Data Sheet

12. Certifications
This section details certification status of the module in various regions.
The address for the module manufacturer and certification applicant is:
SILICON LABORATORIES FINLAND OY
Alberga Business Park, Bertel Jungin aukio 3,
02600 Espoo, Finland
12.1 Qualified External Antenna Types
This device has been certified with an embedded antenna with an external loop as well as external dipole whip antennas connected to
either RF port or both. The required antenna impedance is 50 Ω.
Table 12.1. Qualified Antennas for WFM200S
Antenna Type Maximum Gain
Connectorized Coaxial Dipole 4.7 dBi
Any antenna of the same general type and of equal or less directional gain as listed in the above table can be used in the regulatory
areas that have a full modular radio approval (USA, Canada, Korea, Japan) as long as spot-check testing is performed to verify that no
performance changes compromising compliance have been introduced. In countries applying the ETSI standards, like the EU countries,
the radiated emissions are always tested with the end-product and the antenna type is not critical, but antennas with higher gain may
violate some of the regulatory limits.
If an antenna of a different type (such as a patch antenna) with a gain less than or equal to 4.7 dBi is needed, it can be added as a
permissive change, requiring some radiated emission testing. Antenna types with more gain than 4.7 dBi may require a fully new certifi-
cation. Since the exact permissive change procedure is chosen on a case by case basis, please consult your test house, for example
while performing with them the EMC testing of the end-product.
The use of this certified module requires all applications to adhere to UG395: WFM200 Hardware Design User's Guide.
12.2 CE
The WFM200SA and WFM200SN modules are in conformity with the essential requirements and other relevant requirements of the
Radio Equipment Directive (RED) (2014/53/EU). Please note that every application using the WFM200SA and WFM200SN modules
will need to perform the radio EMC tests on the end product, according to EN 301 489-17. It is ultimately the responsibility of the manu-
facturer to ensure the compliance of the end-product. The specific product assembly may have an impact to RF radiated characteris-
tics, and manufacturers should carefully consider RF radiated testing with the end-product assembly. A formal Declaration of Conformi-
ty (DoC) is available on the product web page at www.silabs.com. “To ensure full conformity for CE, the end-product manufacturer is
supposed to set the CCA to Absolute Mode, and to make sure the max RF TX power levels are configured appropriately, primarily
based on the system antenna gain (the UG395: WFM200 Hardware Design User's Guide comes with a table showing configuration
examples of this.)”
WFM200S Data Sheet
Certifications
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