RF exposure

FCC ID: XRAFB404

RF Exposure Info

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FCCID_2412231

FCC ID: XRAFB404 Device is a wireless activity tracker. During normal operation, user extremities can come within 20cm of the internal antenna and therefore product is considered as “Portable”. Per FCC KDB447498 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at Test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ・ [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where  f(GHz) is the RF channel transmit frequency in GHz  Power and distance are rounded to the nearest mW and mm before calculation  The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion Calculation based on the above formula: Separation Distance = 5 mm Conducted Output Power = 1.38 mW Frequency = 2.480 GHz Calculation = 0.43< 3 Since calculated value is less than 3, product complies with FCC’s RF radiation exposure limits for general population as a portable device without the need for SAR evaluation.


Document Created: 2014-09-22 12:47:26
Document Modified: 2014-09-22 12:47:26
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