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How do I choose between different LED product types?

Match the product type to your application: downlights for recessed ceiling lighting, panel lights for suspended grid ceilings, track lights for retail display, high bays for warehouses (6m+ ceiling), flood lights for outdoor facades, and strips for cove/accent lighting.

What certifications do I actually need?

Minimum mandatory: CE (EU) or UL/ETL (North America) for safety, RoHS for material compliance. For energy rebates: DLC (North America) or ERP (EU). For premium projects: ENEC (EU), Energy Star (US).

How much should I budget for LED lighting procurement?

Budget-grade panels ($8-20/unit) work for price-sensitive projects. Mid-range ($20-50) offers better CRI, longer warranties, and dimming support — the sweet spot for most commercial projects. Premium ($50+) provides CRI 95+, DALI control, 10-year warranties.

What's the difference between efficacy and efficiency?

Efficacy (lm/W) measures how much light you get per watt of electricity — higher is better. 100 lm/W is today's baseline, 130+ is premium. Always check efficacy at operating temperature via LM-80 reports for real-world data.