2AI28-AESEM1SSituational Awareness Earmuffs

Situational Awareness Bluetooth ® Earmuffs INSTRUCTION MANUAL FRANÇAIS pg. 21 ESPAÑOL pg. 11 ENGLISH • NEED FEATURES • NEED FEATURES • NEED FEATURES • NEED FEATURES • NEED FEATURES • NEED FEATURES • NEED FEATURES • NEED FEATURES AESEM1S FPOFPO 2 GENERAL SPECIFICATIONS Klein Tools Situational Awareness Bluetooth Earmuffs enable users to remain cognizant of their surrounding environment while expertly incorporated Bluetooth technology lets the user enjoy music simultaneously without compromising the user's hearing protection of up to 21dB NRR. The vented headband design and soft- foam ear cushions allow for a cool comfortable fit. • Hearing Protection: 21dB NRR (Noise Reduction Rating) • Wireless Compatibility: Devices with Bluetooth ® Version 5.0 • Wireless Connection Range: 32.8 ft. (10 m) in open space • Frequency Response: 20Hz - 20kHz • Maximum Bluetooth Volume : 92 dBA • Support Profiles: A2DP v1.3/AVRCP v1.6/HFP v1.7/HSP1.2/GAVDP1.3 • Battery Type: Internal, Li-Ion, 3.7V / 500mAh (1.85Wh) • Runtime: Approx. 22 hours @ 100% Ambient & 100% Bluetooth Volume • Charging Requirements: Maximum 5V DC, Minimum 0.6A • Charging Time: Approx. 2 hours • Dimensions: 6.18" × 7.03" × 3.90" (156.9 × 178.5 × 99 mm) • Weight: 15.38 oz. (436 g) • Operating Temperature: 14° to 140F (-10° to 60°C) • Charging Temperature: 32° to 113°F (0° to 45°C) • Storage Temperature: -4° to 140°F (-20° to 60°C) • Relative Humidity: <85% non-condensing • Drop Protection: 6.6' (2 m) • Ingress Protection (IP) Rating: IPX4 Dust & Water Resistant • Certifications: FCC, IC, DOE/CEC, NrCan, NOM-IFETEL • FCC ID: 2AI28-AESEM1S • IC: 21655-AESEM1S • IFETEL: ??? Specifications subject to change. ENGLISH The Bluetooth ® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Klein Tools, Inc. is under license. 3 WARNINGS Read, understand, and follow these instructions to ensure safe operation. Keep these instructions for future reference. These hearing protectors help reduce exposure to hazardous noise and other loud sounds. Misuse or failure to wear hearing protection at all times that you are exposed to noise may result in hearing loss or injury. • Inspect earmuffs before each use; damage to the earmuffs can reduce noise reduction performance. • Improper fit of this device will reduce its effectiveness in attenuating noise. Consult the FITTING EARMUFFS section for best protection. • Do not bend or reshape the headband as this will cause a reduced clamping force reducing the specified NRR (Noise Reduction Rating). • Prolonged exposure to high volumes can cause hearing damage. It is the responsibility of the user to set the audio input level to the recommended volume. See table in FEATURE DETAILS section for noise exposure levels. • DO NOT use this product in situations that require special attention: using noise reduction equipment and listening to audio can reduce awareness of the surrounding environment. Failure to observe these warnings can result in risk of fire or electric shock. • DO NOT use the product if it is damaged or modified. Damaged or modified batteries may exhibit unpredictable behavior resulting in fire, explosion, or injury. • Risk of fire and burns. DO NOT open, crush, heat above specified maximum temperature or incinerate. Prolonged exposure to direct sunlight can result in elevated temperatures • DO NOT immerse in water or other liquids • Properly seal the charging port cover to achieve specified water & foreign object ingress protection. Keep seal free of dirt, oil, sand, or other material that interferes with proper sealing. Failure to do so can result in risk of fire or electric shock. • DO NOT open the charging port cover if wet or in a wet environment. Thoroughly dry the unit and the seal around water-resistant cover completely before opening water resistant cover. • DO NOT subject to impacts or drops greater than 6.6ft. (2m). Drops larger than this may not show signs of damage, but internal components may have been compromised. It is advisable to replace the unit if any such severe events occur • DO NOT attempt to repair the product or charging cable. There are no user-serviceable parts. 4 ENGLISH FEATURE DETAILS 1. Bluetooth Volume Knob 2. Ambient Volume Knob 3. Omni-Directional Microphone 4. Multi-Function Button (MFB) 5. Bluetooth Microphones 6. Silicone Port Cover 7. USB-C Charging Port 8. Indicator LED 9. USB-A to USB-C Charging Cable 10. Carrying Bag 1 2 4 3 6 55 7 8 9 NOISE EXPOSURE VALUES EXPOSURE TIME EXPOSURE LEVEL PER NIOSH RECOMMENDED EXPOSURE LIMIT EXPOSURE LEVEL PER OSHA PERMISSIBLE EXPOSURE LIMIT 8 hours85 dBA90 dBA 4 hours88 dBA95 dBA 2 hours91 dBA100 dBA 1 hour94 dBA105 dBA 30 minutes97 dBA110 dBA 15 minutes100 dBA115 dBA See www.cdc.gov/niosh/topics/noise/ reducenoiseexposure for more details. FPOFPO SYMBOLS ON PRODUCT Warning or Caution Risk of Electrical Shock Read Instructions FCC: Conforms with particular Code of Federal Regulations Bluetooth ® SIG Certified FPOFPO 10 5 NOISE REDUCTION RATING (NRR) The NRR for the AESEM1S Situational Awareness Bluetooth Earmuffs is 21dB. It is tested and in accordance with ANSI S3.19-1974. To ensure adequate hearing protection, the earmuffs must be properly fitted according to the FITTING EARMUFFS section. ANSI S3.19-1974 TESTING Frequency (Hz)125250500100020003150400063008000NRR Mean Attenuation34.331.736.135.337.740.441.046.345.8 21 Standard Deviation3.93.03.33.63.94.33.64.12.8 NOTE: The above table is based on a headband force of 12N. The level of noise entering a person’s ear when the hearing protector is worn as directed, is closely approximated by the difference between the A-Weighted environmental noise level and the Noise Reduction Rating (NRR). EXAMPLE: • The environmental noise level as measured at the ear is 89dB(A). • The NRR is 21dB. • The level of noise entering the ear is approximately equal to 68dB(A). CAUTION: For noisy environments dominated by frequencies below 500 Hz, the C-weighte…

