2AVCH-702403Wifi range extender

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interfer- ence to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one more of the following measures: • Reorient or relocate the receiving antenna. • Increase the distance between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. FCC Caution: Safety Information 1. Read these inst「uotionscarefully fo「bestuse. 2. DO NOT use the WIFI Range缸tendernear wate「。「 expose it to rain o「moistu阻 3. DO NOT use the WIFI Range Extender neαr open flames. such ascandl郎，heatsou「C郎，radiatorsand stoves. 4. Onlyolean the WIFI Range Extender with a dry cloth. 5. Caution: Risk of elect「icshook. Grounding continuity must be maintained. 6. For connection to a supply not in the U.S.A., use an 。ttaohmentplug adapte「of the prope「configurationb「 the pαNer outlet. If needed. 7. Please check prior use. if output voltage and ou「『entof the pαNer supply Is sultable b「theproduct. 8. Child『enshou Id be supervised to ensu尼that they do not playwith the appliance. F。rqu西lions or oonoerr回em旧iius at info@at，由liU四.com Manufoctu阻d and ma『幅幅dbyAtOI甘Inc. ,a响陆st33「dSt.,New\'c。rk.NY10001 atom! '" Isa甘odemarkof Atoml In且 D曲协副byatomiinN阳York. Mada in China Tv.,:,节目limitedwom::mtyfrom the date of purchase against de性eatsIn m口悟raland呐K押阳nanshlp.

Guangdong Bekey Technology Co., Ltd. Agent Authorization Company: Guangdong Bekey Technology Co., Ltd. Address: R building, DongYuan reservoir region immigration base, Butterfly Lodge Ind District, DongYuan, Heyuan 517500, China Product Name: Wifi range extender Model Number(s): 702403, WD-R750U, WD-R751U, WD-R752U, WD-R753U, WD- R754U Trademark: N/A FCC ID: 2AVCH-702403 We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2020/10/16 Name: Jiasheng Jiang Title: General Manager Company: Guangdong Bekey Technology Co., Ltd.

Guangdong Bekey Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020/10/26 Subject; Request for Confidentiality FCC ID: 2AVCH-702403 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description SOFTWARE SECURITY REQUIREMENTS FOR U-NII DEVICES In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Jiasheng Jiang Title: General Manager

Guangdong Bekey Technology Co., Ltd. Model Difference Product Name: Wifi range extender Model Number(s): 702403, WD-R750U, WD-R751U, WD-R752U, WD-R753U, WD- R754U Trademark: N/A FCC ID: 2AVCH-702403 All the model are the same circuit and RF module, except model names. Regards Sincerely Client’s signature: Client’s name / title : Jiasheng Jiang/General Manager Contact information / address: R building, DongYuan reservoir region immigration base, Butterfly Lodge Ind District, DongYuan, Heyuan 517500, China

40*20mm Label Location FCC ID: 2AVCH-702403 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:(1)This device may not cause harmful interfer ence, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Internal Photos 2.4G Antenna 2.4G/5G Antenna

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2AVCH-702403 Applied procedures / limit According to FCC §15.247(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for Occupational / Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 Where: S = power density P = power input to antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna, R=0.2m TEST RESULTS For the Max simultaneous transmission MPE Tune up Produce power Maximu m peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW / cm2 ) Result 802.11 b 15±1 16 39.81 1.58 (2dBi) 0.01252 1 Pass 802.11 U- NII-1 15±1 16 39.81 1.58 (2dBi) 0.01252 1 Pass 802.11 U-NII-3 15±1 16 39.81 1.58 (2dBi) 0.01252 1 Pass Evaluation mode Power Density/Limit Sum of the MPE rate Limit Result 802.11 B/G/N 0.01252 0.02504 1 Pass 802.11 U-NII 0.01252

