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Thanks for the advice! Indeed, I was planning to use pre-certified WiFi modules (ESP32 specifically). There are a couple of things here though: A) How can I tr

by dom96 5y ago

Thanks for the advice! Indeed, I was planning to use pre-certified WiFi modules (ESP32 specifically). There are a couple of things here though: A) How can I trust that my supplier actually did the right tests? Do I just trust that they follow whatever spec (that passes CE) Espressif gave them and that's enough? B) From what I've read, if all the components you use to build an electronic device are CE approved, that doesn't mean that your device is. This seems to be boiled down to as "CE + CE != CE" a lot of the time I've seen it. Is it wrong? Fiverr/Upwork is definitely not something I've considered. Will give these a try.

SOLAR_FIELDS 5y ago
For A, yes, you need to ensure the vendor is reputable and that their testing is trustworthy. Espressif, however, moves a lot of chips and I think it is safe to assume the manufacturer is reputable if they are supplying other well known ESP32 hardware - can maybe check importyeti to see who other people are using. For B, yes, you are correct, but my understanding is that as long as you don’t have any other “intentional” emitters (for example Wifi or BLE) you only need the unintentional if your device is battery powered or uses a certified power supply. Then it should be quite cheap and simpler to get the full certification (think $500-$1000 instead of an order of magnitude more)
asdefghyk 5y ago
RE ".....How can I trust that my supplier actually did the right tests? Do I just trust that they follow whatever spec (that passes CE) Espressif gave them and that's enough?..." This is a very important point. It is not unknown for products to have completely fake certifications including a fake lab report and fake certificates. What you need to do is ask for certification report and certification certificate. These documents will show the testing lab. It should be accredited to do the test. You need to contact the claimed testing lab and quote the approval number and check all the approval details match . ie the company, product is correct. Could also get a test lab of your choice to review the accreditation documents and product to verify them ( not retesting) just review to check accreditation.

by dom96 5y ago

SOLAR_FIELDS 5y ago

For A, yes, you need to ensure the vendor is reputable and that their testing is trustworthy. Espressif, however, moves a lot of chips and I think it is safe to assume the manufacturer is reputable if they are supplying other well known ESP32 hardware - can maybe check importyeti to see who other people are using. For B, yes, you are correct, but my understanding is that as long as you don’t have any other “intentional” emitters (for example Wifi or BLE) you only need the unintentional if your device is battery powered or uses a certified power supply. Then it should be quite cheap and simpler to get the full certification (think $500-$1000 instead of an order of magnitude more)

asdefghyk 5y ago

RE ".....How can I trust that my supplier actually did the right tests? Do I just trust that they follow whatever spec (that passes CE) Espressif gave them and that's enough?..." This is a very important point. It is not unknown for products to have completely fake certifications including a fake lab report and fake certificates. What you need to do is ask for certification report and certification certificate. These documents will show the testing lab. It should be accredited to do the test. You need to contact the claimed testing lab and quote the approval number and check all the approval details match . ie the company, product is correct. Could also get a test lab of your choice to review the accreditation documents and product to verify them ( not retesting) just review to check accreditation.