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Rev 11/20/07 Klein Tools Inc. Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AI28-AESEM1S 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, Operational 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: Exhibit Type File Name / / Sincerely, Signature: printed name: Russ Goldmann Date: December 13, 2022 DocuSign Envelope ID: B5D061D4-17FB-4E4C-9F43-3214157717C4 . .

C:\ProgramData\activePDF\Temp\DocConverter\API\Input\$571913ca2bf0$FFA82191443449E68A1C3001C6AA0F72.docx Klein Tools Inc. Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: December 13, 2022 SUBJECT: FCC Application for (FCC ID: 2AI28-AESEM1S) To Whom It May Concern: We, the undersigned, hereby authorize Mina Xu at Centre Testing International Group Co., Ltd / Building C, Hongwei Industrial Park Block 70, Bao'an District, Shenzhen, China on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Mina Xu at Centre Testing International Group Co., Ltd / Building C, Hongwei Industrial Park Block 70, Bao'an District, Shenzhen, China 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, Signature: printed name: Russ Goldmann DocuSign Envelope ID: B5D061D4-17FB-4E4C-9F43-3214157717C4

Klein Tools Inc. Federal Communications Commission Date: 2022-12-13 Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 SUBJECT: FCC SDoC declaration for FCC ID: 2AI28-AESEM1S To Whom it may concern, We, as the grantee of this project, would like to declare that this device has been tested according to the FCC requirement and found compliant with the following standards: FCC Part 15 Subpart B. Sincerely, Signature: ________________________________ Product Name : Situational Awareness Earmuffs Brand Name : Klein Tools Model Name : AESEM1S Testing Lab : Centre Testing International Group Co., Ltd Company Name : Klein Tools Inc. Name : Russ Goldmann Job Title : Director, Product Design and Development E-mail : [email protected] Tel. : 847-821-3305 DocuSign Envelope ID: B5D061D4-17FB-4E4C-9F43-3214157717C4

