The Schneider Electric Commercial Grade Dual Technology/Dual Circuit wall switch occupancy sensor is designed to provide maximum energy savings, while achieving a sleek, uniform appearance. The sensor provides control of two separate loads by detecting motion and ambient light using Passive Infrared (PIR) and Ultrasonic technologies.

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http://www.schneider-electric.us/products-services/products/lighting-control/sensors/wall-switch-occupancy-sensors/dual-technology-wall-switch-occupancy-sensor-commercial-grade/