2BTTP-ZX3300SOUND LEVEL METER/ANALYZER

ZXONICZX3300SoundLevelAnalyzer ZX3300 SoundLevelAnalyzer UserManual ZXONICZX3300SoundLevel Analyzer - 1 - Copyright Copyright2025-2028,by ZXONICTechnology,Inc. This manualis copyrighted,with all right reserved.The manualmay not be copiedin wholeor in part for any use withoutprior writtenconsentof ZXONICTechnology,Inc. FCC Caution This devicecomplieswith part 15 of the FCC Rules.Operationis subjectto the followingtwo conditions: 1) This devicemay not cause harmfulinterference,and 2) This devicemust acceptany interferencereceived,includinginterferencethat may causeundesiredoperation.Any changesor modificationsnot expresslyapprovedby the partyresponsiblefor compliancecouldvoid the user'sauthorityto operatethe equipment. NOTE:This equipmenthas been testedand found to complywith the limits for a Class B digital device,pursuantto Part 15 of the FCC Rules.Theselimits are designedto providereasonable protectionagainstharmfulinterferencein a residentialinstallation.This equipmentgenerates, uses and can radiateradio frequencyenergyand, if not installedand used in accordancewith the instructions,may causeharmfulinterferenceto radio communications.However,there is no guaranteethat interferencewill not occurin a particularinstallation.If this equipment does cause harmfulinterferenceto radio or televisionreception,whichcan be determinedby turningthe equipmentoff and on, the user is encouragedto try to correctthe interferenceby one or more of the followingmeasures: 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. Specific Absorption Rate (SAR) information: This Device meets the government's requirements for exposure to radio waves. The guidelines are based on standards that were developed by independent scientific organizations through periodic and thorough evaluation of scientific studies. The standards include a substantial safety margin designed to assure the safety of all persons regardless of age or health. FCC RF Exposure Information and Statement the SAR limit of USA (FCC) is 1.6 W/kg averaged over one gram of tissue. The evice has also been tested against this SAR limit. This device was tested for typical body-worn operations with the back of the device kept 0mm from the body. To maintain compliance with FCC RF exposure requirements, use accessories that maintain an 0mm separation distance between the user's body and the back of the device. The use of belt clips, holsters and similar accessories should not contain metallic components in its assembly. The use of accessories that do not satisfy these requirements may not comply with FCC RF exposure requirements, and should be avoided. ZXONICZX3300SoundLevelAnalyzer -2- HealthandSafetyConsideration ThisapparatushasbeendesignedandtestedinaccordancewithIEC/EN61010–1.Thismanual containsinformationandwarningsthatmustbefollowedtoensuresafeoperationandtoretain theapparatusinasafecondition. SafetyUsageConsideration WhenusingtheZX3300SoundLevelAnalyzer,itiscrucialtoadheretosafetyguidelinesto preventfirehazardsorpersonalinjury.Ensurethatyoufullyreadandunderstandthesafety noticebeforeuse.Alwaysoperatethedeviceonlyforitsintendedpurposeandrefrainfrom unauthorizeddisassembly,astamperingmayleadtomalfunctionsorunsafeconditions.Ifthe devicebeginstooverheatorshowsignsofmalfunction,immediatelyceaseoperationtoavoid potentialrisks.Foranyrequiredrepairs,alwayscontactZXONICratherthanattemptingfixes yourself.Additionally,keepthedeviceawayfromheatsources,openflames,or