ReportNo.:EED32O81825501Page 47 of 53 8 PHOTOGRAPHSOFEUTConstructionalDetails TestModelNo.:AESEM1S ViewofProduct-1 ViewofProduct-2 ReportNo.:EED32O81825501Page 48 of 53 ViewofProduct-3 ViewofProduct-4 ReportNo.:EED32O81825501Page 49 of 53 ViewofProduct-5 ViewofProduct-6 ReportNo.:EED32O81825501Page 50 of 53 ViewofProduct-7 ViewofProduct-8

Klein Tools EarmuffsAESEM1SPGD TITLE QTY/SET: 1 DRAWN BY UNIT:mm A4 APPR. BY MATERIAL: ChenLin ChenLin 2022-10-20 Part No: Drawing No: Steven Rev. Desciption Appr. 1.0 R(top) R(bottom) L(top) L(bottom) INPUT: 5V 600mA BATTERY CAPACITY: 500mAh(1.85Wh) FCC ID: 2AI28-AESEM1S IC: 21655-AESEM1S IFETEL: XXXXXXXXXXXXXX MMYYF-A1 Laser Engraved Molded In Recessed w/Mirror Finishblack part) Molded In Recessed w/Mirror Finish Molded In Recessed w/Mirror Finish L(bottom)labellocationR(bottom)labellocation R(top)labellocation L(top)labellocation

ReportNo.:EED32O81825501Page 51 of 53 ViewofProduct-9 ViewofProduct-10 ReportNo.:EED32O81825501Page 52 of 53 ViewofProduct-11 ViewofProduct-12 ReportNo.:EED32O81825501Page 53 of 53 ViewofProduct-13 ViewofProduct-14 Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthis reportreferonlytothesample(s)tested.WithoutwrittenapprovalofCTI,thisreportcan’tbereproduced exceptinfull. ***EndofReport***

ReportNumber:EED32O81825502 AppendixA:SARSystemperformanceCheckPlots Tableofcontents SystemPerformanceCheck-D2450

ReportNumber:EED32O81825502 AppendixB:SARMeasurementresultsPlots Tableofcontents Bluetooth-Head Bluetooth-Body

ReportNumber:EED32O81825502 AppendixC:Calibrationreports Tableofcontents ProbeEX3DV4SN:7328 DAE4SN:1458 DipoleD2450V2SN:959

Impedance and Return Loss Test-Head (2022.1.10)

致力于为客户提供专业级天线解决方案 Test Report for headset Antenna RF：Ke Hong Chen Date：2022-12-15 Cnotact：19925137130 致力于为客户提供专业级天线解决方案 1 Brief for test Version outline for the Report Data for the positive Antenna 2 4 5 Test environment 致力于为客户提供专业级天线解决方案 Brief for test Model Headset PCB Main Board Frequency Band and Material type Main Antenna Frequency Band Material Type BluetoothOTA Test requirements By customer requirements 致力于为客户提供专业级天线解决方案 Antenna Positive Data Channel No. Free space test data TRP (dBm)TIS (dBm) 0 5.23-90.99 39 4.44-90.37 78 4.43-90.20 Channel No. Head/eartest data TRP (dBm)TIS (dBm) 0 4.19-89.14 39 3.67-88.70 78 3.85-88.74 致力于为客户提供专业级天线解决方案 Antenna Passive Data Freq(2.4G)Effi(%)gain（dbi） 2400MHZ44.4-1.8 2410MHZ44.7-1.6 2420MHZ45.3-1.7 2430MHZ46.8-1.6 2440MHZ46.2-1.5 2450MHZ44.1-1.6 2460MHZ40.6-1.5 2470MHZ36.0-1.7 2480MHZ38.2-1.8 2490MHZ39.9-2.0 2500MHZ37.8-1.9 致力于为客户提供专业级天线解决方案 Antenna Apple Graph 致力于为客户提供专业级天线解决方案 Petal diagram （2450Mhz） 致力于为客户提供专业级天线解决方案 Test Setup 致力于为客户提供专业级天线解决方案 CMW500 致力于为客户提供专业级天线解决方案 E5071B