No.：BCTC/RF-EMC-005Page:1of71Edition：A.1 TEST REPORT  Shenzhen BCTC Testing Co., Ltd. ReportNo.:BCTC2009001103-1E Applicant: GuangdongBekeyTechnologyCo.,Ltd. ProductName:Wifirangeextender Model/TypeRef.: 702403 TestedDate:Sep.15,2020toOct.20,2020 IssuedDate:Oct.20,2020 ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:2of71Edition：A.1 FCC ID: 2AVCH-702403 The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: Wifi range extender Trademark: N/A Model/Type Ref.: 702403 WD-R750U, WD-R751U, WD-R752U, WD-R753U, WD-R754U Prepared For: Guangdong Bekey Technology Co., Ltd. Address: R building, DongYuan reservoir region immigration base, Butterfly Lodge Ind District, DongYuan, Heyuan 517500, China Manufacturer: Guangdong Bekey Technology Co., Ltd. Address: R building, DongYuan reservoir region immigration base, Butterfly Lodge Ind District, DongYuan, Heyuan 517500, China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2F, East of B Building, Pengzhou Industrial, Fuyuan 1st Road, Qiaotou Community, Fuyong Street, Bao’an District, Shenzhen, China Sample Received Date: Sep. 15, 2020 Sample tested Date: Sep. 15, 2020 to Oct. 20, 2020 Issue Date: Oct. 20, 2020 Report No.: BCTC2009001103-1E Test Standards FCC Part15.247 ANSI C63.10:2013 KDB 662911 D01 v02r01 558074 D01 15.247 Meas Guidance v05r02 Test Results PASS Tested by: Approved by: Eric Yang/Project Handler Zero Zhou/Reviewer ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:3of71Edition：A.1 Table of Contents Page 1 .VERSION 6 2 . SUMMARY OF TEST RESULTS 7 2.1 MEASUREMENT UNCERTAINTY 8 3 . GENERAL INFORMATION 9 3.1 GENERAL DESCRIPTION OF EUT 9 3.2 DESCRIPTION OF TEST MODES 10 3.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 11 3.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 11 3.5 EQUIPMENTS LIST FOR ALL TEST ITEMS 12 3.5.1TEST FACILITY 12 4 . EMC EMISSION TEST 14 4.1 CONDUCTED EMISSION MEASUREMENT 14 4.1.1 POWER LINE CONDUCTED EMISSION LIMITS 14 4.1.2 TEST PROCEDURE 14 4.1.3 DEVIATION FROM TEST STANDARD 14 4.1.4 TEST SETUP 15 4.1.5 EUT OPERATING CONDITIONS 15 4.1.6 TEST RESULTS 16 4.2 RADIATED EMISSION MEASUREMENT 18 4.2.1 RADIATED EMISSION LIMITS 18 4.2.2 TEST PROCEDURE 19 4.2.3 DEVIATION FROM TEST STANDARD 19 4.2.4 TEST SETUP 19 4.2.5 EUT OPERATING CONDITIONS 20 4.2.6 TEST RESULTS (BETWEEN 9KHZ – 30 MHZ) 21 4.2.7 TEST RESULTS (BETWEEN 30MHZ – 1GHZ) 22 4.2.8 TEST RESULTS 24 4.3 RADIATED BAND EMISSION MEASUREMENT 30 4.3.1 TEST REQUIREMENT: 30 4.3.2 TEST PROCEDURE 30 4.3.3 DEVIATION FROM TEST STANDARD 31 