I see that often commercial radio devices go through EMC tests and attain FCC approval. Do all commercial radio devices need to be approved by the FCC though? According to this:
The radio frequency device is being imported in quantities of 4,000 or fewer units for testing and evaluation to determine compliance with the FCC Rules and Regulations, product development, or suitability for marketing. The devices will not be offered for sale or marketed.
It seems that if fewer than 4000 units are imported, FCC approval is not required if the imported units are not resold. So if an Amazon seller ships <4000 non-FCC approved radio devices directly from China to a US customer, so long the customer won't resell the device, it'd still be legal. Am I reading it right?
Any thought appreciated.