2AHYH-HFD-W28White Noise Machine

FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Appendix III EUT External Photographs Photo 1 Appearance of EUT Photo 2 Appearance of Adapter FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Photo 3 Appearance of EUT Photo 4 Appearance of EUT FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Photo 5 Appearance of EUT Photo 6 Appearance of EUT FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Photo 7 Appearance of EUT Photo 8 Appearance of EUT

FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Appendix I Label Appendix II Label Location FCC ID:2AHYH-HFD-W28 Model:HFD-W28

FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Appendix IV EUT Internal Photographs Photo 9 Internal of EUT Photo 10 Internal of EUT FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Photo 11 Appearance of PCB Photo 12 Appearance of PCB FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Photo 13 Appearance of PCB Photo 14 Appearance of PCB FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Photo 15 Appearance of PCB Photo 16 Appearance of PCB FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Photo 17 Appearance of PCB Photo 18 Appearance of PCB FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Photo 19 Appearance of PCB Photo 20 Appearance of PCB FM Ant. FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Photo 21 Appearance of PCB Photo 22 Battery Appearance BT Ant.

Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202607-0097-5 Page: 1 of 8 TB-RF-073-3.1 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Email: [email protected] www.cotecna-toby.com Maximum Permissible Exposure Evaluation FCC ID: 2AHYH-HFD-W28 Report No. : TBR-C-202607-0097-5 Applicant : Shenzhen Hi-FiD Electronics Tech Co., Ltd Equipment Under Test (EUT) EUT Name : White Noise Machine Model No. : HFD-W28 Series Model No. : N/A Brand Name : N/A Sample ID : HC-C-202607-0097-01-01 Receipt Date : 2026-07-15 Test Date : 2026-07-15 to 2026-08-13 Issue Date : 2026-08-13 Standards : FCC Part 2.1091 Test Method : KDB 447498 D01 General RF Exposure Guidance v06 Conclusions : PASS In the configuration tested, the EUT complied with the standards specified above. Test By : Lily zhang Reviewed By : Lucase Yang Approved By : Ivan Su This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in the report. Report No.: TBR-C-202607-0097-5 Page: 2 of 8 www.cotecna-toby.com TB-RF-073-3.1 CONTENTS CONTENTS ............................................................................................................................................. 2 1. GENERAL INFORMATION ABOUT EUT.............................................................................. 4 1.1 Client Information ................................................................................................................. 4 1.2 General Description of EUT (Equipment Under Test) ................................................... 4 2. MEASUREMENT UNCERTAINTY .......................................................................................... 5 3. TEST FACILITY.......................................................................................................................... 6 4. METHOD OF MEASUREMENT FOR FCC............................................................................ 7 5. TEST RESULT............................................................................................................................ 8 Report No.: TBR-C-202607-0097-5 Page: 3 of 8 www.cotecna-toby.com TB-RF-073-3.1 Revision History Report No. Version Description Issued Date TBR-C-202607-0097-5 Rev.01 Initial issue of report 2026-08-13 Report No.: TBR-C-202607-0097-5 Page: 4 of 8 www.cotecna-toby.com TB-RF-073-3.1 1. General Information about EUT 1.1 Client Information Applicant : Shenzhen Hi-FiD Electronics Tech Co., Ltd Address : 4F,B7 Building, Hengfeng industrial City, Hezhou Village, Xixiang Town, Bao'an District, Shenzhen, China Manufacturer : Shenzhen Hi-FiD Electronics Tech Co., Ltd Address : 4F,B7 Building, Hengfeng industrial City, Hezhou Village, Xixiang Town, Bao'an District, Shenzhen, China 1.2 General Description of EUT (Equipment Under Test) EUT Name : White Noise Machine Models No. : HFD-W28 Model Different : N/A Product Description : Operation Frequency: Bluetooth: 2402MHz~2480MHz Modulation Type: Bluetooth: GFSK, π/4-DQPSK, 8DPSK Antenna Gain: -0.58dBi PCB Antenna Power Rating : Adapter:(KA12C-0502000USS) Input: 100-240V, 50/60Hz 0.35A Output: 5V⎓2000mA DC 3.7V 250mAh Rechargeable Li-ion Polymer Battery Software Version : 8E39-3CCC1831 Hardware Version : V1.7 Remark: The above antenna information is declared by manufacturer and for more detailed features description, please refer to the manufacturer's specifications, the laboratory shall not be held responsible. Report No.: TBR-C-202607-0097-5 Page: 5 of 8 www.cotecna-toby.com TB-RF-073-3.1 2. Measurement Uncertainty The reported uncertainty of measurement y±U，where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2，providing a level of confidence of approximately 95 %. Test Item Parameters Expanded Uncertainty (ULab) Conducted Emission Level Accuracy: 9kHz~150kHz 150kHz to 30MHz ±3.50 dB ±3.10 dB Radiated Emission Level Accuracy: 9kHz to 30 MHz ±4.60 dB Radiated Emission Level Accuracy: 30MHz to 1000 MHz ±4.50 dB Radiated Emission Level Accuracy: Above 1000MHz ±4.20 dB Temperature / ±0.6°C Humidity / ±4% Supply voltages / ±2% Time / ±4% Report No.: TBR-C-202607-0097-5 Page: 6 of 8 www.cotecna-toby.com TB-RF-073-3.1 3. Test Facility The testing report were performed by the Shenzhen Toby Technology Co., Ltd., in their facilities located at 1/F., Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. At the time of testing, the following bodies accredited the Laboratory: CNAS (L5813) The Laboratory has been accredited by CNAS to ISO/IEC 17025: 2017 General Requirements for the Competence of Testing and Calibration Laboratories for the competence in the field of testing. And the Registration No.: CNAS L5813. A2LA Certificate No.: 4750.01 The laboratory has been accredited by American Association for Laboratory Accreditation(A2LA) to ISO/IEC 17025：2017 General Requirements for the Competence of Testing and Calibration Laboratories for the technical competence in the field of Electrical Testing. And the A2LA Certificate No.: 4750.01.FCC Accredited Test Site Number: 854351. Designation Number: CN1223. IC Registration No.: (11950A) The Laboratory has been registered by Certification and Engineering Bureau of Industry Canada for radio equipment testing. The site registration: Site# 11950A. CAB identifier: CN0056. Report No.: TBR-C-202607-0097-5 Page: 7 of 8 www.cotecna-toby.com TB-RF-073-3.1 4. Method of Measurement for FCC 4.1 EUT Operation Condition: Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. 4.2 Exposure Evaluation: Equation from page 18 of OET Bulletin 65, Edition 97-01 S=(PG)/4πR 2 Where S: …

