RF Exposure

FCC ID: 2AOSY-SENSE01

RF Exposure Info

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RF919D 2.0 Appendix G: General SAR test reduction and exclusion guidance KDB 447498 Section 4.3 General SAR test reduction and exclusion guidance For Standalone SAR exclusion consideration, when SAR Exclusion Threshold requirement in KDB 447498 is satisfied, standalone SAR evaluation for general population exposure conditions by measurement or numerical simulation is not required. In the frequency range below 100 MHz to 6 GHz and test separation distance of 50 mm, the SAR Test Exclusion Threshold for operation in the 2400 – 2483.5 MHz band will be determined as follows SAR Exclusion Threshold (SARET) SAR Exclusion Threshold = Step 1 + Step 2 Step 1 NT = [(MP/TSDA) * √ fGHz ] NT = Numeric Threshold (3.0 for 1-g SAR and 7.5 for 10-g SAR) MP = Max Power of channel (mW) (inc tune up) TSDA = Min Test separation Distance or 50mm (whichever is lower) = 5 mm We can transpose this formula to allow us to find the maximum power of a channel allowed and compare this to the measured maximum power. = [(NT x TSDA) / √ fGHz] For Distances Greater than 50 mm Step 2 applies Step 2 (TSDB – 50mm) * 10} Where: TSDB = Min Test separation Distance (mm) = 50 Uncontrolled if Printed Page 1 of 2

RF919D 2.0 Operating Frequency 2.402 GHz SARET = [(3.0 x 5) / √2.402] SARET = [15 / 1.55] SARET = 9.68 mW Operating Frequency 2.440 GHz SARET = [(3.0 x 5) / √2.44 ] SARET = [15 / 1.56] SARET = 9.62 mW Operating Frequency 2.480 GHz SARET = [(3.0 x 5) / √0.92760 SARET = [15 / 1.57 ] SARET = 9.55 mW Channel Conducted Antenna SAR EIRP SAR Frequency Power Gain Exclusion (mW) Evaluation (MHz) (dBm) (dBi) Threshold 2402 5.29 0 3.38 9.68 Not Required 2440 5.09 0 3.23 9.62 Not Required 2480 4.83 0 3.04 9.55 Not Required Therefore standalone SAR evaluation for general population exposure conditions by measurement or numerical simulation is not required. Uncontrolled if Printed Page 2 of 2


Document Created: 2018-06-14 14:13:23
Document Modified: 2018-06-14 14:13:23
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