The OPT3001 is an ambient-light sensor designed to approximate the human-eye response and reject infrared influence. In Terrestream, lux is a context channel: it helps the device adapt display behavior and helps the software understand room use, daylight cycles, and possible placement problems.
Lux can help explain IAQ patterns. Daylight and occupancy often move together in offices, classrooms, and meeting rooms. A sensor that sees no daylight in a room that should be occupied may be hidden, covered, or placed in a poor location. A nighttime light event can align with cleaning, cooking, or after-hours building activity.
Lux is not the same as circadian stimulus, melanopic equivalent daylight illuminance, glare analysis, or a lighting-compliance report. Those workflows require spectral, spatial, timing, and project-level information beyond a single ambient-light channel.
The right claim is modest and useful: lux gives Terrestream environmental context. It helps interpretation, but it does not certify lighting quality.