ReportNo.:EED22O81825501Page1of96 Appendix:BluetoothClassic ReportNo.:EED22O81825501Page2of96 Contents Contents..............................................................................................................................................................2 DutyCycle...........................................................................................................................................................3 DwellTime........................................................................................................................................................18 MaximumPeakConductedOutputPower.......................................................................................................46 -20dBBandwidth...............................................................................................................................................52 OccupiedChannelBandwidth..........................................................................................................................58 CarrierFrequenciesSeparation.......................................................................................................................64 BandEdge........................................................................................................................................................70 BandEdge(Hopping)........................................................................................................................................77 ConductedRFSpuriousEmission....................................................................................................................84 NumberofHoppingChannel............................................................................................................................94 ReportNo.:EED22O81825501Page3of96 DutyCycle ConditionModeFrequency(MHz)AntennaDutyCycle(%)CorrectionFactor(dB)1/T(kHz) NVNT1-DH12402Ant131.045.082.58 NVNT1-DH12441Ant131.125.072.57 NVNT1-DH12480Ant131.045.082.58 NVNT1-DH32402Ant165.761.820.61 NVNT1-DH32441Ant165.81.820.61 NVNT1-DH32480Ant165.761.820.61 NVNT1-DH52402Ant177.121.130.35 NVNT1-DH52441Ant177.121.130.35 NVNT1-DH52480Ant177.091.130.35 NVNT2-DH12402Ant131.934.962.51 NVNT2-DH12441Ant131.934.962.51 NVNT2-DH12480Ant131.934.962.51 NVNT2-DH32402Ant165.521.840.61 NVNT2-DH32441Ant165.521.840.61 NVNT2-DH32480Ant165.521.840.61 NVNT2-DH52402Ant177.321.120.34 NVNT2-DH52441Ant177.321.120.34 NVNT2-DH52480Ant177.321.120.34 NVNT3-DH12402Ant131.095.072.57 NVNT3-DH12441Ant131.095.072.57 NVNT3-DH12480Ant131.095.072.57 NVNT3-DH32402Ant165.571.830.61 NVNT3-DH32441Ant165.571.830.61 NVNT3-DH32480Ant165.521.840.61 NVNT3-DH52402Ant177.361.110.34 NVNT3-DH52441Ant177.361.110.34 NVNT3-DH52480Ant177.321.120.34 ReportNo.:EED22O81825501Page4of96 TestGraphs DutyCycleNVNT1-DH12402MHzAnt1 DutyCycleNVNT1-DH12441MHzAnt1 ReportNo.:EED22O81825501Page5of96 DutyCycleNVNT1-DH12480MHzAnt1 DutyCycleNVNT1-DH32402MHzAnt1 ReportNo.:EED22O81825501Page6of96 