95% relative humidity, non-condensing, for indoor use only environmental conditionsDual technology occupancy sensor combines the benefits of passive infrared (PIR) and ultrasonic technologiesThe sensor mounts on the ceiling with a flat, low profile appearance and provides 360 deg of coverageDetection signature analysis eliminates false triggers and provides immunity to RFI and EMIWalk through mode turns lights off 3 min after the area is initially occupied - ideal for brief visits such as mail deliveryBuilt-in light level sensor featuring simple, one step setupZero crossing for long relay life1 x 108 operating cycleUltrasonic diffusion technology spreads coverage to a wider area (patent pending)Dip switch simplifies sensor adjustmentsLEDs indicate occupancy detectionUses existing line voltage wiring and doesn't require a power packSix occupancy logic options give users the ability to customize control to meet application needsBallast load type