high-temperatureareastoensuresafeandoptimalacousticperformance. ZXONICZX3300SoundLevelAnalyzer -3- LimitedWarranty&LimitationofLiability ZXONICmadeeveryefforttoensuretheaccuracyoftheinformationcontainedinthisdocument.No responsibilityisacceptedforanyerrorsoromissionsherein.Itistheresponsibilityoftheusertoensure compliancewithanylegalorstatutoryrequirementsinthecountryofuse.Dataandlegislationmay change;therefore,usersareadvisedtoobtaincopiesofthemostrecentlyissuedapplicableregulations, standards,andguidelines. TheZX3300MultifunctionalSoundLevelMeteriswarrantedtobefreefromdefectsinmaterialand workmanshipundernormaluseandservice.Thewarrantyperiodistwo(2)yearsfromthedateof shipment.Parts,productrepairs,andservicesarewarrantedforninety(90)days.Thiswarrantyislimited totheoriginalpurchaserandisnotapplicabletofusesoranyproductthat,inZXonic’ssolediscretion,has beensubjectedtomisuse,alteration,neglect,contamination,accidentaldamage,orabnormalconditions ofoperationorhandling. ZXonicwarrantsthatthesoftwarewilloperatesubstantiallyinaccordancewithitsfunctional specificationsforaperiodofninety(90)daysandthatithasbeenproperlyrecordedonnon-defective media.ZXonicdoesnotwarrantthatthesoftwarewillbeerror-freeoruninterrupted. WarrantysupportisavailablesolelyforproductspurchasedthroughZXonic.ZXonicreservestherightto chargethebuyerforcostsrelatedtorepairorreplacementparts. ZXonic'swarrantyobligationislimited,atitsdiscretion,toeitherarefundofthepurchaseprice,free repair,orreplacementofadefectiveproductreturnedtoZXonicwithinthewarrantyperiod.Toobtain warrantyservice,thebuyermustcontactZXonicforreturnauthorizationandthensendtheproductalong withadescriptionoftheissue,postage,andinsuranceprepaid(FOBDestination).ZXonicassumesno responsibilityfordamageduringtransit. Uponcompletionofwarrantyrepair,theproductwillbereturnedtothebuyer,transportationprepaid (FOBDestination).IfZXonicdeterminesthatthefailureresultedfromneglect,misuse,contamination, alteration,accident,abnormaloperatingconditions,overvoltagefailureoutsidethespecifiedrating,or normalwearandtearofmechanicalcomponents,ZXonicwillprovideanestimateofrepaircostsandseek authorizationbeforeproceedingwithrepairs.Followingrepairs,theproductwillbereturnedtothebuyer, prepaidtransportation,andthebuyerwillberesponsibleforpaymentoftherepaircostsandreturn shippingcha…

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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] S T L A B S SAR Dipole Performance Measurement Report EUT Type： SAR Validation Dipole and Waveguide Model Name： DIP0G835, DIP1G900, DIP2G450, DIP2G600, WGA32 Brand Name: SATIMO Test Conclusion： Pass Test Date： 11 Dec. 2024&03 Jul. 2025 Date of Issue： 03 Jul. 2025 Testing Engineer : (Xin.Liu) Technical Manager : (Shifan. Long) Authorized Signatory : (Bovey Yang) ISSUED BY Shenzhen STS Test Services Co., Ltd. Kind of Equipment Manufacturer Type No. Serial No. Last Calibration Calibrated Until PC Acer N/A N/A N/A N/A E-Field Probe MVG SSE2 SN 08/21 EPGO352 2024.09.18 2025.09.17 Dielectric Probe Kit MVG SCLMP SN 32/14 OCPG67 2024.09.18 2025.09.17 Phantom1 MVG SAM SN 32/14 SAM115 N/A N/A Phantom2 MVG SAM SN 32/14 SAM116 N/A N/A Attenuator Agilent 99899 DC-18GHz N/A N/A Directional coupler Narda 4226-20 3305 N/A N/A Network Analyzer Agilent E5071C MY46520378 2024-09-25 2025-09-26 Multi Meter Keithley Multi Meter 2000 4050073 2024-09-25 2025-09-26 Signal Generator Agilent N5182A MY50140530 2024-09-25 2025-09-26 