2AFHL-COMMS3M Pro-Comms Wireless Gel Electronic Hearing Protector

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 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. I This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions: CAN ICES-3 (B)/NMB-3(B) 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 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. This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). CAN ICES-3 (B)/NMB-3(B) to comply with the limits for a Class B digitalto comply with the limits for a Class B digitalto comply with the limits for a Class B digital These limits are designed to provide reasonable These limits are designed to provide reasonableThese limits are designed to provide reasonable llh installation. This equipment generates, uses installation. This equipment generates, usesinstallation. This equipment generates, uses not installed and used in accordance with the not installed and used in accordance with thenot installed and used in accordance with the radio communications.However, there is noradio communications.However, there is noradio communications.However, there is no llf hd installation. If this equipment does cause installation. If this equipment does causeinstallation. If this equipment does cause , which can be determined by turning the yg , which can be determined by turning the, which can be determined by turning the ff try to correct the interference by one or more of try to correct the interference by one or more oftry to correct the interference by one or more of --- -Increase the separation between the equipment and receiver. -Increase the separation between the equipment and receiver. -Increase the separation between the equipment and receiver.-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. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. lp. lp.lp.- Consult the dealer or an experienced radio/TV technician for hel p - Consult the dealer or an experienced radio/TV technician for hel- Consult the dealer or an experienced radio/TV technician for hel NOTE: This equipment has been tested and found NOTE: This equipment has been tested and found device, pursuant to Part 15 of the FCC Rules. p device, pursuant to Part 15 of the FCC Rules. device, pursuant to Part 15 of the FCC Rules. protection against harmful interference in a residential pg protection against harmful interference in a residential protection against harmful interference in a residential and can radiate radio frequency energy and, if qy gy and can radiate radio frequency energy and, if and can radiate radio frequency energy and, if instructions, may cause harmful interference to y instructions, may cause harmful interference to instructions, may cause harmful interference to guarantee that interference will not occur in a particular gp guarantee that interference will not occur in a particular guarantee that interference will not occur in a particular harmful interference to radio or television reception, p harmful interference to radio or television reception,harmful interference to radio or television reception, equipment off and on, the user is encouraged to qpg equipment off and on, the user is encouraged to equipment off and on, the user is encouraged to f the following measures: the following measures:the following measures: l- Reorient or relocat- Reorient or relocath te the receiving antenna. te the receiving antenna.te the receiving antenna. Hereby, 3M declares that the radio equipment type3M Pro-Prot…

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L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes 1L’appareil ne doit pas produire de brouillage; 2L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.

3M CONSTRUCTION & HOME IMPROVEMENT MARKETS DIVISION 2021-1-20 Federal Communications Commission 445 12 th Street SW Washington, DC 20554 Subject: Limited Agency Agreement 3M CONSTRUCTION & HOME IMPROVEMENT MARKETS DIVISION FCC ID: 2AFHL-COMMS To Whom It May Concern: We, 3M CONSTRUCTION & HOME IMPROVEMENT MARKETS DIVISION, hereby authorized Intertek Testing Services to act as our Agent for the purpose of preparing application for FCC ID number 2AFHL-COMMS under all applicable parts of the FCC rules and regulations. The effective date of this limited agency agreement is 2021-1-20. The Limited Agency Agreement expires on 2022-1-20, unless sooner terminated or extended by written notice to Intertek Testing Services and the Federal Communications Commission. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. The applicant is not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 U.S.C. 862, and no party to the application is subject to a denial of federal benefits pursuant to that section. If you have any questions or comments, please do not hesitate to contact me. Sincerely, DOUGLAS FLETCHER Advanced Product Development specialist

External Photo External Photo External Photo External Photo

The label is under the battery Size: 24.6*43.0mm The part of green printed by product line. MODEL: Pro-Comms 90546-SIOC IC: 20514-COMMS FCC ID: 2AFHL-COMMS Made in China St.Paul, MN USA Post code: 55144-1000 39.5 mm 9.7 mm

Internal Photos Bluetooth Antenna

INTERTEK TESTING SERVICES RF Exposure The equipment under test (EUT) is a 3M Pro-Comms Wireless Gel Electronic Hearing Protector with Bluetooth function operating in 2402-2480MHz. The Bluetooth transmitter will be disabled while the EUT connect to the Aux in cable. The EUT is powered by DC 3V from 1.5V*2 “AA” Batteries. For more detail information pls. refer to the user manual. Modulation Type: GFSK, π/4-DQPSK and 8-DPSK Bluetooth Version: 5.0 (Dual Mode) Antenna Type: Integral antenna. Antenna Gain: 0dBi Max The nominal conducted output power specified: 3.0 dBm (+/-3dB). The nominal radiated output power (e.i.r.p) specified: 3.0 dBm (+/- 3dB). According to the KDB 447498: The maximun peak radiated emission for the EUT is 100.4dBμV/m at 3m in the frequency 2480MHz (EDR mode) The EIRP = [(FS*D) ^2 / 30] mW = 5.17dBm which is within the production variation. The minimum peak radiated emission for the EUT is 95.7dBμV/m at 3m in the frequency 2441MHz (EDR mode) The EIRP = [(FS*D) ^2 / 30] mW = 0.47dBm which is within the production variation. The maximun conducted output power specified is 6 dBm =4 mW The source- based time-averaging conducted output power = 4 * Duty factor mW (where Duty Factor ≤1) = 4 mW The SAR Exclusion Threshold Level: = 3.0 * (min. test separation distance, mm) / sqrt(freq. in GHz) = 3.0 * 5 / sqrt (2.480) mW = 9.53 mW Since the source-based time-averaging conducted output power is well below the SAR low threshold level, so the EUT is considered to comply with SAR requirement without testing. FCC ID: 2AFHL-COMMS