4.3.4 TEST SETUP 31 4.3.5 EUT OPERATING CONDITIONS 31 ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:4of71Edition：A.1 Table of Contents Page 5 . POWER SPECTRAL DENSITY TEST 35 5.1 APPLIED PROCEDURES / LIMIT 35 5.1.1 TEST PROCEDURE 35 5.1.2 DEVIATION FROM STANDARD 35 5.1.3 TEST SETUP 35 5.1.4 EUT OPERATION CONDITIONS 35 5.1.5 TEST RESULTS 35 6 . BANDWIDTH TEST 44 6.1 APPLIED PROCEDURES / LIMIT 44 6.1.1 TEST PROCEDURE 44 6.1.2 DEVIATION FROM STANDARD 44 6.1.3 TEST SETUP 44 6.1.4 EUT OPERATION CONDITIONS 44 6.1.5 TEST RESULTS 45 7 . PEAK OUTPUT POWER TEST 53 7.1 APPLIED PROCEDURES/LIMIT 53 7.1.1 TEST PROCEDURE 53 7.1.2 DEVIATION FROM STANDARD 53 7.1.3 TEST SETUP 53 7.1.4 EUT OPERATION CONDITIONS 53 7.1.5 TEST RESULTS 54 8 . 100 KHZ BANDWIDTH OF FREQUENCY BAND EDGE 55 8.1 APPLICABLE STANDARD 55 8.2 TEST PROCEDURE 55 8.3 DEVIATION FROM STANDARD 55 8.4 TEST SETUP 55 8.5 EUT OPERATION CONDITIONS 55 9 . DUTY CYCLE OF TEST SIGNAL 64 9.1 STANDARD REQUIREMENT 64 9.2 FORMULA: 64 10 . ANTENNA REQUIREMENT 67 10.1 STANDARD REQUIREMENT 67 10.2 EUT ANTENNA 67 ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:5of71Edition：A.1 Table of Contents Page 11 . EUT TEST PHOTO 68 12 . EUT PHOTO 70 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:6of71Edition：A.1 1.VERSION Report No. Issue Date Description Approved BCTC2009001103-1E Oct. 20, 2020 Original Valid ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:7of71Edition：A.1 2. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.247) , Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS 15.247 (a)(2) 6dB Bandwidth PASS 15.247 (b) Peak Output Power PASS 15.247 (d) Radiated Spurious Emission PASS 15.247 (e) Power Spectral Density PASS 15.205 Restricted Band of Operation PASS 15.247 (d) Band Edge (Out of Band Emissions) PASS 15.203 Antenna Requirement PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:8of71Edition：A.1 2.1 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U，where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2，providing a level of confidence of approximately 95 %。 No. Item Uncertainty 1 3m camber Radiated spurious emission(30MHz-1GHz) U=4.3dB 2 3m chamber Radiated spurious emission(1GHz-18GHz) U=4.5dB 3 3m chamber Radiated spurious emission(18GHz-40GHz) U=3.34dB 4 Conducted Adjacent channel power U=1.38dB 5 Conducted output power uncertainty Above 1G U=1.576dB 6 Conducted output power uncertainty below 1G U=1.28dB 7 humidity uncertainty U=5.3% 8 Temperature uncertainty U=0.59°C ReportNo.: BCTC20090011…