Power Amplifier DESAY ZHL-42W 9638 2024-09-25 2025-09-26 Power Meter R&S NRP 100510 2024-09-25 2025-09-26 Power Sensor R&S NRP-Z11 101919 2024-09-25 2025-09-26 Power Sensor Keysight U2021XA MY56280002 2024-09-25 2025-09-26 Temperature hygrometer SuWei SW-108 N/A 2024.10.15 2025.10.14 Thermograph Elitech RC-4 S/N EF7176501537 2024.10.15 2025.10.14 ISSUED BY Shenzhen STS Test Services Co., Ltd. 2. <Justification of the extended calibration> Referring to KDB 865664 D01, if dipoles are verified in return loss<-20dB, (within 20% of prior calibration), and in impedance (within 5 ohm of prior calibration), the annual calibration is not necessary and the calibration interval can be extended. Head 835 MHz Date of Measurement Return Loss (dB) Delta (%) Impedance Delta(ohm) 2023.07.04 -28.13 - 51.4 - 2024.07.01 -28.43 1.07 52.62 2.37 2025.07.03 -28.83 2.47 52.51 2.16 The return loss is <-20dB, within 20% of prior calibration; the impedance is within 5 ohm of prior calibration. Therefore the verification result should support extended calibration. <Dipole Verification Data> Head 835MHz ISSUED BY Shenzhen STS Test Services Co., Ltd. Head 1900 MHz Date of Measurement Return Loss (dB) Delta (%) Impedance Delta(ohm) 2023.09-14 -23.66 - 51.4 - 2024.07.01 -23.62 -0.17 50.73 -1.30 2025.07.03 -23.89 0.96 50.62 -1.52 The return loss is <-20dB, within 20% of prior calibration; the impedance is within 5 ohm of prior calibration. Therefore the verification result should support extended calibration. <Dipole Verification Data> Head 1900 MHz ISSUED BY Shenzhen STS Test Services Co., Ltd. Head 2450 MHz Date of Measurement Return Loss (dB) Delta (%) Impedance Delta(ohm) 2023.07.04 -26.03 - 46.3 - 2024.07.01 -26.42 1.50 47.25 2.05 2025.07.03 -26.91 3.38 47.4 2.37 The return loss is <-20dB, within 20% of prior calibration; the impedance is within 5 ohm of prior calibration. Therefore the verification result should support extended calibration. <Dipole Verification Data> Head 2450 MHz ISSUED BY Shenzhen STS Test Services Co., Ltd. Head 2600 MHz Date of Measurement Return Loss (dB) Delta (%) Impedance Delta(ohm) 2023.07.04 -34.32 - 50.3 - 2024.07.01 -33.58 -2.16 49.61 -1.37 2025.07.03 -34.78 1.34 48.94 -2.71 The return loss is <-20dB, within 20% of prior calibration; the impedance is within 5 ohm of prior calibration. Therefore the verification result should support extended calibration. <Dipole Verification Data> Head 2600 MHz ISSUED BY Shenzhen STS Test Services Co., Ltd. Head 5000 MHz Date of Measurement Return Loss (dB) Delta (%) Impedance Delta(ohm) 2023.07.04 < -8.23 - - - 2024.07.01 -9.10 10.57 - - 2025.07.03 -9.70 17.86- - - The return loss is <-8dB, within 20% of prior calibration; Therefore the verification result should support extended calibration. <Dipole Verification Data> Head 5000MHz

2BTTP-ZX3300_SAR Setup photos Body Back side(separation distance is 0mm) Body Front Side (separation distance is 0mm) Body Left side(separation distance is 0mm) Body Right side(separation distance is 0mm) Body Bottom side(separation distance is 0mm)

FCC ID: 2BTTP-ZX3300 Test Setup Photos of the EUT FCC ID: 2BTTP-ZX3300 FCC ID: 2BTTP-ZX3300

