RF Exposure Info (MPE)

FCC ID: 2AHBN-AP43

RF Exposure Info

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FCCID_4326237

RF Exposure Report Report No.: SA190211C09 FCC ID: 2AHBN-AP43 Test Model: AP43E, AP43 Received Date: Feb. 11, 2019 Test Date: Feb. 21 ~ Apr. 16, 2019 Issued Date: Apr. 18, 2019 Applicant: Mist Systems, Inc. Address: 1601 South De Anza Blvd. Suite 248 Cupertino California United States 95014 Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Lab Address: No. 47-2, 14th Ling, Chia Pau Vil., Lin Kou Dist., New Taipei City, Taiwan (R.O.C.) Test Location: No. 19, Hwa Ya 2nd Rd., Wen Hwa Vil., Kwei Shan Dist., Taoyuan City 33383, TAIWAN (R.O.C.) FCC Registration / 788550 / TW0003 Designation Number: This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth ourfindings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. The report must not be used by the client to claim product certification, approval, or endorsement by TAF or any government agencies. Report No.: SA190211C09 Page No. 1 / 7 Report Format Version: 6.1.1

Table of Contents Release Control Record .................................................................................................................................. 3 1 Certificate of Conformity...................................................................................................................... 4 2 RF Exposure .......................................................................................................................................... 5 2.1 Limits for Maximum Permissible Exposure (MPE) .............................................................................. 5 2.2 MPE Calculation Formula ................................................................................................................... 5 2.3 Classification ....................................................................................................................................... 5 3 Calculation Result of Maximum Conducted Power........................................................................... 6 Report No.: SA190211C09 Page No. 2 / 7 Report Format Version: 6.1.1

Release Control Record Issue No. Description Date Issued SA190211C09 Original release Apr. 18, 2019 Report No.: SA190211C09 Page No. 3 / 7 Report Format Version: 6.1.1

1 Certificate of Conformity Product: Premium 802.11ax WiFi and BLE AP Brand: Mist Test Model: AP43E, AP43 Sample Status: Engineering sample Applicant: Mist Systems, Inc. Test Date: Feb. 21 ~ Apr. 16, 2019 Standards: FCC Part 2 (Section 2.1091) KDB 447498 D01 General RF Exposure Guidance v06 IEEE C95.1-1992 The above equipment has been tested by Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch, and found compliance with the requirement of the above standards. The test record, data evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts of the measurements of the sample’s RF characteristics under the conditions specified in this report. Prepared by : , Date: Apr. 18, 2019 Celine Chou / Senior Specialist Approved by : , Date: Apr. 18, 2019 Bruce Chen / Project Engineer Report No.: SA190211C09 Page No. 4 / 7 Report Format Version: 6.1.1

2 RF Exposure 2.1 Limits for Maximum Permissible Exposure (MPE) Frequency Range Electric Field Magnetic Field Power Density Average Time (MHz) Strength (V/m) Strength (A/m) (mW/cm2) (minutes) Limits For General Population / Uncontrolled Exposure 300-1500 … … F/1500 30 1500-100,000 … … 1.0 30 F = Frequency in MHz 2.2 MPE Calculation Formula Pd = (Pout*G) / (4*pi*r2) where Pd = power density in mW/cm2 Pout = output power to antenna in mW G = gain of antenna in linear scale pi = 3.1416 r = distance between observation point and center of the radiator in cm 2.3 Classification The antenna of this product, under normal use condition, is at least 37cm away from the body of the user. So, this device is classified as Mobile Device. Report No.: SA190211C09 Page No. 5 / 7 Report Format Version: 6.1.1

