The SODAQ ONE and the SODAQ ExpLoRer have CE mark. We have performed EMC tests on them.
They are in conformity with
RED Directive 2014/53/EU
RoHS2 Directive 2011/65/EU (RoHS 2)
WEEE directive 2012/19/EU
So these development boards have CE mark, but if you integrate it in your product you are responsible for CE for your product.
I have sent in a private message the DoC of the SODAQ Explorer and SODAQ ONE