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No. .................... : FCC ID. ........................................... : CTA25092602206 2BTTP-ZX3300 Compiled by ( position+printed name+signature) . : File administrators Zoey Cao Supervised by ( position+printed name+signature) . : Project Engineer Ace Chai Approved by ( position+printed name+signature) . : RF Manager Eric Wang Date of issue .................................... : Nov. 03, 2025 Testing Laboratory Name .............. : Shenzhen CTA Testing Technology Co., Ltd. Address ............................................ : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Applicant’s name ........................... : Zxonic Technology, Inc. Address ............................................ : 777 N. First Street, Suite 440 San Jose, CA 95112 6311 Test specification ........................... : Standard ........................................... : FCC Part 15.247 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description ..................... : SOUND LEVEL METER/ANALYZER Trade Mark ....................................... : ZXONIC Manufacturer .................................... : Zxonic Technology, Inc. Model/Type reference ...................... : ZX3300 Listed Models ................................... : N/A Modulation ....................................... : GFSK, Π/4DQPSK, 8DPSK Frequency ......................................... From 2402MHz to 2480MHz Ratings ............................................. : DC 3.6V From battery and DC 9.0V From external circuit Result ............................................... : PASS Report No.: CTA25092602206 Page 2 of 31 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : SOUND LEVEL METER/ANALYZER Model /Type : ZX3300 Listed Models : N/A Applicant : Zxonic Technology, Inc. Address : 777 N. First Street, Suite 440 San Jose, CA 95112 6311 Manufacturer : Zxonic Technology, Inc. Address : 777 N. First Street, Suite 440 San Jose, CA 95112 6311 Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: CTA25092602206 Page 3 of 31 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 TEST STANDARDS ...................................................................................................................................... 4 2 SUMMARY .................................................................................................................................................... 5 2.1 General Remarks .............................................................................................................................. 5 2.2 Product Description ........................................................................................................................... 5 2.3 Equipment Under Test ....................................................................................................................... 5 2.4 Short description of the Equipment under Test (EUT) ...................................................................... 5 2.5 EUT configuration .............................................................................................................................. 6 2.6 EUT operation mode ......................................................................................................................... 6 2.7 Block Diagram of Test Setup ............................................................................................................. 6 2.8 Related Submittal(s) / Grant (s) ......................................................................................................... 6 2.9 Modifications ...................................................................................................................................... 