LEDs that glow when off, flicker at timeout, or shut off “randomly” usually aren’t a bad switch. This field guide shows how to name the symptom, run one-change tests, and match the fix to drivers, heat, load, or false triggers.

Conference rooms can pass a walk test and still go dark mid-call when people sit still. Learn a practical control contract—often vacancy mode—plus validation steps for seated presence, sensor placement, and timeouts that keep video meetings reliable without making rooms always-on.

Fitting rooms fail in two ways: lights that shut off mid-change or never shut off at all. Learn a practical trigger-hold-release approach, plus a 10-minute per-room checklist and humane settings that prevent both outcomes.

Louvered bifold doors can make a PIR sensor “see” hallway motion and airflow, causing false-ons and mid-task shut-offs. Learn a durable fix order: re-aim or relocate, mask the hallway sector, use vacancy mode, then fine-tune settings with real walk-tests.

Garage PIR switches often aren’t broken—they’re reacting to sun stripes, hot car cool-down, and door-plane temperature swings. Fix false triggers by changing the sensor’s view first, then fine-tuning settings and adding daylight gating.

Split-level stair landings often cause motion lights to snap off and on because of short timeouts and poor line-of-sight during the pivot. Learn how to fix landing strobe by adjusting hold time, aiming for cross-traffic, and designing multi-location controls correctly.