DutyCycleNVNT1-DH32441MHzAnt1 DutyCycleNVNT1-DH32480MHzAnt1 ReportNo.:EED22O81825501Page7of96 DutyCycleNVNT1-DH52402MHzAnt1 DutyCycleNVNT1-DH52441MHzAnt1 ReportNo.:EED22O81825501Page8of96 DutyCycleNVNT1-DH52480MHzAnt1 DutyCycleNVNT2-DH12402MHzAnt1 ReportNo.:EED22O81825501Page9of96 DutyCycleNVNT2-DH12441MHzAnt1 DutyCycleNVNT2-DH12480MHzAnt1 ReportNo.:EED22O81825501Page10of96 DutyCycleNVNT2-DH32402MHzAnt1 DutyCycleNVNT2-DH32441MHzAnt1 ReportNo.:EED22O81825501Page11of96 DutyCycleNVNT2-DH32480MHzAnt1 DutyCycleNVNT2-DH52402MHzAnt1 ReportNo.:EED22O81825501Page12of96 DutyCycleNVNT2-DH52441MHzAnt1 DutyCycleNVNT2-DH52480MHzAnt1 ReportNo.:EED22O81825501Page13of96 DutyCycleNVNT3-DH12402MHzAnt1 DutyCycleNVNT3-DH12441MHzAnt1 ReportNo.:EED22O81825501Page14of96 DutyCycleNVNT3-DH12480MHzAnt1 DutyCycleNVNT3-DH32402MHzAnt1 ReportNo.:EED22O81825501Page15of96 DutyCycleNVNT3-DH32441MHzAnt1 DutyCycleNVNT3-DH32480MHzAnt1 ReportNo.:EED22O81825501Page16of96 DutyCycleNVNT3-DH52402MHzAnt1 DutyCycleNVNT3-DH52441MHzAnt1 ReportNo.:EED22O81825501Page17of96 DutyCycleNVNT3-DH52480MHzAnt1 ReportNo.:EED22O81825501Page18of96 DwellTime ConditionModeFrequency (MHz) AntennaPulseTime (ms) TotalDwellTime (ms) Burst Count PeriodTime (ms) Limit (ms) Verdict NVNT1-DH12402Ant10.384122.49631931600400Pass NVNT1-DH12441Ant10.369117.71131931600400Pass NVNT1-DH12480Ant10.378120.58231931600400Pass NVNT1-DH32402Ant11.64262.416031600400Pass NVNT1-DH32441Ant11.624258.21615931600400Pass NVNT1-DH32480Ant11.635259..96515931600400Pass NVNT1-DH52402Ant12.888309.01610731600400Pass NVNT1-DH52441Ant12.874307.51810731600400Pass NVNT1-DH52480Ant12.883308.48110731600400Pass NVNT2-DH12402Ant10.394126.0832031600400Pass NVNT2-DH12441Ant10.369117.71131931600400Pass NVNT2-DH12480Ant10.390124.4131931600400Pass NVNT2-DH32402Ant11.646263.3616031600400Pass NVNT2-DH32441Ant11.619259.0416031600400Pass NVNT2-DH32480Ant11.642262.7216031600400Pass NVNT2-DH52402Ant12.894309.65810731600400Pass NVNT2-DH52441Ant12.883308.48110731600400Pass NVNT2-DH52480Ant12.883308.48110731600400Pass NVNT3-DH12402Ant10.394125.68631931600400Pass NVNT3-DH12441Ant10.394125.68631931600400Pass NVNT3-DH12480Ant10.391115.15931931600400Pass NVNT3-DH32402Ant11.644263.0416031600400Pass NVNT3-DH32441Ant11.634254.90415931600400Pass NVNT3-DH32480Ant11.635261.616031600400Pass NVNT3-DH52402Ant12.895309.76510731600400Pass NVNT3-DH52441Ant12.883308.48110731600400Pass NVNT3-DH52480Ant12.883308.48110731600400Pass ReportNo.:EED22O81825501Page19of96 TestGraphs DwellNVNT1-DH12402MHzAnt1OneBurst DwellNVNT1-DH12402MHzAnt1Accumulated ReportNo.:EED22O81825501Page20of96 DwellNVNT1-DH12441MHzAnt1OneBurst DwellNVNT1-DH12441MHzAnt1Accumulated ReportNo.:EED22O81825501Page21of96 DwellNVNT1-DH12480MHzAnt1OneBurst DwellNVNT1-DH12480MHzAnt1Accumulated ReportNo.:EED22O81825501Page22of96 DwellNVNT1-DH32402MHzAnt1OneBurst DwellNVNT1-DH32402MHzAnt1Accumulated ReportNo.:EED22O81825501Page23of96 DwellNVNT1-DH32441MHzAnt1OneBurst DwellNVNT1-DH32441MHzAnt1Accumulated ReportNo.:EED22O8182…

