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WattStopper daylighting control launch celebration scheduled at California Lighting Technology Center at UC Davis

LMLS-600 Dual Loop Dimming and Switching Photosensor

SANTA CLARA, Calif. April 15, 2013 – The University of California at Davis’ (UC Davis) California Lighting Technology Center (CLTC) is hosting a launch event for WattStopper’s LMLS-600 Switching and Dimming Dual Loop Photosensor, the first commercial product to combine open and closed loop daylighting control strategies. The breakthrough technology is the result of a joint research project including WattStopper, CLTC, Wal-Mart and three California utilities, and the LMLS-600 is the newest component of WattStopper’s energy efficient Digital Lighting Management (DLM) technology platform. Widely regarded as a pivotal innovation in daylight harvesting and efficient building design, the core technology is patented by UC Davis.

The launch celebration, scheduled for Wednesday April 17, 2013, includes a seminar, technology demonstration, luncheon, and tours of CLTC's new daylighting and LED laboratories. Scheduled speakers include CLTC Co- Director Konstantinos Papamichael, CLTC Outreach Specialist Tom Herbert, Wal-Mart Sr. Electrical Engineering Manager Douglas D. May, and WattStopper Regional Vice President Charles Knuffke. The lecture portions of the event will be available via webinar for those unable to attend in person. For more information see the launch invitation at:

The new LMLS-600 includes two photosensors – an open loop sensor to detect daylight contribution, and a closed loop sensor to read the ambient light level – and sophisticated algorithms to simplify setup and ensure optimal performance. It provides superior automatic daylighting control for buildings with skylights, preventing distracting lighting level changes and delivering 50% greater energy savings than previous control solutions. The dual loop sensor will help cut costs and fulfill new energy code requirements in commercial applications including retail stores, warehouses, schools and office buildings. 

The LMLS-600 features automatic commissioning, including self-calibration and establishment of setpoints, saving time for installers and improving performance. Additionally, it recalibrates itself every night to adapt to reflectance changes in the space, such as a new furniture layout, a new retail display or lamp lumen depreciation. For more information on the LMLS-600, see