You only need to undergo FCC testing if the module you use is not already certified. You can buy "FCC-approved" modules that are "ready to sell".
I ran into something similar with BT4.0 modules - had to convince the client that a $3 module, while cheap up front, couldn't be sold without spending $$$ on certification. Eventually they went with a $7 one.
Comments
You only need to undergo FCC testing if the module you use is not already certified. You can buy "FCC-approved" modules that are "ready to sell".
I ran into something similar with BT4.0 modules - had to convince the client that a $3 module, while cheap up front, couldn't be sold without spending $$$ on certification. Eventually they went with a $7 one.