Edge visibility
Check tread and riser boundaries instead of overall room brightness.
Plan stair lighting by approach, step-edge contrast, shadows, sensor coverage, mounting, power, and maintenance access.
Use these factors before comparing finishes, effects, or retailer listings.
Check tread and riser boundaries instead of overall room brightness.
A sensor or shield that works upward may fail downward.
Spacing and angle should avoid hiding alternating edges.
Permanent wiring and code questions belong with a qualified electrician.