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L70 and LM-80 Explained: What “50,000 Hour Lifespan” Really Means for Red Light Panels
A “50,000 hour” red light panel does not run at full output for 50,000 hours. A manufacturer-side explanation of L70, LM-80, and TM-21, why the rating usually describes the LED chip and not your panel, and why output decline matters more in therapy than in lighting.