyed to sun elevation, not a clock Garden path lights come on when the sun hits -4° elevation and dim to 30 % at -12°, so the transition takes 25–40 minutes depending on the season and never looks like a switch was thrown. zwave 30000 ms Lux-adaptive blinds that hold 300 lx on the desk, not a fixed percentage A closed-loop controller reads a desk lux sensor every 90 seconds and moves the blind to the position that keeps the desk between 250 and 400 lx. On an overcast day it opens fully; on a bright February noon it sits at 22 % open. matter 90000 ms