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ReportNo.:EED22O81825501Page44of96 DwellNVNT3-DH52441MHzAnt1OneBurst DwellNVNT3-DH52441MHzAnt1Accumulated ReportNo.:EED22O81825501Page45of96 DwellNVNT3-DH52480MHzAnt1OneBurst DwellNVNT3-DH52480MHzAnt1Accumulated ReportNo.:EED22O81825501Page46of96 MaximumPeakConductedOutputPower ConditionModeFrequency (MHz) AntennaConductedPower (dBm) DutyFactor (dB) TotalPower (dBm) Limit (dBm) Verdict NVNT1-DH52402Ant17.3907.3921Pass NVNT1-DH52441Ant17.5207.5221Pass NVNT1-DH52480Ant17.6507.6521Pass NVNT2-DH52402Ant19.2209.2221Pass NVNT2-DH52441Ant19.5609.5621Pass NVNT2-DH52480Ant19.7209.7221Pass NVNT3-DH52402Ant19.8409.8421Pass NVNT3-DH52441Ant110.12010.1221Pass NVNT3-DH52480Ant110.45010.4521Pass ReportNo.:EED22O81825501Page47of96 TestGraphs PeakPowerNVNT1-DH52402MHzAnt1 PeakPowerNVNT1-DH52441MHzAnt1 ReportNo.:EED22O81825501Page48of96 PeakPowerNVNT1-DH52480MHzAnt1 PeakPowerNVNT2-DH52402MHzAnt1 ReportNo.:EED22O81825501Page49of96 PeakPowerNVNT2-DH52441MHzAnt1 PeakPowerNVNT2-DH52480MHzAnt1 ReportNo.:EED22O81825501Page50of96 PeakPowerNVNT3-DH52402MHzAnt1 PeakPowerNVNT3-DH52441MHzAnt1 ReportNo.:EED22O81825501Page51of96 PeakPowerNVNT3-DH52480MHzAnt1 ReportNo.:EED22O81825501Page52of96 -20dBBandwidth ConditionModeFrequency(MHz)Antenna-20dBBandwidth(MHz)Limit-20dBBandwidth(MHz)Verdict NVNT1-DH52402Ant10.9540Pass NVNT1-DH52441Ant10.9540Pass NVNT1-DH52480Ant10.9540Pass NVNT2-DH52402Ant11.3310Pass NVNT2-DH52441Ant11.3370Pass NVNT2-DH52480Ant11.340Pass NVNT3-DH52402Ant11.3050Pass NVNT3-DH52441Ant11.3050Pass NVNT3-DH52480Ant11.3020Pass ReportNo.:EED22O81825501Page53of96 TestGraphs -20dBBandwidthNVNT1-DH52402MHzAnt1 -20dBBandwidthNVNT1-DH52441MHzAnt1 ReportNo.:EED22O81825501Page54of96 -20dBBandwidthNVNT1-DH52480MHzAnt1 -20dBBandwidthNVNT2-DH52402MHzAnt1 ReportNo.:EED22O81825501Page55of96 -20dBBandwidthNVNT2-DH52441MHzAnt1 -20dBBandwidthNVNT2-DH52480MHzAnt1 ReportNo.:EED22O81825501Page56of96 -20dBBandwidthNVNT3-DH52402MHzAnt1 -20dBBandwidthNVNT3-DH52441MHzAnt1 ReportNo.:EED22O81825501Page57of96 -20dBBandwidthNVNT3-DH52480MHzAnt1 ReportNo.:EED22O81825501Page58of96 OccupiedChannelBandwidth ConditionModeFrequency(MHz)Antenna99%OBW(MHz) NVNT1-DH52402Ant10.873 NVNT1-DH52441Ant10.873 NVNT1-DH52480Ant10.871 NVNT2-DH52402Ant11.2 NVNT2-DH52441Ant11.2 NVNT2-DH52480Ant11.199 NVNT3-DH52402Ant11.199 NVNT3-DH52441Ant11.198 NVNT3-DH52480Ant11.195 ReportNo.:EED22O81825501Page59of96 TestGraphs OBWNVNT1-DH52402MHzAnt1 OBWNVNT1-DH52441MHzAnt1 ReportNo.:EED22O81825501Page60of96 OBWNVNT1-DH52480MHzAnt1 OBWNVNT2-DH52402MHzAnt1 ReportNo.:EED22O81825501Page61of96 OBWNVNT2-DH52441MHzAnt1 OBWNVNT2-DH52480MHzAnt1 ReportNo.:EED22O81825501Page62of96 OBWNVNT3-DH52402MHzAnt1 OBWNVNT3-DH52441MHzAnt1 ReportNo.:EED22O81825501Page63of96 OBWNVNT3-DH52480MHzAnt1 ReportNo.:EED22O81825501Page64of96 CarrierFrequenciesSeparation ConditionModeAntennaHoppingFreq1(MHz)HoppingFreq2(MHz)HFS(MHz)Limit(MHz)Verdict NVNT1-DH5Ant12402.0522402.9780.9260.636Pass NVNT1-DH5Ant12440.9862441.9720.9860.636Pass