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ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:47of71Edition：A.1 Temperature： 26 °C Relative Humidity： 54% Pressure： 101kPa Test Voltage ： AC120V/60Hz Test Mode ： TX g Mode Frequency (MHz) 6dB bandwidth (MHz) ANTA 6dB bandwidth (MHz) ANTB Limit (kHz) Result 2412 16.33 16.34 500 Pass 2437 16.33 16.34 500 Pass 2462 16.34 16.36 500 Pass Note: A(B) Represent the value of antenna A and B, The worst data is Antenna B ,only shown Antenna B Plot. TX CH 01 ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:48of71Edition：A.1 TX CH 06 TX CH 11 ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:49of71Edition：A.1 Temperature： 26 °C Relative Humidity： 54% Pressure： 101kPa Test Voltage ： AC120V/60Hz Test Mode ： TX n Mode(20M) Frequency (MHz) 6dB bandwidth (MHz) ANTA 6dB bandwidth (MHz) ANTB Limit (kHz) Result 2412 17.03 16.79 500 Pass 2437 16.79 17.02 500 Pass 2462 16.78 16.69 500 Pass Note: A(B) Represent the value of antenna A and B, The worst data is Antenna A, only shown Antenna A Plot. TX CH 01 ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:50of71Edition：A.1 TX CH 06 TX CH 11 ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:51of71Edition：A.1 Temperature： 26 °C Relative Humidity： 54% Pressure： 101kPa Test Voltage ： AC120V/60Hz Test Mode ： TX n Mode(40M) Frequency (MHz) 6dB bandwidth (MHz) ANTA 6dB bandwidth (MHz) ANTB Limit (kHz) Result 2422 35.83 35.82 500 Pass 2437 35.82 35.82 500 Pass 2452 35.84 35.86 500 Pass Note: A(B) Represent the value of antenna A and B, The worst data is Antenna B, only shown Antenna B Plot. TX CH 03 ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:52of71Edition：A.1 TX CH 06 TX CH 09 ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:53of71Edition：A.1 7. PEAK OUTPUT POWER TEST 7.1 APPLIED PROCEDURES/LIMIT FCC Part15 (15.247) , Subpart C Section Test Item Limit Frequency Range (MHz) Result 15.247(b)(3) Peak Output Power 1 watt or 30dBm 2400-2483.5 PASS 7.1.1 TEST PROCEDURE a. The EUT was directly connected to the Power mete r 7.1.2 DEVIATION FROM STANDARD No deviation. 7.1.3 TEST SETUP 7.1.4 EUT OPERATION CONDITIONS The EUT tested system was configured as the statements of 2.4 Unless otherwise a special operating condition is specified in the follows during the testing. ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:54of71Edition：A.1 7.1.5 TEST RESULTS Temperature： 26 °C Relative Humidity： 54% Pressure： 101kPa Test Voltage ： AC120V/60Hz Frequency Maximum Conducted Output Power(PK) ANTA Maximum Conducted Output Power(PK) ANTB To t a l P o w e r Conducted Output Power(PK) LIMIT (MHz) (dBm) (dBm) (dBm) dBm 802.11b 2412 14.62 14.12 / 30 2437 14.81 14.74 / 30 2462 14.88 14.64 / 30 802.11g 2412 13.54 13.25 / 30 2437 13.63 13.48 / 30 2462 13.54 13.80 / 30 802.11n 20 2412 11.98 11.89 14.95 30 2437 12.46 12.16 15.32 30 2462 12.22 12.08 15.16 30 802.11n 40 2422 11.29 11.09 14.20 30 2437 11.19 11.05 14.13 30 2452 11.32 11.19 14.27 30 ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:55of71Edition：A.1 8. 100 KHZ BANDWIDTH OF FREQUENCY BAND EDGE 8.1 APPLICABLE STANDARD in any 100 kHz bandwidth outside the frequency bands in which the spread spectrum intentional radiator in operating, the radio frequency power that is produced by the intentional radiator shall be at least 20dB below that in the 100kHz bandwidth within the band that contains the highest level of the desired power, In addition, radiated emissions which fall in the restricted bands, as defined in§15.205(a), must also comply with the radiated emission limits specified in15.209(a). 8.2 TEST PROCEDURE Using the following spectrum analyzer setting: a) Set the RBW = 100KHz. b) Set the VBW = 300KHz. c) Sweep time = auto couple. d) Detector function = peak. e) Trace mode = max hold. f) Allow trace to fully stabilize. 8.3 DEVIATION FROM STANDARD No deviation. 8.4 TEST SETUP 8.5 EUT OPERATION CONDITIONS The EUT tested system was configured as the statements of 2.4 Unless otherwise a special operating condition is specified in the follows during the testing. ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:56of71Edition：A.1 8.6 TEST RESULTS Note: A(B) Represent the value of antenna A and B, The worst data is Antenna A ,only shown Antenna A Plot. 802.11b: Band Edge, Left Side 802.11b: Band Edge, Right Side ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:57of71Edition：A.1 802.11g: Band Edge, Left Side 802.11g: Band Edge, Right Side ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:58of71Edition：A.1 802.11n-HT20: Band Edge, Left Side 802.11n-HT20: Band Edge, Right Side ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:59of71Edition：A.1 802.11n-HT40: Band Edge, Left Side 802.11n-HT40: Band Edge, Right Side ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:60of71Edition：A.1 CONDUCTED EMISSION MEASUREMENT Note: A(B) Represent the value of antenna A and B, The worst data is Antenna A ,only shown Antenna A Plot. 802.11b Low Channel 2412MHz Middle Channel 2437MHz High Channel 2462MHz ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:61of71Edition：A.1 802.11g Low Channel 2412MHz Middle Channel 2437MHz High Channel 2462MHz ReportNo.: BCTC2009001103-1E No.：BCTC/RF-EMC-005Page:62of71Edition：A.1 802.11n20 L…

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Conducted Measureme nt Photos Radiated Measurement Photos