https://europa.eu/youreurope/business/product-rules-complian...
Most products don't require testing by a notified body. That means anyone can do the testing - or even you could do it at home. The CE mark is self-assessed - you don't have to get a lab to issue it to you.
But electronics does have to conform with various electromagnetic compatibility rules. There's effectively no way to prove that without doing EMC testing. Most non-EU manufacturers will still do EMC testing in a lab, perhaps in China. That test report becomes part of the product's technical file.
My point is that if you take a module from a 3rd party and integrate it into a larger electronic product, it no longer has the same behaviour from an EMC point of view. You have no evidence that it meets the harmonised standards for electromagnetic compatibility. Realistically, probably nobody will ever notice. But if they do, you don't have evidence that your product complies with the standard.
Don't nearly all electronics fall under it too, this is the second item after children toys in the link you posted.
> Here is a non-exhaustive list of products that are included in EU laws about CE marking:
> Toys, drones, electrical and electronic equipment, pyrotechnic products, recreational crafts and watercraft
> Don't nearly all electronics fall under it too, this is the second item after children toys in the link you posted.
No. That page just says: There are tons of EU laws about everything, including electronics. By putting a CE mark in your product, you certify that your product complies with all applicable EU laws.
In most cases, this certification can be a self-assessment, meaning that you can just assign the CE mark by whatever internal process you deem sufficient. I.e. you are allowed to rubber-stamp, but of course you are fully responsible for all consequences.
In some cases, for example childrens' toys, but only for some electronic components (electronic toys, medical stuff, high-voltage components, components that emit EM radiation above a certain threshold, ...), self-assessment isn't enough. In those cases, you need to obtain a certification from a notified body, which is an external organisation doing some design review and testing, as required by the respective laws.
It's all laid out further below under "How to obtain CE marking" and "Do you need an independent assessment?"