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IES TM-21-11
- Projecting Long Term Lumen Maintenance of LED Light Sources
- standard by Illuminating Engineering Society, 07/25/2011
- Publisher: IES
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This document provides recommendations for projecting long term lumen maintenance of LED light sources using data obtained when testing them per IES LM-80-08, "IES Approved Method for Measuring Lumen Maintenance of LED Light Sources."
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