Using pre-certified FCC module does not dispense you from the require certification. You can only reuse the intention emission test results. You are required to FCC/CE certify the product as a whole no matter the component inside is certified or not. The certification of the module is valid for you only if you use it as it without any addition circuitry. So pre-certify module is more or less for marketing purpose.
From my understanding of the process. Using a pre-certified module reduces your risk, because the module on its own is compliant.
Therefore when you send your whole product for testing, there should not be any issues with the 2.4Ghz band emissions, or direct emissions from the nRF52 processor.
I noticed however with the product that was linked to, is that it can have an external antenna
"Chip antenna or IPEX MHF4 Connector"
If you connect an external antenna, you would invalidate most of the RF compliance
So its not a magic bullet.
I have developed hardware using WiFi and other BLE modules, and they have passed testing and been certified without any issues.
But a lot still depends on who whole system (schematic & PCB design), I recall one company who put a ground plane directly under the antenna of a module, which causes all sorts range and certification problems ;-)
From my understanding of the process. Using a pre-certified module reduces your risk, because the module on its own is compliant.
Therefore when you send your whole product for testing, there should not be any issues with the 2.4Ghz band emissions, or direct emissions from the nRF52 processor.
I noticed however with the product that was linked to, is that it can have an external antenna
"Chip antenna or IPEX MHF4 Connector"
If you connect an external antenna, you would invalidate most of the RF compliance
So its not a magic bullet.
I have developed hardware using WiFi and other BLE modules, and they have passed testing and been certified without any issues.
But a lot still depends on who whole system (schematic & PCB design), I recall one company who put a ground plane directly under the antenna of a module, which causes all sorts range and certification problems ;-)
