Light Sensors

Light sensors help automate lighting for comfort, safety, and energy savings. From photocells that trigger dusk‑to‑dawn lighting to occupancy and vacancy sensors that switch fixtures based on movement, these devices reduce wasted electricity and extend lamp life. Popular types include PIR motion sensors for hallways and offices, ultrasonic or dual‑technology sensors for spaces with complex movement, and daylight sensors that dim or switch lights based on available natural light. Choose stand‑alone controllers, in‑wall switch replacements, ceiling‑mounted sensors, or fixture‑integrated modules to fit new builds and retrofits alike. Many models support LED, CFL, and incandescent loads, offer 0–10V dimming, and integrate with smart platforms via Wi‑Fi, Zigbee, or Z‑Wave, making automated lighting easy to manage by schedule, app, or voice.

For outdoor security and pathways, look for photocells and PIR units with wide detection angles, adjustable lux thresholds, and weatherproof ratings (IP65 or better). In bathrooms, garages, and classrooms, occupancy sensors with adjustable timeout prevent lights being left on; in bedrooms or shared spaces, vacancy sensors that require manual on and automatic off cut nuisance activations. Commercial sites benefit from daylight harvesting sensors compliant with IECC, ASHRAE 90.1, and Title 24, paired with 0–10V dimming drivers. Verify voltage (120/277V line or low‑voltage), wiring compatibility, load ratings, and coverage area before purchase. Proper placement matters: mount at recommended height, aim away from HVAC vents and windows that cause false trips, and fine‑tune sensitivity and timeout during commissioning. For maintenance, keep lenses clean and test seasonally. With the right light sensor, you gain faster payback on energy costs, better occupant comfort, and hands‑off lighting control that adapts to your space throughout the day and night. Advanced options include dual-tech sensing, tamper-resistant housings, high-bay models for warehouses, pet-immunity, and Bluetooth commissioning for quick setup in offices, schools, retail, parking lots, and industrial facilities worldwide.