6 3 TEST ENVIRONMENT ................................................................................................................................. 7 3.1 Address of the test laboratory............................................................................................................ 7 3.2 Test Facility ....................................................................................................................................... 7 3.3 Environmental conditions .................................................................................................................. 7 3.4 Summary of measurement results .................................................................................................... 8 3.5 Statement of the measurement uncertainty .....…

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1. Antenna Description: Antenna type PIFA antenna Model ZX3300 Frequency range 2400-2500MHz, 5180-5320MHz, 5745-5825MHz Manufacturer Zxonic Technology, Inc. Address 777 N. First Street, Suite 440 San Jose, CA 95112 6311 ANT Peak Gain 2 dBi 2. Antenna Photo: Length :23.17mm Width:12.19mm 3. Test Equipment & Conditions 3.1 Test instrument VSWR is tested using Agilent E5071B connected to a hand mechanism, and the status is free space. 3.2 Test environment and methods 4．Antenna Radiation Pattern 2400MHz 2450MHz 2500MHz 5180MHz 5450MHz 5320MHz 5745MHz 5785MHz 5825MHz

1 FCC Appendix RF Test Data for BT FCC ID : 2BTTP-ZX3300 Company : Zxonic Technology, Inc. EUT : SOUND LEVEL METER/ANALYZER Model Number : ZX3300 Report No. : CTA25092602206 Reviewed By : Eric Wang 2 Appendix A: 20dB Emission Bandwidth Test Result TestMode Antenna Freq(MHz) 20dB EBW[MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.951 2401.550 2402.501 --- --- 2441 0.957 2440.547 2441.504 --- --- 2480 0.942 2479.556 2480.498 --- --- 2DH5 Ant1 2402 1.320 2401.349 2402.669 --- --- 2441 1.281 2440.385 2441.666 --- --- 2480 1.287 2479.382 2480.669 --- --- 3DH5 Ant1 2402 1.308 2401.364 2402.672 --- --- 2441 1.320 2440.352 2441.672 --- --- 2480 1.317 2479.355 2480.672 --- --- 3 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 4 2DH5_Ant1_2402 2DH5_Ant1_2441 5 2DH5_Ant1_2480 3DH5_Ant1_2402 3DH5_Ant1_2441 6 3DH5_Ant1_2480 7 Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Freq(MHz) OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.87135 2401.5737 2402.4451 --- --- 2441 0.87151 2440.5730 2441.4445 --- --- 2480 0.86824 2479.5751 2480.4434 --- --- 2DH5 Ant1 2402 1.1916 2401.4171 2402.6087 --- --- 2441 1.1910 2440.4190 2441.6100 --- --- 2480 1.1924 2479.4199 2480.6123 --- --- 3DH5 Ant1 2402 1.1938 2401.4174 2402.6112 --- --- 2441 1.1896 2440.4213 2441.6109 --- --- 2480 1.1920 2479.4205 2480.6125 --- --- 8 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 9 2DH5_Ant1_2402 2DH5_Ant1_2441 10 2DH5_Ant1_2480 3DH5_Ant1_2402 3DH5_Ant1_2441 11 3DH5_Ant1_2480 12 Appendix C: Maximum conducted output power Test Result Peak Test Mode Antenna Freq(MHz) Conducted Peak Powert[dBm] Conducted Limit[dBm] Verdict DH5 Ant1 2402 -0.29 ≤20.97 PASS 2441 -0.26 ≤20.97 PASS 2480 -0.19 ≤20.97 PASS 2DH5 Ant1 2402 2.67 ≤20.97 PASS 2441 2.57 ≤20.97 PASS 2480 2.64 ≤20.97 PASS 3DH5 Ant1 2402 2.79 ≤20.97 PASS 2441 2.60 ≤20.97 PASS 2480 2.62 ≤20.97 PASS 13 Appendix D: Carrier frequency separation Test Result TestMode Antenna Freq(MHz) Result[MHz] Limit[MHz] Verdict DH5 Ant1 Hop 1.008 ≥0.957 PASS 2DH5 Ant1 Hop 1.148 ≥0.880 PASS 3DH5 Ant1 Hop 1.084 ≥0.880 