3 Calculation Result of Maximum Conducted Power WLAN Frequency Band Max Power Antenna Gain Distance Power Density Limit (MHz) (dBm) (dBi) (cm) (mW/cm2) (mW/cm2) Internal antenna + Eth6 Radio, CDD Mode 5180-5240 24.17 11.45 37 0.212 1 5745-5825 25.94 11.45 37 0.319 1 Internal antenna + Eth6 Radio, Beamforming Mode 5180-5240 23.74 11.45 37 0.192 1 5745-5825 23.72 11.45 37 0.191 1 Internal antenna + Eth7 Radio, CDD Mode 2412-2462 21.86 5.51 37 0.032 1 5180-5240 25.38 8.46 37 0.141 1 5745-5825 25.43 8.46 37 0.142 1 Internal antenna + Eth8 Radio, CDD Mode 2412-2462 25.44 9.37 37 0.176 1 5745-5825 28.52 10.96 37 0.516 1 Internal antenna + Eth8 Radio, Beamforming Mode 2412-2462 25.10 9.37 37 0.163 1 5745-5825 24.53 10.96 37 0.206 1 External antenna + Eth6 Radio, CDD Mode 5180-5240 24.17 12.02 37 0.242 1 5745-5825 25.94 12.02 37 0.363 1 External antenna + Eth6 Radio, Beamforming Mode 5180-5240 23.74 12.02 37 0.219 1 5745-5825 23.72 12.02 37 0.218 1 External antenna + Eth7 Radio, CDD Mode 2412-2462 21.88 7.01 37 0.045 1 5180-5240 25.38 9.01 37 0.160 1 5745-5825 25.43 9.01 37 0.162 1 External antenna + Eth8 Radio, CDD Mode 2412-2462 25.44 10.02 37 0.204 1 External antenna + Eth8 Radio, Beamforming Mode 2412-2462 25.10 10.02 37 0.189 1 Report No.: SA190211C09 Page No. 6 / 7 Report Format Version: 6.1.1

BT LE Frequency Band Max Power Antenna Gain Distance Power Density Limit (MHz) (dBm) (dBi) (cm) (mW/cm2) (mW/cm2) BT-Omni antenna + BT LE Radio 2402-2480 6.39 0.1 37 0.0003 1 BT-Directional antenna + BT LE Radio 2402-2480 6.39 4.5 37 0.001 1 Note: Determining compliance based on the results of the compliance measurement, not taking into account measurement instrumentation uncertainty. Internal antenna + Eth6 Radio 1. 5GHz: Directional gain = 10 log[(10G1 /20 + 10G2 /20 + ... + 10GN /20)2/4]= 11.45dBi Internal antenna + Eth7 Radio 1. 2.4GHz: Directional gain = 10 log[(10G1 /20 + 10G2 /20 + ... + 10GN /20)2/2]= 5.51dBi 2. 5GHz: Directional gain = 10 log[(10G1 /20 + 10G2 /20 + ... + 10GN /20)2/2]= 8.46dBi Internal antenna + Eth8 Radio 1. 2.4GHz: Directional gain = 10 log[(10G1 /20 + 10G2 /20 + ... + 10GN /20)2/4]= 9.37dBi 2. 5GHz: Directional gain = 10 log[(10G1 /20 + 10G2 /20 + ... + 10GN /20)2/4]= 10.96dBi External antenna + Eth6 Radio 1. 5GHz: Directional gain = 6dBi + 10log(4) = 12.02dBi External antenna + Eth7 Radio 1. 2.4GHz: Directional gain = 4dBi + 10log(2) = 7.01dBi 2. 5GHz: Directional gain = 6dBi + 10log(2) = 9.01dBi External antenna + Eth8 Radio 1. 2.4GHz: Directional gain = 4dBi + 10log(4) = 10.02dBi Conclusion: The Eth6 Radio & Eth7 Radio & Eth8 Radio & BT LE Radio can transmit simultaneously, but will not simultaneously in the same sub-band, the formula of calculated the MPE is: CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1 CPD = Calculation power density LPD = Limit of power density AP43 (Internal antenna): Eth6 Radio WLAN + Eth7 Radio WLAN + Eth8 Radio WLAN + BT LE = 0.319 / 1 + 0.142 / 1 + 0.516 / 1 + 0.001 / 1 = 0.978 AP43E (External antenna): Eth6 Radio WLAN + Eth7 Radio WLAN + Eth8 Radio WLAN + BT LE = 0.363 / 1 + 0.162 / 1 + 0.204 / 1 + 0.001 / 1 = 0.730 Therefore the maximum calculations of above situations are less than the “1” limit. ---END--- Report No.: SA190211C09 Page No. 7 / 7 Report Format Version: 6.1.1


Document Created: 2019-06-24 16:56:55
Document Modified: 2019-06-24 16:56:55
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