2AYDP-K670Wireless Rechargeable keyboard & Mouse Set

S21022502902 Model: K670+M212 N20190309V1 ATTACHMENT PHOTOGRAPHS OF EUT Photo 1 Photo 2 S21022502902 Model: K670+M212 N20190309V1 Photo 3 Photo 4 S21022502902 Model: K670+M212 N20190309V1 Photo 5 Photo 6

Label and its Location

S21022502902 Model: K670+M212 N20190309V1 Photo 7 Photo 8 ANT S21022502902 Model: K670+M212 N20190309V1 Photo 9 Photo 10 S21022502902 Model: K670+M212 N20190309V1 Photo 11 Photo 12 S21022502902 Model: K670+M212 N20190309V1 Photo 13

version01 Shenzhen Fucaixin Electronics Co., Ltd. Declaration concerning Antenna Specification It is hereby declared that the product Model No.: K670+M212,K618+M222,K620+M212,K616+M222,K801+M217,K620+M298,K811+M217,K802+M2 11,K912+M212,K913+M215,K968+M215 FCC ID: 2AYDP-K670 fulfills the requirement in FCC test relating to the antenna type. The device specified above confirms to the FCC recommendations for PCB antenna type(s) described below: Model No. of antenna: N/A Type of antenna: PCB Antenna Gain of the antenna: 0 dBi Frequency range: 2402-2480 MHz The mounting of the antenna is fixed to the radio module and no other antenna should be used. Company name: Shenzhen Fucaixin Electronics Co., Ltd. Address: Building D, No. 21, Nanpu Road, Shajing Street, Baoan District, Shenzhen,China. City: Shenzhen ZIP / Postal code: Country: China Name: Xieheng Xue Date: 2021/04/06 Signature:

FCC ID: 2AYDP-K670 Portable device According to §15.247(e)(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. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]·[√f(GHZ)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where: • f(GHZ) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. BLE: Antenna Type :PCB Antenna Antenna Gain: 0 dBi Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n 1g SAR Exclusion threshold SAR test exclusion 2.4020.757 1.1900±1 1 1.259<50.390233.00YES 2.44 -0.17 0.9620±1 1 1.259<50.393303.00YES 2.480 -0.578 0.8750±1 1 1.259<50.396513.00YES GFSK Conclusion: For the max result : 0.39651≤ 3.0 for 1-g SAR, No SAR is required. Signature: Date: 2021-04-07 NAME AND TITLE (Please print or type): Alex Li /Manager COMPANY (Please print or type): Shenzhen NTEK Testing Technology Co., Ltd./ 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Bao’an District, Shenzhen 518126 P.R. China

Report No.: S21022502902001 Version.1.3 Page 1 of 47 RADIO TEST REPORT FCC ID: 2AYDP-K670 Product: Wireless Rechargeable keyboard & Mouse Set Trade Mark: XINMENG Model No.: K670+M212 Family Model: K618+M222,K620+M212,K616+M222, K801+M217,K620+M298,K811+M217, K802+M211,K912+M212,K913+M215, K968+M215 Report No.: S21022502902001 Issue Date: 24 Mar. 2021 Prepared for Shenzhen Fucaixin Electronics Co., Ltd. Building D, no. 21, Nanpu Road, ShaJing Street, Bao 'an district, Shenzhen China Prepared by Shenzhen NTEK Testing Technology Co., Ltd. 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Bao’an District, Shenzhen 518126 P.R. China Tel:400-800-6106,0755-2320 0050 / 2320 0090 Website:http://www.ntek.org.cn Report No.: S21022502902001 Version.1.3 Page 2 of 47 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ...................................................................................................................... 3 2 SUMMARY OF TEST RESULTS ......................................................................................................................... 4 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 5 3.1 FACILITIES..................................................................................................................................................... 5 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ................................................................................. 5 3.3 MEASUREMENT UNCERTAINTY ............................................................................................................... 5 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 6 5 DESCRIPTION OF TEST MODES ..................................................................................................................... 8 6 SETUP OF EQUIPMENT UNDER TEST ........................................................................................................... 9 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ....................................................................... 9 6.2 SUPPORT EQUIPMENT ............................................................................................................................... 10 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS .............................................................................................. 11 7 TEST REQUIREMENTS .................................................................................................................................... 13 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 13 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 16 7.3 6DB BANDWIDTH ....................................................................................................................................... 25 7.4 DUTY CYCLE ............................................................................................................................................... 26 7.5 PEAK OUTPUT POWER .............................................................................................................................. 28 7.6 POWER SPECTRAL DENSITY ................................................................................................................... 29 7.7 CONDUCTED BAND EDGE MEASUREMENT......................................................................................... 31 7.8 SPURIOUS RF CONDUCTED EMISSIONS ................................................................................................ 32 7.9 ANTENNA APPLICATION .......................................................................................................................... 33 8 TEST RESULTS ................................................................................................................................................... 34 8.1 MAXIMUM CONDUCTED OUTPUT POWER ........................................................................................... 34 8.2 OCCUPIED CHANNEL BANDWIDTH ....................................................................................................... 36 8.3 MAXIMUM POWER SPECTRAL DENSITY LEVEL ................................................................................. 40 8.4 BAND EDGE ................................................................................................................................................. 42 8.5 CONDUCTED RF SPURIOUS EMISSION .................................................................................................. 44 Report No.: S21022502902001 Version.1.3 Page 3 of 47 1 TEST RESULT CERTIFICATION Applicant’s name ......................... : Shenzhen Fucaixin Electronics Co., Ltd. Address ....................................... : Building D, no. 21, Nanpu Road, ShaJing Street, Bao 'an district, Shenzhen China Manufacturer's Name .................. : Shenzhen Fucaixin Electronics Co., Ltd. Address ....................................... : Building D, no. 21, Nanpu Road, ShaJing Street, Bao 'an district, Shenzhen China Product description Product name .............................. : Wireless Rechargeable keyboard & Mouse Set Model and/or type reference ..... : K670+M212 Family Model ............................... : K618+M222,K620+M212,K616+M222,K801+M217,K620+M298, K811+M217,K802+M211,K912+M212,K913+M215,K968+M215 Measurement Procedure Used: APPLICABLE STANDARDS APPLICABLE STANDARD/ TEST PROCEDURE TEST RESULT FCC 47 CFR Part 2, Subpart J FCC 47 CFR Part 15, Subpart C ANSI C63.10-2013 KDB 558074 D01 15.247 Meas Guidance v05r02 Complied This device described above has been tested by Shenzhen NTEK Testing Technology Co., Ltd., and the tes…

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FCC ID: 2AYDP-K670 Radiated Measurement Photos FCC ID: 2AYDP-K670 Conducted Measurement Photos