2ADXC20WMD3AAwireless extender (WIFI)

FCC Radiation Exposure Statement: 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 Warning 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. NOTE 1: 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 interference 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 or more of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation 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. NOTE 2: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Report No.: W EXHIBI EUT View 1 EUT View 2 WTH20X010 T 2 - EUT 1 2 01065W T EXTER RNAL PH HOTOGR APHS M Model: LKV3 F 88M-DUAL FCC Part 15E Report No.: W EUT View 3 EUT View 4 WTH20X010 3 4 01065W M Model: LKV3 F 88M-DUAL FCC Part 15E Report No.: W EUT View 5 EUT View 6 WTH20X010 5 6 01065W M Model: LKV3 F 88M-DUAL FCC Part 15E Report No.: W EUT View 7 EUT View 8 WTH20X010 7 8 01065W M Model: LKV3 F 88M-DUAL FCC Part 15E Report No.: W EUT View 9 EUT View 1 WTH20X010 9 10 01065W M Model: LKV3 F 88M-DUAL FCC Part 15E

Report No.: W EXHIBI Proposed Specificatio n silk-screened Proposed WTH20X010 T 1 - PRO FCC ID La ns: Text is b d onto the EU Label Loca 01065W ODUCT L abel Forma F black in colo UT or shall be ation on EU LABELIN at FCC ID: 2A r and justifie e affixed at a UT FCC NG ADXC20W ed. Labels ar conspicuous ID Label Lo WMD3AA re printed in location on t cation M indelible ink the EUT. Model: LKV3 F k on perman 88M-DUAL FCC Part 15E nent adhesivee

Report No.: W EXHIBI EUT Housi n EUT Housi n WTH20X010 T 3 - EUT ng and Boar ng and Boar 01065W T INTER rd View 1 rd View 2 NAL PHO OTOGRA APHS M Model: LKV3 F 88M-DUAL FCC Part 15E Report No.: W Solder Boar Solder Boar WTH20X010 rd-Compone rd-Compone 01065W ent View 1 ent View 2 M Model: LKV3 F 88M-DUAL FCC Part 15E Report No.: W Solder Boar Solder Boar WTH20X010 rd-Compone rd-Compone 01065W ent View 3 ent View 4 M Model: LKV3 F 88M-DUAL FCC Part 15E Report No.: W Solder Boar Solder Boar WTH20X010 rd-Compone rd-Compone 01065W ent View 5 ent View 6 M Model: LKV3 F 88M-DUAL FCC Part 15E Report No.: W Solder Boa r Antenna Vi WTH20X010 rd-Compone iew W 01065W ent View 7 Wi-Fi Antenna a 2 M Wi-Fi Antenn Model: LKV3 F na 1 88M-DUAL FCC Part 15E

1. MAXIMUM PERMISSIBLE EXPOSURE (MPE) 1.1 General Information Client Information Applicant: Shenzhen Lenkeng Technology Co., Ltd Address of applicant: West 4F,Jinguangxia Culture&Tech Park, 3 Guangxia Road, Shenzhen, China Manufacturer: Shenzhen Lenkeng Technology Co., Ltd Address of manufacturer: West 4F,Jinguangxia Culture&Tech Park, 3 Guangxia Road, Shenzhen, China General Description of EUT: Product Name: wireless extender Trade Name: / Model No.: LKV388M-DUAL Adding Model(s): LKV388N-DUAL FCC ID: 2ADXC20WMD3AA Rated Voltage: DC5V Battery Capacity: / Power Adapter: MODEL: NBS12E050200VU INPUT: AC100-240V, 50/60Hz, 0.3A OUTPUT: DC5V, 2A Software Version: V1.0 Hardware Version: V1.0 Technical Characteristics of EUT: Support Standards: 802.11ac-VHT20, 802.11ac-VHT40 Frequency Range: 5150-5250MHz, 5725-5850MHz RF Output Power: 5150-5250MHz: 10.89dBm (Conducted) 5725-5850MHz: 10.19dBm (Conducted) Type of Modulation: BPSK, QPSK,16QAM,64QAM, 256QAM Data Rate: 6-54Mbps, up to 400Mbps Type of Antenna: External Antenna Antenna Gain: 5dBi 1.2 Standard Applicable According to §1.1307(b)(1) and KDB 447498 D01 General RF Exposure Guidance v06, system operating under the provisions of this section shall be operating in a manner that the public is not exposed to radio frequency energy level in excess limit for maximum permissible exposure. (a) 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 Times | 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 1500-100000 / / 5 6 (b) 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 Times | 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 1500-100000 / / 1 30 Note: f = frequency in MHz: * = Plane-wave equivalents power density 1.3 MPE Calculation Method S = (30*P*G) / (377*R 2 ) S = power density (in appropriate units, e.g., mw/cm 2 ) P = power input to the antenna (in appropriate units, e.g., mw) G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor is normally numeric gain. R = distance to the center of radiation of the antenna (in appropriate units, e.g., cm) 1.4 MPE Calculation Result Maximum Tune-Up output power: 11(dBm) Maximum peak output power at antenna input terminal: 12.59(mW) Prediction distance: >20(cm) Prediction frequency: 5240 (MHz) Antenna gain:5.0(dBi) Directional gain (numeric gain): 3.16 The worst case is power density at prediction frequency at 20cm: 0.0079(mw/cm 2 ) MPE limit for general population exposure at prediction frequency: 1 (mw/cm 2 ) Result: Pass

