I've designed a product that utilizes a Raytac MDBT50Q-P1MV2 'pre-certified' MCU+Bluetooth module (based on Nordic nRF52840) and am now considering what it would take for me to legally sell such a product in the US.
It seems the two obvious hurdles are FCC and Bluetooth and I believe (hope) that utilizing the Raytac modules instead of the nRF52840 series directly have given me a leg up there. I've also intentionally chosen the integrated antenna module to avoid undoing any of those certifications. Here's what I believe the 'pre-certified' module buys me (see pages 49 onward):
- BT 5.1 / BT 5.2 Declaration ID's (is this even needed for BLE?)
- FCC Certification for BLE (IEEE 802.15.4)
I've read some conflicting information, but I believe the truth is even with an integrated antenna on a pre-certified module I still need my own FCC Part 15B EMC testing. That seems to agree with this Raytac blog-post (generalized for all their modules) I found. I will be reaching out to some testing laboratories and hope they will give me guidance here.
Where things are really murky is the Bluetooth 'Certification'. The Raytac modules themselves already have DID and QDID's, but Raytac's blog makes it sound like I need my own DID. And notably the DID topics are relevant to BT 5.2 and BT 5.1, but I am only using BLE functionality. Is it right that I would need to join Bluetooth's SIG membership (free?), purchase a DID (not free!), then activate my DID with Raytac's QDID (maybe free?). Is this process necessary for BLE? Does it involve testing? Any idea what purchasing your own DID costs?
Additional background on the product for context:
- BLE device adhering to both FTMS (Fitness Machine Service) and CSC (Cycling Speed Cadence) profiles
- An rs485 transceiver
- A 3.5" TFT display
- A 12v to 5v switching regulator for a 3A USB fast-charging interface (Type A)
- I'm tempted to drop this all together and use only a LDO regulator for 3.3v for the module if it complicates testing/certification