3M Construction & Home Improvement Markets Division TEST REPORT SCOPE OF WORK FCC TESTING–PRO-COMMS 90546-SIOC REPORT NUMBER 201218092SZN-001 ISSUE DATE [REVISED DATE] January 27, 2021 [---------------------] PAGES 23 DOCUMENT CONTROL NUMBER FCC ID 249_C © 2017 INTERTEK Intertek Report No.: 201218092SZN-001 This report is for the exclusive use of Intertek's Client and is provided pursuant to the agreement between Intertek and its Client. Intertek's responsibility and liability are limited to the terms and conditions of the agreement. Intertek assumes no liability to any party, other than to the Client in accordance with the agreement, for any loss, expense or damage occasioned by the use of this report. Only the Client is authorized to permit copying or distribution of this report and then only in its entirety. Any use of the Intertek name or one of its marks for the sale or advertisement of the tested material, product or service must first be approved in writing by Intertek. The observations and test results in this report are relevant only to the sample tested. This report by itself does not imply that the material, product, or service is or has ever been under an Intertek certification program. Intertek Testing Services Shenzhen Ltd. Longhua Branch 101, 201, Building B, No. 308 Wuhe Avenue, Zhangkengjing Community, GuanHu Subdistrict, LongHua District, ShenZhen, P.R. China Tel: (86 755) 8601 6288 Fax: (86 755) 8601 6751 Version: 01-November-2017 Page: 1 of 23 FCC ID 249_C Test Report 3M Construction & Home Improvement Markets Division Application For Certification FCC ID: 2AFHL-COMMS 3M Pro-Comms Wireless Gel Electronic Hearing Protector Model: Pro-Comms 90546-SIOC Brand Name: 3M 2.4GHz Transceiver Report No.: 201218092SZN-001 We hereby certify that the sample of the above item is considered to comply with the requirements of FCC Part 15, Subpart C for Intentional Radiator, mention 47 CFR [10-1-19] Prepared and Checked by: Approved by: Jeff Liang Engineer Kidd Yang Technical Supervisor Date: January 27, 2021 Intertek Report No.: 201218092SZN-001 Version: 01-November-2017 Page: 2 of 23 FCC ID 249_C Test Report MEASUREMENT/TECHNICAL REPORT This report concerns (check one:) Original Grant X Class II Change Equipment Type: DXX - Part 15 Low Power Communication Device Transmitter Deferred grant requested per 47 CFR 0.457(d)(1)(ii)? Yes No X If yes, defer until: date Company Name agrees to notify the Commission by: date of the intended date of announcement of the product so that the grant can be issued on that date. Transition Rules Request per 15.37? Yes No X If no, assumed Part 15, Subpart C for intentional radiator − the new 47 CFR [10-1-19 Edition] provision. Report prepared by: Jeff Liang Intertek Testing Services Shenzhen Ltd. Longhua Branch 101, 201, Building B, No. 308 Wuhe Avenue, Zhangkengjing Community, GuanHu Subdistrict, LongHua District, ShenZhen, P.R. China Tel / Fax: 86-755-8614 0743/86-755-8601 6680 Intertek Report No.: 201218092SZN-001 Version: 01-November-2017 Page: 3 of 23 FCC ID 249_C Test Report Table of Contents 1.0 Summary of Test Result ................................................................................................. 4 2.0 General Description ...................................................................................................... 5 2.1 Product Description .................................................................................................... 5 2.3 Test Methodology ...................................................................................................... 5 2.4 Test Facility ............................................................................................................... 5 3.0 System Test Configuration ............................................................................................. 6 3.1 Justification ............................................................................................................... 6 3.2 EUT Exercising Software .............................................................................................. 6 3.3 Special Accessories ..................................................................................................... 6 3.4 Equipment Modification .............................................................................................. 6 3.5 Measurement Uncertainty .......................................................................................... 7 3.6 Support Equipment List and Description ........................................................................ 7 4.0 Emission Results ........................................................................................................... 8 4.1 Radiated Test Results .................................................................................................. 8 4.1.1 Field Strength Calculation ......................................................................................... 8 4.1.2 Radiated Emission Configuration Photograph .............................................................. 9 4.1.3 Radiated Emissions .................................................................................................. 9 4.1.4 Transmitter Spurious Emissions ............................................................................... 12 5.0 Equipment Photographs .............................................................................................. 16 6.0 Product Labelling ........................................................................................................ 16 7.0 Technical Specifications ............................................................................................... 16 8.0 Instruction Manual ..................................................................................................... 16 9.0 Miscellaneous Information .......................................................................................... 17 9.1 Bandedge Plot .…