Model: LKV388M-DUAL Report No.: WTH20X01001065W Page 1 of 74 FCC Part 15E FCC Part 15E Measurement and Test Report For Shenzhen Lenkeng Technology Co., Ltd West 4F,Jinguangxia Culture&Tech Park, 3 Guangxia Road, Shenzhen , China FCC ID: 2ADXC20WMD3AA FCC Rule(s): FCC Part 15.407 Product Description: wireless extender Tested Model: LKV388M-DUAL Report No.: WTH20X01001065W Sample Receipt Date: Jan.06, 2020 Tested Date: Jan.06, 2020 to Mar.04, 2020 Issued Date: Mar.04, 2020 Tested By: Mike Shi / Engineer Reviewed By: Silin Chen / EMC Manager Approved & Authorized By: Jandy So / PSQ Manager Prepared By: Shenzhen SEM Test Technology Co., Ltd. 1/F, Building A, Hongwei Industrial Park, Liuxian 2nd Road, Bao'an District, Shenzhen, P.R.C.（518101） Tel.: +86-755-33663308 Fax.: +86-755-33663309 Website: www.semtest.com.cn Note: This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen SEM Test Technology Co., Ltd. Model: LKV388M-DUAL Report No.: WTH20X01001065W Page 2 of 74 FCC Part 15E TABLE OF CONTENTS 1. GENERAL INFORMATION ................................................................................................................................... 4 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ............................................................................... 4 1.2 TEST STANDARDS ................................................................................................................................................... 5 1.3 TEST METHODOLOGY ............................................................................................................................................. 5 1.4 TABLE FOR PARAMETERS OF TEST SOFTWARE SETTING ......................................................................................... 5 1.5 EUT OPERATING DURING TEST .............................................................................................................................. 6 1.6 TEST FACILITY ....................................................................................................................................................... 6 1.7 EUT SETUP AND TEST MODE ................................................................................................................................. 7 1.8 MEASUREMENT UNCERTAINTY .............................................................................................................................. 8 1.9 TEST EQUIPMENT LIST AND DETAILS ..................................................................................................................... 9 2. SUMMARY OF TEST RESULTS ......................................................................................................................... 11 3. RF EXPOSURE ....................................................................................................................................................... 12 3.1 STANDARD APPLICABLE ....................................................................................................................................... 12 3.2 TEST RESULT........................................................................................................................................................ 12 4. ANTENNA REQUIREMENT ................................................................................................................................ 13 4.1 STANDARD APPLICABLE ....................................................................................................................................... 13 4.2 EVALUATION INFORMATION ................................................................................................................................ 13 5. AUTOMATICALLY DISCONTINUE TRANSMISSION .................................................................................. 14 5.1 STANDARD APPLICABLE ....................................................................................................................................... 14 5.2 SUMMARY OF TEST RESULTS ............................................................................................................................... 14 6. CONDUCTED EMISSIONS .................................................................................................................................. 15 6.1 TEST PROCEDURE ................................................................................................................................................. 15 6.2 BASIC TEST SETUP BLOCK DIAGRAM ................................................................................................................... 15 6.3 TEST RECEIVER SETUP ......................................................................................................................................... 15 6.4 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 15 7. POWER SPECTRAL DENSITY ........................................................................................................................... 18 7.1 STANDARD APPLICABLE ....................................................................................................................................... 18 7.2 TEST PROCEDURE ................................................................................................................................................. 18 7.3 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 19 8. EMISSION BANDWIDTH AND OCCUPIED BANDWIDTH ........................................................................... 28 8.1 STANDARD APPLICABLE ....................................................................................................................................... 28 8.2 TEST PROCEDURE ......…

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