Occupancy Sensors automatically turn lights ON when motion is detected and automatically turn lights OFF when the space is vacant and motion is not detected for 15 minutes (timer selections generally vary from 15 min., 30 min. or 45 mins).
Vacancy Sensors require that lights be manually turned ON but the lights will automatically turn OFF when the room is vacant and motion is not detected for 15 or more minutes. 
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David P Hakimi
David Hakimi is a lighting consultant and co-founder of Alcon Lighting. The UCLA graduate works to achieve energy-efficient lighting, enabling architects, designers and lighting engineers to upgrade from outmoded lighting. David takes particular pride in Alcon’s design, energy and building knowledge, tracing his and Alcon’s commitment to quality, innovation, accountability and value to lessons learned from his father, a Southern California lighting salesman and consultant for more than two decades. Passionate about protecting the environment, David is especially adept in assuring that each client and customer meets both rapidly-changing building codes and project goals.
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The term Architectural Lighting encompasses three main factors. The first is the building’s aesthetic, which is crucial for any commercial, especially retail, environment. The second consideration is ergonomic or functional — any aspect which improves one’s ability to live, work, function, relax or play — to make the space easier to use. The third aspect involves the efficiency of energy, ensuring that light is properly, which is to say economically or optimally, used and distributed.
If the work of lighting design was just left to services engineers to meet regulation-determined illuminance criteria per application, then interior and exterior architectural spaces would become soulless environments. Using qualitative measurements, architects and lighting designers can make sure the architectural intention and aesthetic character of a space is not compromised.
The science of measuring light, photometry, specifically applies to light in a space. Photometrics gauges how humans perceive light — its coverage area, where light cuts off and the intensity of light in relation to distance from the light source. In practical terms, photometrics shows whether a lighting plan meets the qualitative and quantitative lighting requirements for a project.
Products can demand attention with the help of proper lighting. This means an open floor plan with tactical attention to lighting fixture placement, brightness, color temperature, and CRI. The ability of LED Lighting to meet these technical requirements is what makes it the #1 choice of lighting designers and architects.
At Alcon Lighting’s LA headquarters, co-founder David Hakimi adopted a 12 year-old dog named Nano and decided to bring him into the office every day. Let’s just say it garnered some attention. It quickly became clear that Nano, who’s now 14 years old, relishes a long nap. Nano likes to hop and curl up in an easy chair, resting his head on the arm, drifting into slumber. In fact, David says this is Nano’s favorite activity.
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