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3M Construction & Home Improvement Markets Division TEST REPORT SCOPE OF WORK FCC TESTING–Pro-Comms 90546-SIOC REPORT NUMBER 201218092SZN-002 ISSUE DATE [REVISED DATE] 13 May 2021 [--------------------] PAGES 23 DOCUMENT CONTROL NUMBER FCC ID 249_C © 2017 INTERTEK Test Report Intertek Report No.: 201218092SZN-002 This report is for the exclusive use of Intertek's Client and is provided pursuant to the agreement between Intertek and its Client. Intertek's responsibility and liability are limited to the terms and conditions of the agreement. Intertek assumes no liability to any party, other than to the Client in accordance with the agreement, for any loss, expense or damage occasioned by the use of this report. Only the Client is authorized to permit copying or distribution of this report and then only in its entirety. Any use of the Intertek name or one of its marks for the sale or advertisement of the tested material, product or service must first be approved in writing by Intertek. The observations and test results in this report are relevant only to the sample tested. This report by itself does not imply that the material, product, or service is or has ever been under an Intertek certification program. Intertek Testing Services Shenzhen Ltd. Longhua Branch 101, 201, Building B, No. 308 Wuhe Avenue, Zhangkengjing Community, GuanHu Subdistrict, LongHua District, ShenZhen, P.R. China Tel: (86 755) 8601 6288 Fax: (86 755) 8601 6751 Version: 01-November-2017 Page: 1 of 23 FCC ID 249_C 3M Construction & Home Improvement Markets Division Application For Certification FCC ID: 2AFHL-COMMS 3M Pro-Comms Wireless Gel Electronic Hearing Protector Model: Pro-Comms 90546-SIOC Brand Name: 3M 2.4GHz Transceiver Report No.: 201218092SZN-002 We hereby certify that the sample of the above item is considered to comply with the requirements of FCC Part 15, Subpart C for Intentional Radiator, mention 47 CFR [10-1-19] Prepared and Checked by: Approved by: Jeff Liang Engineer Kidd Yang Technical Supervisor Date: 13 May 2021 Test Report Intertek Report No.: 201218092SZN-002 Version: 01-November-2017 Page: 2 of 23 FCC ID 249_C MEASUREMENT/TECHNICAL REPORT This report concerns (check one:) Original Grant X Class II Change Equipment Type: DXX - Part 15 Low Power Communication Device Transmitter Deferred grant requested per 47 CFR 0.457(d)(1)(ii)? Yes No X If yes, defer until: date Company Name agrees to notify the Commission by: date of the intended date of announcement of the product so that the grant can be issued on that date. Transition Rules Request per 15.37? Yes No X If no, assumed Part 15, Subpart C for intentional radiator − the new 47 CFR [10-1-19 Edition] provision. Report prepared by: Jeff Liang Intertek Testing Services Shenzhen Ltd. Longhua Branch 101, 201, Building B, No. 308 Wuhe Avenue, Zhangkengjing Community, GuanHu Subdistrict, LongHua District, ShenZhen, P.R. China Tel / Fax: 86-755-8614 0743/86-755-8601 6661 Test Report Intertek Report No.: 201218092SZN-002 Version: 01-November-2017 Page: 3 of 23 FCC ID 249_C Table of Contents 1.0 Summary of Test Result ................................................................................................. 4 2.0 General Description ....................................................................................................... 5 2.1 Product Description ............................................................................................................. 5 2.2 Related Submittal(s) Grants ................................................................................................. 5 2.3 Test Methodology ................................................................................................................ 5 2.4 Test Facility .......................................................................................................................... 5 3.0 System Test Configuration ............................................................................................. 6 3.1 Justification .......................................................................................................................... 6 3.2 EUT Exercising Software ...................................................................................................... 6 3.3 Special Accessories .............................................................................................................. 6 3.4 Equipment Modification ...................................................................................................... 6 3.5 Measurement Uncertainty .................................................................................................. 6 3.6 Support Equipment List and Description ............................................................................. 7 4.0 Emission Results ............................................................................................................ 8 4.1 Radiated Test Results ........................................................................................................... 8 4.1.1 Field Strength Calculation ................................................................................................ 8 4.1.2 Radiated Emission Configuration Photograph ................................................................ 9 4.1.3 Radiated Emissions .......................................................................................................... 9 4.1.4 Transmitter Spurious Emissions (Radiated) ................................................................... 12 5.0 Equipment Photographs ............................................................................................... 16 6.0 Product Labelling .......................................................................................................... 16 7.0 Technical Specifications ................................................................................................ 16 8.0 Instruction Manual .................…

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Radiated photos Below 1GHz The EUT is placed at the center of turntable The EUT is placed at the center of turntable Above 1GHz