NVNT1-DH5Ant12479.0542480.1721.1180.636Pass NVNT2-DH5Ant12401.842403.0021.1620.887Pass NVNT2-DH5Ant12440.9742442.0061.0320.891Pass NVNT2-DH5Ant12478.8062479.8681.0620.893Pass NVNT3-DH5Ant124022403.1281.1280.87Pass NVNT3-DH5Ant12441.1242442.0980.9740.87Pass NVNT3-DH5Ant12478.9982480.1221.1240.868Pass ReportNo.:EED22O81825501Page65of96 TestGraphs CFSNVNT1-DH52402MHzAnt1 CFSNVNT1-DH52441MHzAnt1 ReportNo.:EED22O81825501Page66of96 CFSNVNT1-DH52480MHzAnt1 CFSNVNT2-DH52402MHzAnt1 ReportNo.:EED22O81825501Page67of96 CFSNVNT2-DH52441MHzAnt1 CFSNVNT2-DH52480MHzAnt1 ReportNo.:EED22O81825501Page68of96 CFSNVNT3-DH52402MHzAnt1 CFSNVNT3-DH52441MHzAnt1 ReportNo.:EED22O81825501Page69of96 CFSNVNT3-DH52480MHzAnt1 ReportNo.:EED22O81825501Page70of96 BandEdge ConditionModeFrequency(MHz)AntennaHoppingModeMaxValue(dBc)Limit(dBc)Verdict NVNT1-DH52402Ant1No-Hopping-51.8-20Pass NVNT1-DH52480Ant1No-Hopping-53.16-20Pass NVNT2-DH52402Ant1No-Hopping-44.53-20Pass NVNT2-DH52480Ant1No-Hopping-45.52-20Pass NVNT3-DH52402Ant1No-Hopping-46.84-20Pass NVNT3-DH52480Ant1No-Hopping-47.58-20Pass ReportNo.:EED22O81825501Page71of96 TestGraphs BandEdgeNVNT1-DH52402MHzAnt1No-HoppingRef BandEdgeNVNT1-DH52402MHzAnt1No-HoppingEmission ReportNo.:EED22O81825501Page72of96 BandEdgeNVNT1-DH52480MHzAnt1No-HoppingRef BandEdgeNVNT1-DH52480MHzAnt1No-HoppingEmission ReportNo.:EED22O81825501Page73of96 BandEdgeNVNT2-DH52402MHzAnt1No-HoppingRef BandEdgeNVNT2-DH52402MHzAnt1No-HoppingEmission ReportNo.:EED22O81825501Page74of96 BandEdgeNVNT2-DH52480MHzAnt1No-HoppingRef BandEdgeNVNT2-DH52480MHzAnt1No-HoppingEmission ReportNo.:EED22O81825501Page75of96 BandEdgeNVNT3-DH52402MHzAnt1No-HoppingRef BandEdgeNVNT3-DH52402MHzAnt1No-HoppingEmission ReportNo.:EED22O81825501Page76of96 BandEdgeNVNT3-DH52480MHzAnt1No-HoppingRef BandEdgeNVNT3-DH52480MHzAnt1No-HoppingEmission ReportNo.:EED22O81825501Page77of96 BandEdge(Hopping) ConditionModeFrequency(MHz)AntennaHoppingModeMaxValue(dBc)Limit(dBc)Verdict NVNT1-DH52402Ant1Hopping-50.47-20Pass NVNT1-DH52480Ant1Hopping-51.72-20Pass NVNT2-DH52402Ant1Hopping-50.29-20Pass NVNT2-DH52480Ant1Hopping-50.86-20Pass NVNT3-DH52402Ant1Hopping-50.29-20Pass NVNT3-DH52480Ant1Hopping-50.62-20Pass ReportNo.:EED22O81825501Page78of96 TestGraphs BandEdge(Hopping)NVNT1-DH52402MHzAnt1HoppingRef BandEdge(Hopping)NVNT1-DH52402MHzAnt1HoppingEmission ReportNo.:EED22O81825501Page79of96 BandEdge(Hopping)NVNT1-DH52480MHzAnt1HoppingRef BandEdge(Hopping)NVNT1-DH52480MHzAnt1HoppingEmission ReportNo.:EED22O81825501Page80of96 BandEdge(Hopping)NVNT2-DH52402MHzAnt1HoppingRef BandEdge(Hopping)NVNT2-DH52402MHzAnt1HoppingEmission ReportNo.:EED22O81825501Page81of96 BandEdge(Hopping)NVNT2-DH52480MHzAnt1HoppingRef BandEdge(Hopping)NVNT2-DH52480MHzAnt1HoppingEmission ReportNo.:EED22O81825501Page82of96 BandEdge(Hopping)NVNT3-DH52402MHzAnt1HoppingRef BandEdge(Hopping)NVNT3-DH52402MHzAnt1HoppingEmission ReportNo.:EED22O81825501Page83of96 BandEdge(Hopping)NVNT3-DH52480MHzAnt1HoppingRef BandEdge(Hopping)NVNT3-DH52480MHzAnt1HoppingEmission ReportNo.:EED22O8…

