Credit: Federal Trade Commission

Since January 1, 2012, the FTC has required manufacturers to display a "Lighting Facts Label" on the packaging for medium screw-base LEDs. It contains information about brightness, cost, life expectancy, energy used, and color temperature, and is intended to help consumers compare lighting products.

A similar label developed by the DOE applies to all solid-state lighting, not just screw-base LEDs (see example below). Unlike the FTC label, which is mandatory but does not require data verification testing, participation in the DOE labeling program is voluntary, but manufacturers must provide test results to verify performance claims. The DOE...

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