Occupancy sensors for commercial electricity saving (40–60% lighting cut)
Automation & IoT · 6 min read · Updated 2026-03-12
TL;DR
PIR / microwave occupancy sensors auto-switch lights and fans in low-occupancy zones. Typical corridor lighting drops 40–60%; bathrooms and meeting rooms 50–70%. ROI of 4–10 months.
Best places to retrofit occupancy sensors
- —Office corridors and conference rooms.
- —Hotel bathrooms and wardrobe lights.
- —PG / hostel common corridors.
- —Mall service corridors, back-of-house.
- —Warehouse aisles with intermittent footfall.
Frequently asked questions
Do occupancy sensors work with old tube-lights?
Yes, though they're most efficient when paired with LEDs. Older magnetic ballasts wear faster with frequent switching — upgrade to electronic ballasts or LEDs.
