2AB7YVDW24DRTHWiFi Module

Viper Design, LLC TCBJ FORM-4 Issued by: TCB Administrator Revision 6 12/06/10 2020.11.14 MET Laboratories, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, LYNQ Technologies, Inc. hereby authorize (Shenzhen STS Test Services Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Name: Brian Kendall Bell Signature:

Viper Design, LLC TCBJ FORM-4 Issued by: TCB Administrator Revision 6 12/06/10 2020.11.14 MET Laboratories, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (WiFi Module / VDWIFI-RTH/ FCC ID: 2AB7YVDW24DRTH) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the • Schematics • Block diagram • Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. required to be submitted with this application be permanently withheld from public review. Please contact me if there is any information you may need. Sincerely, Name: Brian Kendall Bell Signature:

Single Modular approval Declaration letter We ,apply Single modular approval for Product Name: Viper Design, LLC Model: VDWIFI-RTH FCC ID: 2AB7YVDW24DRTH According to 996369 D01 Module Equip Auth Guide v01r04 and 15.212 requirement: 1) The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must beon the module assembly; Answer ：Yes，with shielded 2)The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal; Answer ：Yes ；All inputs to the modules are buffered through logic or microprocessor inputs. 3)The modular transmitter must have its own power supply regulation. Answer ：Yes ；A low drop out regulator is used for modular power supply regulation. 4)The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per Sections 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b); Answer ：Yes ；Device is equipped with Integral antenna. (5)The module must demonstrate compliance in a stand-alone configuration; Answer ：Yes，distance between modular and all AEs are longer than 20cm ，refer to setup photo. (6) The module must be labelled with its permanently affixed FCC ID label, or use an electronic display (See KDB Publication 784748 about labelling requirements); Answer ：Yes ；The modular has a permanent fixed label, and below statement was listed in the User Manual;The host device must be labeled to display the FCCID of the module Contains FCC ID: 2AB7YVDW24DRTH (7)The module must comply with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee; Answer ：Yes ,The module comply with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee, Refer to test report and user manual . (8)The module must comply with RF exposure requirements Answer ：Yes ,Transmitter meets MPE calculation of 47 CFR 1.1307 . Refer to MPE Reports and Refer to modular installation manual. Date 2020-11-14 Signature Name: Brian Kendall Bell Title: Manager Company: Viper Design, LLC Address: 85 Cude Lane, Madison, TN 37115, United States Of America

Page 1 of 1 Report No.: STS2009132 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: VDWIFI-RTH Photo 1 Photo 2 WIFI ANT

FCC/IC Label FCC ID: 2AB7YVDW24DRTH IC: 20699-VPW24DRTH 180*18mm, Laser font

Page 1 of 1 Report No.: STS2009132 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: VDWIFI-RTH Photo 1 Photo 2

RF Exposure Report FCC ID: 2AB7YVDW24DRTH RF Exposure Measurement The limit for Maximum Permissible Exposure (MPE) specified in FCC 1.1310 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. RF Exposure Limit According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environmental impact of the human exposure to radio-frequency (RF) radiation as specified in 1.1307 (b) Limits for Maximum Permissible Exposure (MPE) F= Frequency in MHz Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm²) Limits for Occupational / controlled Exposures 300 - 1500 -- -- F/300 1500 – 100000 -- -- 5.0 Limits for General population / Uncontrolled Exposure 300 - 1500 -- -- F/1500 1500 – 100000 -- -- 1.0 Friss Formula Friss Transmission 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 the center of radiator in cm If we know the maximum gain of the antenna and the total output power to the antenna, through calculation, we will know MPE value at distance 20cm. EUT Operation condition EUT was enabled to transmit and receive at lowest, middle and highest channels. Classification The antenna of this product, under normal use condition, is at least 20cm away from the body of the user. Warning statement to the user for keeping at least 20cm or more separation distance from the antenna should be included in the User manual. So, this device is classified as Mobile device. Mode 2.4G WIFI Detector Conducted (Peak) 802.11b 19.7±1dBm 802.11g 22±1dBm 802.11n20 21±1dBm ANT Gain (G) 0dBi (gain of antenna in linear scale=1 802.11b 1 2437 20.7 117.4898 0.02339 1 802.11g 1 2437 23 199.5262 0.03971 1 802.11 n20 1 2437 22 158.4893 0.03155 1 Power Density (mW/cm²) Limit (mW/cm²) ANT Gain(gain of antenna in linear scale) Protocol Channel Frequency (MHz) Output Power to Antenna (dBm) Output Power to Antenna (mW) According to the maximum gain of the antenna and the total output power to the antenna, through calculation, we will know MPE value 0.03971 at distance 20cm. This is less than the limit 1, so the SAR test is not required.

