2AJKI-ISINBTHearing Protection

(Honeywell Safety Products USA, Inc.) Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: June 22, 2021 SUBJECT: FCC Application for FCC ID: 2AJKI -ISINBT To Whom It May Concern: We, the undersigned, hereby authorize Tony Wei at EMTEK(NINGBO) CO., LTD. on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by EMTEK(NINGBO) CO., LTD. on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, John Jenkins /Engineering Manager Honeywell Safety Products USA, Inc.

(Honeywell Safety Products USA, Inc.) Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AJKI -ISINBT Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name Block Diagram, Schematics, Operational Description Block Diagram .pdf, Schematics .pdf , Operation Description .pdf The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below: Short-term confidentiality requested: 180 days Exhibit Type File Name Internal Photos, Test Setup Photos, Manual, External Photos Internal Photos .pdf, Test Setup Photos .pdf, User Manual .pdf, External Photos.pdf Sincerely, John Jenkins /Engineering Manager Honeywell Safety Products USA, Inc.

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FCC ID: 2AJKI-ISINBT Portable device According to §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. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g 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； The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. We use 5mm as separation distance to calculate. Maximum measured transmitter power: Transmit Frequency (GHz) Mode Max Conducted Power (dBm) tune up maximum power(dBm) Result calculation 1-g SAR 2.402 GFSK -1.539 -1 0.25 3 2.441 GFSK -1.816 -1 0.25 3 2.480 GFSK -2.096 -1 0.25 3 2.402 PI/4 DQPSK -1.008 0 0.31 3 2.441 PI/4 DQPSK -1.291 0 0.31 3 2.480 PI/4 DQPSK -1.584 0 0.31 3 2.402 8DPSK -0.745 1 0.39 3 2.441 8DPSK -1.111 0 0.31 3 2.480 8DPSK -1.424 0 0.31 3 Conclusion: For the max result : 0.39≤ 3.0 for 1-g SAR extremity SAR, No SAR is required.

Report No. EN210531036W Page 1 of 60 Ver.1.0 TEST REPORT $二维码$ Product Name : Hearing Protection Model Number : RWS-53038 FCC ID : 2AJKI-ISINBT Prepared for : Honeywell Safety Products USA, Inc. Address : 7828 Waterville Road, San Diego, California, United States, 92154 Prepared by : EMTEK (NINGBO) CO., LTD. Address : 1F Building 4, 1177#, Lingyun Road, Ningbo National Hi-Tech Zone, Ningbo, Zhejiang, China. Tel: +86-574-27907998 Fax: +86-574-27721538 Report Number : EN210531036W Date(s) of Tests : May 31, 2021 to June 23, 2021 Date of issue : June 24, 2021 Report No. EN210531036W Page 2 of 60 Ver.1.0 Table of Contents 1 TEST RESULT CERTIFICATION ............................................................................................................ 3 2 EUT TECHNICAL DESCRIPTION .......................................................................................................... 4 3 SUMMARY OF TEST RESULT ............................................................................................................... 5 4 TEST METHODOLOGY .......................................................................................................................... 6 4.1 GENERAL DESCRIPTION OF APPLIED STANDARDS ....................................................................... 6 4.2 MEASUREMENT EQUIPMENT USED .................................................................................................. 6 4.3 DESCRIPTION OF TEST MODES ........................................................................................................ 7 5 FACILITIES AND ACCREDITATIONS ................................................................................................... 8 5.1 FACILITIES ............................................................................................................................................ 8 5.2 LABORATORY ACCREDITATIONS AND LISTINGS ............................................................................. 8 6 TEST SYSTEM UNCERTAINTY ............................................................................................................. 9 7 SETUP OF EQUIPMENT UNDER TEST ............................................................................................... 10 7.1 RADIO FREQUENCY TEST SETUP 1 ................................................................................................ 10 7.2 RADIO FREQUENCY TEST SETUP 2 ................................................................................................ 10 7.3 CONDUCTED EMISSION TEST SETUP ............................................................................................ 11 7.4 SUPPORT EQUIPMENT ..................................................................................................................... 12 8 FREQUENCY HOPPING SYSTEM REQUIREMENTS ......................................................................... 13 8.1 STANDARD APPLICABLE .......................................................................................................................... 13 8.2 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE ........................................................................ 13 8.3 EQUAL HOPPING FREQUENCY USE ......................................................................................................... 14 8.4 FREQUENCY HOPPING SYSTEM .............................................................................................................. 14 9 TEST REQUIREMENTS ........................................................................................................................ 15 9.1 20DB BANDWIDTH ............................................................................................................................. 15 9.2 CARRIER FREQUENCY SEPARATION ............................................................................................. 21 9.3 NUMBER OF HOPPING FREQUENCIES ........................................................................................... 27 9.4 AVERAGE TIME OF OCCUPANCY (DWELL TIME) ............................................................................ 29 9.5 MAXIMUM PEAK CONDUCTED OUTPUT POWER ........................................................................... 32 9.6 CONDUCTED SUPRIOUS EMISSION ............................................................................................... 38 9.7 RADIATED SPURIOUS EMISSION ..................................................................................................... 45 9.8 CONDUCTED EMISSION TEST ......................................................................................................... 58 9.9 ANTENNA APPLICATION ................................................................................................................... 59 Report No. EN210531036W Page 3 of 60 Ver.1.0 1 TEST RESULT CERTIFICATION Applicant : Honeywell Safety Products USA, Inc. Address : 7828 Waterville Road, San Diego, California, United States, 92154 Manufacturer : NINGBO HONGSHUO ELECTRONICS & APPLIANCE CO., LTD Address : ZHANGQI INDUSTRY ZONE, CIXI NINGBO, ZHEJIANG, CHINA EUT : Hearing Protection Model Name : RWS-53038 Trademark : Howard Leight Measurement Procedure Used: APPLICABLE STANDARDS STANDARD TEST RESULT FCC 47 CFR Part 2, Subpart J FCC 47 CFR Part 15, Subpart C PASS The above equipment was tested by EMTEK(SHENZHEN) CO., LTD.The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.10 (2014) and the energy emitted by the sample EUT tested as described in this report is in compliance with the requirements of FCC Rules Part 2 and Part 15.247. The test results of this report relate only to the tested sample identified in this report. Date of Test : May 31, 2021 to June 23, 2021 Prepared by : June Gao/Engineer Reviewer : Vinay/Supervisor Approved & Authorized Signer : Tony Wei/Manager Report No. EN210531036W Page 4 …

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