Go through CE-RED (Radio Equipment Directive 2014/53/EU), one set covers three items: radio frequency performance (EN 300 328, etc.), electromagnetic compatibility (EN 301 489 series), electrical safety (EN 62368-1), and human exposure assessment is also required (SAR or EN 50663 exemption determination). In addition, RoHS, REACH, WEEE/battery registration, and packaging PPWR must also be met. In practice, about 70% of radio frequency products require an EU-type examination certificate issued by a notified body (NB).
Two high-frequency blockers: first, if the "fixed-frequency method" cannot be provided, the laboratory cannot make the product transmit continuously; second, the gain of the external antenna has not been corrected for EIRP, resulting in excessive power.