Any reproduction of this document must be done in full. No single part of this document may be reproduced without permission from STS, all test data presented in this report is only applicable to presented test sample. Shenzhen STS Test Services Co., Ltd. A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China TEL: +86-755 3688 6288 FAX: +86-755 3688 6277 E-mail:[email protected] RADIO TEST REPORT Report No.:STS2009132W01 Issued for Viper Design, LLC 85 Cude Lane, Madison, TN 37115, United States Of America Product Name: WiFi Module Brand Name: Viper Model Name: VDWIFI-RTH Series Model: N/A FCC ID: 2AB7YVDW24DRTH IC: 20699-VPW24DRTH Test Standard: FCC Part 15.247 RSS-247 Issue 2, February 2017 S T L A B S S T L A B S Page 2 of 70 Report No.:STS2009132W01 TEST RESULT CERTIFICATION Applicant’s Name ................. : Viper Design, LLC Address ................................. : 85 Cude Lane, Madison, TN 37115, United States Of America Manufacturer's Name ........... : Viper Design, LLC Address ................................. : 85 Cude Lane, Madison, TN 37115, United States Of America Product Description Product Name ........................ : WiFi Module Brand Name ........................... : Viper Model Name .......................... : VDWIFI-RTH Series Model .......................... : N/A Test Standards ..................... : FCC Part 15.247 RSS-247 Issue 2, February 2017 RSS-Gen Issue 5 ,March 2019 Test Procedure........................: ANSI C63.10-2013 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC/IC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of STS, this document only be altered or revised by STS, personal only, and shall be noted in the revision of the document. Date of Test ........................................... : Date of receipt of test item ...................... : 26 Oct. 2020 Date (s) of performance of tests ............. : 26 Oct. 2020 ~ 31 Oct. 2020 Date of Issue .......................................... : 31 Oct. 2020 Test Result .............................................. : Pass Testing Engineer : (Chris Chen) Technical Manager : (Sean she) Authorized Signatory : (Vita Li) Page 3 of 70 Report No.:STS2009132W01 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 10 2.3 TEST SOFTWARE AND POWER LEVEL 10 2.4 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 11 2.5 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 12 2.6 EQUIPMENTS LIST FOR ALL TEST ITEMS 13 3. EMC EMISSION TEST 15 3.1 CONDUCTED EMISSION MEASUREMENT 15 3.2 RADIATED EMISSION MEASUREMENT 19 4.CONDUCTED SPURIOUS & BAND EDGE EMISSION 32 4.1 LIMIT 32 4.2 TEST PROCEDURE 32 4.3DEVIATION FROM STANDARD 32 4.4 TEST SETUP 32 4.5 EUT OPERATION CONDITIONS 32 4.6 TEST RESULTS 33 5. POWER SPECTRAL DENSITY TEST 45 5.1 LIMIT 45 5.2 TEST PROCEDURE 45 5.3 DEVIATION FROM STANDARD 45 5.4 TEST SETUP 45 5.5 EUT OPERATION CONDITIONS 45 5.6 TEST RESULTS 46 6. BANDWIDTH TEST 52 6.1 LIMIT 52 6.2 TEST PROCEDURE 52 6.3 DEVIATION FROM STANDARD 52 6.4 TEST SETUP 52 6.5 EUT OPERATION CONDITIONS 52 Page 4 of 70 Report No.:STS2009132W01 Table of Contents Page 6.6 TEST RESULTS 53 7. PEAK OUTPUT POWER TEST 65 7.1 LIMIT 65 7.2 TEST PROCEDURE 65 7.3 DEVIATION FROM STANDARD 65 7.4 TEST SETUP 65 7.5 EUT OPERATION CONDITIONS 65 7.6 TEST RESULTS 66 8. ANTENNA REQUIREMENT 68 8.1 STANDARD REQUIREMENT 68 8.2 EUT ANTENNA 68 9. FREQUENCY STABILITY 69 9.1 LIMITS OF FREQUENCY STABILITY MEASUREMENT 69 9.2 TEST PROCEDURE 69 9.3 TEST RESULT 69 APPENDIX-PHOTOS OF TEST SETUP 70 Page 5 of 70 Report No.:STS2009132W01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 31 Oct. 2020 STS2009132W01 ALL Initial Issue Page 6 of 70 Report No.:STS2009132W01 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247,Subpart C RSS-247 Issue 2 Standard Section Test Item Judgment Remark 15.207 RSS-Gen 8.8 Conducted Emission PASS -- 15.247 (a)(2) RSS-Gen 6.7 RSS-247 5.2 a) 6dB&99% Bandwidth PASS -- 15.247 (b)(3) RSS-247 5.4 d) Output Power PASS -- 15.209 RSS-Gen 8.9/8.10 Radiated Spurious Emission PASS -- 15.247 (d) RSS-247 5.5 RSS-Gen 8.9/8.10 Conducted Spurious & Band Edge Emission PASS -- 15.247 (e) RSS-247 5.2 b) Power Spectral Density PASS -- 15.205 RSS-Gen 8.9/8.10 Restricted Band Edge Emission PASS -- Part 15.247(d)/part 15.209(a) RSS-247 5.5 RSS-Gen 8.9/8.10 Band Edge Emission PASS -- 15.203 RSS-Gen 6.8 Antenna Requirement PASS -- RSS-Gen 6.11/8.11 Frequency Stability PASS -- NOTE: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2013. Page 7 of 70 Report No.:STS2009132W01 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 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 RF output power, conducted ±0.68dB 2 Unwanted Emissions, conducted ±2.988dB 3 All emissions, radiated 30-1GHz ±5.6dB 4 All emissions, radiated 1G-6GHz ±5.5dB 5 All emissions, radiated>6G ±5.8dB 6 Conducted Emission (9KHz-150KHz) ±3.37dB 7 Conducted Emission (150KHz-30MHz) ±3.83dB Page 8 of 70 Report No.:STS2009132W01 2. GENE…

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Page 1 of 2 FCC ID: 2AB7YVDW24DRTH IC: 20699-VPW24DRTH DTS Setup photo Model name: VDWIFI-RTH DTS conduction DTS radiation L Page 2 of 2 FCC ID: 2AB7YVDW24DRTH IC: 20699-VPW24DRTH DTS radiation H