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ReportNo.:EED32O81825501Page1of53 COVERPAGE TESTREPORT Product:SituationalAwarenessEarmuffs Trademark:KleinTools Model/Typereference:AESEM1S SerialNumber:N/A ReportNumber:EED32O81825501 FCCID:2AI28-AESEM1S DateofIssue:Dec.23,2022 TestStandards:47CFRPart15SubpartC Testresult:PASS Preparedfor: KleinTools,Inc 450BondSt.Lincolnshire,IL60069USA Preparedby : CentreTestingInternationalGroupCo.,Ltd. HongweiIndustrialZone,Bao’an70District, Shenzhen,Guangdong,China TEL:+86-755-33683668 FAX:+86-755-33683385 Compiledby: Reviewedby: MartinLeeTomChen Approvedby:Date:Dec.23,2022 AaronMa CheckNo.:5618161122 ReportNo.:EED32O81825501Page 2 of 53 1Contents Page 1CONTENTS......................................................................................................................................................................2 2VERSION..........................................................................................................................................................................3 3TESTSUMMARY............................................................................................................................................................4 4GENERALINFORMATION...........................................................................................................................................5 4.1C LIENT I NFORMATION .................................................................................................................................................5 4.2G ENERAL D ESCRIPTIONOF EUT.................................................................................................................................5 4.3T EST C ONFIGURATION ................................................................................................................................................7 4.4T EST E NVIRONMENT ...................................................................................................................................................8 4.5D ESCRIPTIONOF S UPPORT U NITS ...............................................................................................................................8 4.6T EST L OCATION ..........................................................................................................................................................8 4.7M EASUREMENT U NCERTAINTY (95% CONFIDENCELEVELS , K =2)..........................................................................8 4.8E QUIPMENT L IST .........................................................................................................................................................9 5TESTRESULTSANDMEASUREMENTDATA.....................................................................................................12 5.1A NTENNA R EQUIREMENT ..........................................................................................................................................12 5.2M AXIMUM C ONDUCTED O UTPUT P OWER .................................................................................................................13 5.320 D BE MISSION B ANDWIDTH ....................................................................................................................................14 5.4C ARRIER F REQUENCY S EPARATION ..........................................................................................................................15 5.5N UMBEROF H OPPING C HANNEL ...............................................................................................................................16 5.6T IMEOF O CCUPANCY ................................................................................................................................................17 5.7B ANDEDGE M EASUREMENTS ...................................................................................................................................18 5.8C ONDUCTED S PURIOUS E MISSIONS ...........................................................................................................................19 5.9P SEUDORANDOM F REQUENCY H OPPING S EQUENCE .................................................................................................20 5.10R ADIATED S PURIOUS E MISSION &R ESTRICTEDBANDS .........................................................................................22 6APPENDIXBTCLASSIC............................................................................................................................................44 7PHOTOGRAPHSOFTESTSETUP..........................................................................................................................45 8PHOTOGRAPHSOFEUTCONSTRUCTIONALDETAILS..................................................................................47 ReportNo.:EED32O81825501Page 3 of 53 2Version VersionNo.DateDescription 00Dec.23,2022Original ReportNo.:EED32O81825501Page 4 of 53 3TestSummary TestItemTestRequirementResult AntennaRequirement 47CFRPart15,SubpartCSection 15.203/15.247(c) PASS ACPowerLineConducted Emission 47CFRPart15,SubpartCSection 15.207 N/A MaximumConductedOutput Power 47CFRPart15,SubpartCSection 15.247(b)(1) PASS 20dBEmissionBandwidth 47CFRPart15,SubpartCSection 15.247(a)(1) PASS CarrierFrequency Separation 47CFRPart15,SubpartCSection 15.247(a)(1) PASS NumberofHoppingChannels 47CFRPart15,SubpartCSection 15.247(a)(1) PASS TimeofOccupancy47CFRPart15,SubpartCSection15.247(a)(1)PASS PseudorandomFrequency HoppingSequence 47CFRPart15,SubpartCSection 15.247(b)(4) PASS BandEdgeMeasurements 47CFRPart15,SubpartCSection 15.247(d) PASS ConductedSpurious Emissions 47CFRPart15,SubpartCSection 15.247(d) PASS RadiatedSpurious emissions 47CFRPart15,SubpartCSection15.205/15.209PASS Restrictedbandsaround fundamentalfrequency 47CFRPart15,SubpartCSection15.205/15.209PASS N/A:WhentheEUTcharging,BTwillnotw…

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