PASS 14 Test Graphs DH5_Ant1_Hop 2DH5_Ant1_Hop 3DH5_Ant1_Hop 15 16 Appendix E: Time of occupancy Test Result TestMode Antenna Freq(MHz) BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict DH1 Ant1 Hop 0.390 315 0.123 ≤0.4 PASS DH3 Ant1 Hop 1.650 168 0.277 ≤0.4 PASS DH5 Ant1 Hop 2.900 109 0.316 ≤0.4 PASS 2DH1 Ant1 Hop 0.390 315 0.123 ≤0.4 PASS 2DH3 Ant1 Hop 1.640 157 0.257 ≤0.4 PASS 2DH5 Ant1 Hop 2.890 107 0.309 ≤0.4 PASS 3DH1 Ant1 Hop 0.390 317 0.124 ≤0.4 PASS 3DH3 Ant1 Hop 1.640 156 0.256 ≤0.4 PASS 3DH5 Ant1 Hop 2.900 103 0.299 ≤0.4 PASS 17 Test Graphs DH1_Ant1_Hop DH3_Ant1_Hop 18 DH5_Ant1_Hop 19 2DH1_Ant1_Hop 2DH3_Ant1_Hop 20 2DH5_Ant1_Hop 21 3DH1_Ant1_Hop 3DH3_Ant1_Hop 22 3DH5_Ant1_Hop 23 24 Appendix F: Number of hopping channels Test Result TestMode Antenna Freq(MHz) Result[Num] Limit[Num] Verdict DH5 Ant1 Hop 79 ≥15 PASS 2DH5 Ant1 Hop 79 ≥15 PASS 3DH5 Ant1 Hop 79 ≥15 PASS 25 Test Graphs DH5_Ant1_Hop 2DH5_Ant1_Hop 3DH5_Ant1_Hop 26 27 Appendix G: Band edge measurements Test Result TestMode Antenna ChName Freq(MHz) RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 Low 2402 -0.84 -57.84 ≤-20.84 PASS High 2480 -0.99 -62.5 ≤-20.99 PASS Low Hop_2402 -0.93 -61.76 ≤-20.93 PASS High Hop_2480 -0.48 -63.85 ≤-20.48 PASS 2DH5 Ant1 Low 2402 -0.25 -51.45 ≤-20.25 PASS High 2480 -0.36 -59.08 ≤-20.36 PASS Low Hop_2402 -1.92 -52.59 ≤-21.92 PASS High Hop_2480 0.04 -52.64 ≤-19.96 PASS 3DH5 Ant1 Low 2402 -0.51 -48.95 ≤-20.51 PASS High 2480 -1.11 -62.35 ≤-21.11 PASS Low Hop_2402 -1.47 -53.27 ≤-21.47 PASS High Hop_2480 -0.13 -63.33 ≤-20.13 PASS 28 Test Graphs DH5_Ant1_Low_2402 DH5_Ant1_High_2480 DH5_Ant1_Low_Hop_2402 29 DH5_Ant1_High_Hop_2480 2DH5_Ant1_Low_2402 30 2DH5_Ant1_High_2480 2DH5_Ant1_Low_Hop_2402 2DH5_Ant1_High_Hop_2480 31 3DH5_Ant1_Low_2402 3DH5_Ant1_High_2480 32 3DH5_Ant1_Low_Hop_2402 3DH5_Ant1_High_Hop_2480 33 Appendix H: Conducted Spurious Emission Test Result TestMode Antenna Freq(MHz) FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 2402 Reference -0.23 -0.23 --- PASS 30~1000 -0.23 -68.02 ≤-20.23 PASS 1000~26500 -0.23 -44.02 ≤-20.23 PASS 2441 Reference -1.30 -1.30 --- PASS 30~1000 -1.30 -67.12 ≤-21.3 PASS 1000~26500 -1.30 -43.72 ≤-21.3 PASS 2480 Reference -1.30 -1.30 --- PASS 30~1000 -1.30 -67.91 ≤-21.3 PASS 1000~26500 -1.30 -43.99 ≤-21.3 PASS 2DH5 Ant1 2402 Reference -1.08 -1.08 --- PASS 30~1000 -1.08 -68.29 ≤-21.08 PASS 1000~26500 -1.08 -43.96 ≤-21.08 PASS 2441 Reference -2.66 -2.66 --- PASS 30~1000 -2.66 -68.13 ≤-22.66 PASS 1000~26500 -2.66 -44.39 ≤-22.66 PASS 2480 Reference -2.99 -2.99 --- PASS 30~1000 -2.99 -68.31 ≤-22.99 PASS 1000~26500 -2.99 -46.03 ≤-22.99 PASS 3DH5 Ant1 2402 Reference -2.09 -2.09 --- PASS 30~1000 -2.09 -68.53 ≤-22.09 PASS 1000~26500 -2.09 -40.95 ≤-22.09 PASS 2441 Reference -2.53 -2.53 --- PASS 30~1000 -2.53 -31.32 ≤-22.53 PASS 1000~26500 -2.53 -43.26 ≤-22.53 PASS 2480 Reference -0.11 -0.11 --- PASS 30~1000 -0.11 -68.39 ≤-20.11 PASS 1000~26500 -0.11 -46.28 ≤-20.11 PASS 34 Test Graphs DH5_Ant1_2402_0~Reference DH5_Ant1_2402_30~1000 DH5_Ant1_2402_1000~26500 35 DH5_Ant1_2441_0~Reference DH5_Ant1_2441_30~1000 36 DH5_Ant1_2441_1000~26500 DH5_Ant1_2480_0~Reference DH5_Ant1_2480_30~1000 37 DH5_Ant1_2480_1000~26500 2DH5_Ant1_2402_0~Reference 38 2DH5_Ant1_2402_30~1000 2DH5_Ant1_2402_1000~26500 2DH5_Ant1_2441_0~Reference

