Greetings to all, 
 
I am new to the forum and have already found it to be a great source of 
information sharing. 
 
I have recently procurred EN 50371 and several of the other harmonized RF 
exposure guidelines for the purpose of evaluating primarily Bluetooth devices. 
 
The devices I am primarily interested in right now are devices with greater 
than 20 cm serperation from the user and less than 20 mW output power. I 
believe that EN 50371 is the correct standard in this case. 
 
>From my first read, it appears that BT devices with total output power < 20 mW 
>are exempt from testing:
 
(ref. section 4.1 - if avg power is < = 20 mW then apparatus deemed to comply 
with basic restrictions without testing)
(also - if total power < 20 mW assumed that emitted power < 20 mW). 
 
In that case you would just put the standard on the list of applied standards 
on the Notification Letter if following Annex III route of the R&TTE Directive 
and would also keep some sore of declaration / evidence in the TCF. 
 
Does anyone out there have any opinions to the contrary or perhaps can verify 
this? 
 
I have more questions about devices that are over 20 mW and am also wondering 
if portable / mobile considerations come into play, but will hold off on those 
for another day. 
 
Best regards, 
 
William M. Elliott (Mac)
Staff Engineer- Wireless Testing
Bluetooth Qualification Body
 
HYPER Corporation
1279 Quarry Lane, Suite B
Pleasanton, CA 94566-8499
 
+1 925.462.9105 (Office)
+1.925.280.7751 (Fax)
+1 925.577.5518 (Mobile)
mailto:[email protected]
www.hyperinterop.com



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