Modern Illumination

(Page 5 of 5)

December/January 1992
By the Mother Earth News editors 
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If you're the type of person who forgets to turn off lights when you leave a room, consider installing occupancy sensors that automatically turn lights off when you leave a room. Most of these work by sensing heat or motion. While used primarily in commercial buildings, they can save energy in the home as well. Some models are available for as little as $40, while most are more expensive. Motion-sensing controls for outdoor security lighting both save energy and discourage potential intruders.

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Another control strategy with incandescent lights and some tube fluorescents is to reduce light level and energy use with dimmers. Only tube fluorescent lights (not compact) with dimming ballasts can be used in this way.

Light-sensing controls are increasingly being used to control outdoor lights. If you leave outdoor lights on all night, these controls are a great convenience, and they can save a great deal of energy by turning the lights off as soon as the sun comes up. The same device can be used indoors in houses with lots of natural light, dimming lights automatically upon sensing the right amount of daylight.

From Consumer Guide to Home Energy Savings , © 1991, published by the American Council for an Energy-Efficient Economy (ACEEE). For more information, write to: ACEEE, 2140 Shattuck Ave., #202, Berkeley, CA 94704.

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