39 2DH5_Ant1_2441_30~1000 2DH5_Ant1_2441_1000~26500 40 2DH5_Ant1_2480_0~Reference 2DH5_Ant1_2480_30~1000 2DH5_Ant1_2480_1000~26500 41 3DH5_Ant1_2402_0~Reference 3DH5_Ant1_2402_30~1000 42 3DH5_Ant1_2402_1000~26500 3DH5_Ant1_2441_0~Reference 3DH5_Ant1_2441_30~1000 43 3DH5_Ant1_2441_1000~26500 3DH5_Ant1_2480_0~Reference 44 3DH5_Ant1_2480_30~1000 3DH5_Ant1_2480_1000~26500 45 Appendix I: Duty Cycle Test Result TestMode Antenna Freq(MHz) ON Time [ms] Period [ms] DC [%] xFactor Limit Verdict DH5 Ant1 2402 2.92 3.75 77.87 1.09 --- --- 2441 2.91 3.75 77.60 1.10 --- --- 2480 2.92 3.75 77.87 1.09 --- --- 2DH5 Ant1 2402 2.91 3.75 77.60 1.10 --- --- 2441 2.92 3.75 77.87 1.09 --- --- 2480 2.92 3.75 77.87 1.09 --- --- 3DH5 Ant1 2402 2.92 3.75 77.87 1.09 --- --- 2441 2.92 3.75 77.87 1.09 --- --- 2480 2.92 3.75 77.87 1.09 --- --- 46 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 47 2DH5_Ant1_2402 2DH5_Ant1_2441 48 2DH5_Ant1_2480 3DH5_Ant1_2402 3DH5_Ant1_2441 49 3DH5_Ant1_2480

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. SAR Test Report Report No.:STS2511026H01 Issued for Zxonic Technology, Inc. 777 N. First Street, Suite 440 San Jose, CA 95112 6311 Product Name: SOUND LEVEL METER/ANALYZER Brand Name: ZXONIC Model Name: ZX3300 Series Model(s): N/A FCC ID: 2BTTP-ZX3300 Test Standard: ANSI/IEEE Std. C95.1 FCC 47 CFR Part 2 (2.1093) IEEE Std. 1528-2013 Max. Report SAR (1g) Body: 0.724 W/kg Page 2 of 88 Report No.: STS2511026H01 TEST REPORT CERTIFICATION Applicant’s name ................. : Zxonic Technology, Inc. Address ................................. : 777 N. First Street, Suite 440 San Jose, CA 95112 6311 Manufacturer's Name .......... : Zxonic Technology, Inc. Address ................................. : 777 N. First Street, Suite 440 San Jose, CA 95112 6311 Product description Product name ........................ : SOUND LEVEL METER/ANALYZER Brand name ......................... : ZXONIC Model name ......................... : ZX3300 Series Model .......................... : N/A Standards ............................. : ANSI/IEEE Std. C95.1 FCC 47 CFR Part 2 (2.1093) IEEE Std. 1528-2013 The device was tested by Shenzhen STS Test Services Co., Ltd. in accordance with the measurement methods and procedures specified in KDB 865664 The test results in this report apply only to the tested sample of the stated device/equipment. Other similar device/equipment will not necessarily produce the same results due to production tolerance and measurement uncertainties. Date of Test ........................................... : Date (s) of performance of tests ............. : 09 Nov. 2025 ~ 13 Nov. 2025 Date of Issue .......................................... : 18 Nov. 2025 Test Result.............................................. : Pass Testing Engineer : (Xin.Liu) Technical Manager : (Shifan. Long) Authorized Signatory : (Bovey Yang) Page 3 of 88 Report No.: STS2511026H01 Table of Contents 1. General Information 5 1.1 EUT Description 5 1.2 Test Environment 7 1.3 Test Factory 7 2. Test Standards and Limits 8 3. SAR Measurement System 9 3.1 Definition of Specific Absorption Rate (SAR) 9 3.2 SAR System 9 4. Tissue Simulating Liquids 12 4.1 Simulating Liquids Parameter Check 12 5. SAR System Validation 15 5.1 Validation System 15 5.2 Validation Result 16 6. SAR Evaluation Procedures 17 7. EUT Antenna Location Sketch 18 7.1 SAR test exclusion consider table 19 8. EUT Test Position 22 8.1 Body-worn Position Conditions: 22 9. Uncertainty 23 9.1 Measurement Uncertainty 23 10. Conducted Power Measurement 26 10.1 Test Result 26 11. EUT and Test Setup Photo 41 11.1 EUT Photo 41 11.2 Setup