User's Manual

Silicon Laboratories Finland Oy
Page 40 of 45
 The transmitter module must not be co-located or operating in conjunction with any other antenna or
transmitter except in accordance with FCC multi-transmitter product procedures.
As long as the two conditions above are met, further transmitter testing will not be required. However, the
OEM integrator is still responsible for testing their end-product for any additional compliance requirements
required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.).
IMPORTANT NOTE: In the event that these conditions cannot be met (for certain configurations or co-location
with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID cannot be
used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the
end product (including the transmitter) and obtaining a separate FCC authorization.
End Product Labeling
The WT41U module is labeled with its own FCC ID. If the FCC ID is not visible when the module is installed
inside another device, then the outside of the device into which the module is installed must also display a
label referring to the enclosed module. In that case, the final end product must be labeled in a visible area
with the following:
“Contains Transmitter Module FCC ID: QOQWT41U”
or
“Contains FCC ID: QOQWT41U
The OEM integrator has to be aware not to provide information to the end user regarding how to install or
remove this RF module or change RF related parameters in the user manual of the end product
12.3 ISEDC
This radio transmitter (IC: 5123A-WT41U) has been approved by Industry Canada to operate with the
embedded chip antenna and the antennas listed in the table 18. Other antenna types are strictly prohibited for
use with this device.
This device complies with Industry Canada’s license-exempt RSS standards. Operation is subject to the
following two conditions:
(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that may cause undesired operation of the
device
RF Exposure Statement
Exception from routine SAR evaluation limits are given in RSS-102 Issue5. WT41U meets the given
requirements when the minimum separation distance to human body is less than equal to 40 mm. RF
exposure or SAR evaluation is not required when the separation distance is 40 mm or more. If the separation
distance is less than 40 mm the OEM integrator is responsible for evaluating the SAR.
OEM Responsibilities to comply with IC Regulations
The WT41U Module has been certified for integration into products only by OEM integrators under the
following conditions:
 The antenna(s) must be installed such that a minimum separation distance of 40 mm is maintained
between the radiator (antenna) and all persons at all times.