TUV116_FCC_MPE Rev B

FCC ID: SBVRM023

RF Exposure Info

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FCCID_4366467

MPE/RF EXPOSURE EVALUATION REPORT FCC CFR 47 Part 1.1310 TUVR116_FCC_MPE Rev B Company: Sonos Inc. Model Name: S23

MPE/RF EXPOSURE EVALUATION REPORT Company: Sonos Inc. Model Name: S23 To: FCC CFR 47 Part 1.1310 Test Report Serial No.: TUVR116_FCC_MPE Rev B This report supersedes: NONE Applicant: Sonos Inc 614 Chapala St. Santa Barbara, California 93101 USA Issue Date: 24th June 2019 This Test Report is Issued Under the Authority of: MiCOM Labs, Inc. 575 Boulder Court Pleasanton California 94566 USA Phone: +1 (925) 462-0304 Fax: +1 (925) 462-0306 www.micomlabs.com MiCOM Labs is an ISO 17025 Accredited Testing Laboratory

Title: Sonos Inc S23 To: FCC CFR 47 Part 1.1310 Serial #: TUVR116_FCC_MPE Rev B 1.1. MAXIMUM PERMISSABLE EXPOSURE Calculations for Maximum Permissible Exposure Levels Power Density = Pd (mW/cm 2) = EIRP/(4*π*d2) EIRP = P * G P = Peak output power (mW) G = Antenna numeric gain (numeric) d = Separation distance (cm) Numeric Gain = 10 ^ (G (dBi)/10) The calculations in the table below use the highest conducted power value together with the highest antenna gain specified for the EUT. These calculations represent worst case in terms of the exposure levels. Calculated Peak Peak Power Ant Numeric Power Output Output Density Min Calculated safe Freq. Band (MHz) Gain Gain Density Power Power Limit distance for Limit (cm) (dBi) (numeric) (mW/cm2) (dBm) (mW) (mW/cm2) @ 20cm 2400.0 - 2483.5 (BLE) 3.3 2.14 -6.62 0.22 0.000093 1.00 0.192 2400.0 - 2483.5 3.6 2.29 23.87 243.78 0.111 1.00 6.666 (WiFi 5.5 Mbit/s) 5725.0 - 5850.0 2.9 1.95 23.99 250.61 0.097 1.00 6.236 The following assessments are worst case exposure conditions where the Sonos Inc S23 contains 2 radio modules:- 2.4GHz/5GHz 802.11 and 2.4GHz BLE with both radios transmitting simultaneously;- The following table is an assessment of worst case exposure conditions for the two radios in question Calculated Power Peak Peak Power Ant Numeric Safe Density Output Output Density Summation Freq. Band (MHz) Gain Gain Distance for Limit Power Power (mW/cm2) Ei/Eref @ 20 cm (dBi) (numeric) Summation (mW/cm2) (dBm) (mW) @20cm (cm) Eref 2400.0 - 2483.5 (BLE) 3.3 2.14 -6.62 0.22 2400.0 - 2483.5 3.6 2.29 23.87 243.78 (WiFi 5.5 Mbit/s) EIRP TOTAL (mW/EIRP) : 244.00 20 cm distance Total Evaluation: 0.112 mW/cm2 Note: for mobile or fixed location transmitters the minimum separation distance is 20cm, even if calculations indicate the MPE distance to be less. Issue Date: 24th June 2019 Page: 3 of 5 This test report may be reproduced in full only. The document may only be updated by MiCOM Labs personnel. All changes will be noted in the Document History section of the report. MiCOM Labs, 575 Boulder Court, Pleasanton, California 94566 USA, Phone: +1 (925) 462 0304, Fax: +1 (925) 462 0306, www.micomlabs.com

Title: Sonos Inc S23 To: FCC CFR 47 Part 1.1310 Serial #: TUVR116_FCC_MPE Rev B Worst Case Simultaneous Operation Assessment for simultaneous operation: 2.4GHz, BLE Calculated Peak Ant Numeric Peak Output Power Freq. Band Output Power Density Gain Gain Power Density (MHz) Power Limit (mW/cm2) (dBi) (numeric) (dBm) (mW/cm2) @ (mW) 20cm 2400.0 - 2483.5 3.3 2.14 -6.62 0.22 0.000093 1.00 (BLE) 2400.0 - 2483.5 3.6 2.29 23.87 243.78 0.111 1.00 (WiFi 5.5 Mbit/s) Evaluation for compliance of simultaneous transmission is determined by summation of the ratios of Pd Calc/Pd Limit < 1. Ratio = S BLEi + S Wi-Fi = 0.00009/1 + 0.111/1 = 0.112 Specification Maximum Permissible Exposure Limits FCC §1.1310 Table 1 300 to 1500MHz = f/1500 (mW/cm2) 1500 to 100,000MHz = 1 mW/cm2 Issue Date: 24th June 2019 Page: 4 of 5 This test report may be reproduced in full only. The document may only be updated by MiCOM Labs personnel. All changes will be noted in the Document History section of the report. MiCOM Labs, 575 Boulder Court, Pleasanton, California 94566 USA, Phone: +1 (925) 462 0304, Fax: +1 (925) 462 0306, www.micomlabs.com

575 Boulder Court Pleasanton, California 94566, USA Tel: +1 (925) 462 0304 Fax: +1 (925) 462 0306 www.micomlabs.com


Document Created: 2019-06-24 11:08:05
Document Modified: 2019-06-24 11:08:05
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