12 lines
355 B
Markdown
12 lines
355 B
Markdown
---
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tags:
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- resource
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---
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## Summary
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UL certification is only required for items that plug into mains power. FCC certification is needed for anything that oscillates at >9KHz.
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## References
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- [Understanding Certifications for Electronic Hardware Products](https://predictabledesigns.com/understanding-certifications-for-electronic-hardware-products)
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