Standard for USA/Canada: 120V/60Hz, 277V/60Hz
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Term used for light emission which, due to its illuminance, its direction or its spectrum, causes interference in any particular situation. In outdoor areas, light pollution refers to light which is emitted into the night sky reducing the darkness. The consequences include wasted energy and a detrimental effect on flora and fauna. The avoidance of light pollution is also known as Dark Sky in terms of lighting design.