Photo 44 12. SAR Result Summary 47 12.1 Body-worn SAR 47 12.2 Simultaneous Multi-band Transmission Evaluation 49 13. Equipment List 51 Appendix A. System Validation Plots 52 Appendix B. SAR Test Plots 68 Appendix C. Probe Calibration and Dipole Calibration Report 88 Page 4 of 88 Report No.: STS2511026H01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 18 Nov. 2025 STS2511026H01 ALL Initial Issue Page 5 of 88 Report No.: STS2511026H01 1. General Information Environmental evaluation measurements of specific absorption rate (SAR) distributions in emulated human head and body tissues exposed to radio frequency (RF) radiation from wireless portable devices for compliance with the rules and regulations of the U.S. Federal Communications Commission (FCC). 1.1 EUT Description Product Name SOUND LEVEL METER/ANALYZER Brand Name ZXONIC Model Name ZX3300 Series Model N/A Model Difference N/A Sample number 251104019-1 Battery Model: Brand: Rated Voltage: V Charge Limit Voltage: V Capacity: mAh Device Category Portable Product stage Production unit RF Exposure Environment General Population / Uncontrolled Hardware Version 1.0.4 Software Version 2.0.3.6 Frequency Range LTE Band 2: 1850 MHz ~ 1910 MHz LTE Band 5: 824 MHz ~ 848 MHz LTE Band 7:2500 MHz ~ 2570 MHz LTE Band 38:2570MHz ~ 2620 MHz LTE Band 41:2496 MHz ~ 2690 MHz WLAN802.11b/g/n20: 2412 MHz ~ 2462 MHz WLAN 802.11n40: 2422 MHz ~ 2452 MHz WLAN 802.11a/n20/n40: 5150 ~ 5250 MHz WLAN 802.11a/n20/n40: 5250 ~ 5350 MHz WLAN 802.11a/n20/n40: 5470 ~ 5725 MHz WLAN 802.11a/n20/n40: 5725 ~ 5850 MHz Bluetooth: 2402 MHz to 2480 MHz Max. Reported SAR(1g): (Limit:1.6W/kg) Test distance: Body:0mm Band Mode Body Worn(W/kg) PCB LTE Band 2 0.264 PCB LTE Band 5 0.392 PCB LTE Band 7 0.569 PCB LTE Band 38 0.724 PCB LTE Band 41 0.254 DTS 2.4G WLAN 0.147 DSS BT Note 0.082 NII 5.2G WLAN 0.530 NII 5.3G WLAN 0.411 NII 5.6G WLAN 0.237 NII 5.8G WLAN 0.311 1-g Sum SAR 1.254 Page 6 of 88 Report No.: STS2511026H01 FCC Equipment Class Licensed Portable Transmitter Held to Ear (PCE) Part 15 Spread Spectrum Transmitter (DSS) Digital Transmission System (DTS) Unlicensed National Information Infrastructure TX(NII) Operating Mode: LTE: QPSK, 16QAM 2.4G WLAN : 802.11b(DSSS):CCK,DQPSK,DBPSK 802.11g(OFDM):BPSK,QPSK,16-QAM,64-QAM 802.11n(OFDM):BPSK,QPSK,16-QAM,64-QAM 5G WLAN: 802.11a(OFDM):BPSK,QPSK,16-QAM,64-QAM 802.11n(OFDM):BPSK,QPSK,16-QAM,64-QAM 802.11ac(OFDM):BPSK,QPSK,16-QAM,64-QAM,256-QAM Bluetooth: GFSK +π/4DQPSK+8DPSK Antenna Specification: LTE: PIFA Antenna Bluetooth: PIFA Antenna WLAN: PIFA Antenna SIM Card Only supports one SIM card Hotspot Mode Not Support DTM Mode Not Support Note: 1. The EUT battery must be fully charged and checked periodically during the test to ascertain uniform power Page 7 of 88 Report No.: STS2511026H01 1.2 Test Environment Ambient conditions in the SAR laboratory: Items Required Temperature (°C) 18-25 Humidity (%RH) 30-70 1.3 Test Factory 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 FCC test Firm Registration No.: 625569 IC Registration No.: 12108A A2L…

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Zxonic Technology, Inc. 777 N. First Street, Suite 440 San Jose, CA 95112 6311 Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2025/12/30 U.S. Agent Designation Zxonic Technology, Inc. acknowledges their consent for the following contact located in the United States to act as their agent for …

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