Text truncated - open the document above for the full version.

Shenzhen Toby Technology Co., Ltd. Http://www.cotecna-toby.com Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202607-0097-2 Page: 1 of 69 FCC ID: 2AHYH-HFD-W28 TB-RF-073-3.1 RF Test Data for Bluetooth (Conducted Measurements) General Description of EUT Product Name: White Noise Machine Test Model: HFD-W28 Sample ID: HC-C-202607-0097-01-01 Environmental Conditions Temperature: 24.3°C Relative Humidity: 50% Test Voltage: DC 5V Test Engineer: Lily Zhang Note: For a more detailed features description, please refer to the report TBR-C-202607-0097-2 The report only show the worst case data. Shenzhen Toby Technology Co., Ltd. Http://www.cotecna-toby.com Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202607-0097-2 Page: 2 of 69 FCC ID: 2AHYH-HFD-W28 TB-RF-073-3.1 Contents Dwell Time .............................................................................................................................................................................................. 3 Duty Cycle............................................................................................................................................................................................... 9 Maximum Conducted Output Power ................................................................................................................................................... 15 -20dB Bandwidth .................................................................................................................................................................................. 21 Occupied Channel Bandwidth ............................................................................................................................................................. 27 Band Edge ............................................................................................................................................................................................ 33 Band Edge(Hopping) ............................................................................................................................................................................ 40 Conducted RF Spurious Emission ...................................................................................................................................................... 47 Restrict Band ........................................................................................................................................................................................ 57 Carrier Frequencies Separation .......................................................................................................................................................... 64 Number of Hopping Channel ............................................................................................................................................................... 67 Shenzhen Toby Technology Co., Ltd. Http://www.cotecna-toby.com Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202607-0097-2 Page: 3 of 69 FCC ID: 2AHYH-HFD-W28 TB-RF-073-3.1 Dwell Time Condition Mode Frequency (MHz) Antenna Pulse Time (ms) Total Dwell Time (ms) Period Time (ms) Limit (ms) Verdict NVNT 1-DH1 2441 Ant1 0.376 120.32 31600 400 Pass NVNT 1-DH3 2441 Ant1 1.633 261.28 31600 400 Pass NVNT 1-DH5 2441 Ant1 2.88 307.2 31600 400 Pass NVNT 2-DH1 2441 Ant1 0.386 123.52 31600 400 Pass NVNT 2-DH3 2441 Ant1 1.638 262.08 31600 400 Pass NVNT 2-DH5 2441 Ant1 2.886 307.84 31600 400 Pass NVNT 3-DH1 2441 Ant1 0.387 123.84 31600 400 Pass NVNT 3-DH3 2441 Ant1 1.637 261.92 31600 400 Pass NVNT 3-DH5 2441 Ant1 2.888 308.053 31600 400 Pass Shenzhen Toby Technology Co., Ltd. Http://www.cotecna-toby.com Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202607-0097-2 Page: 4 of 69 FCC ID: 2AHYH-HFD-W28 TB-RF-073-3.1 Test Graphs Dwell NVNT 1-DH1 2441MHz Ant1 Dwell NVNT 1-DH3 2441MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.cotecna-toby.com Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202607-0097-2 Page: 5 of 69 FCC ID: 2AHYH-HFD-W28 TB-RF-073-3.1 Dwell NVNT 1-DH5 2441MHz Ant1 Dwell NVNT 2-DH1 2441MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.cotecna-toby.com Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202607-0097-2 Page: 6 of 69 FCC ID: 2AHYH-HFD-W28 TB-RF-073-3.1 Dwell NVNT 2-DH3 2441MHz Ant1 Dwell NVNT 2-DH5 2441MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.cotecna-toby.com Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202607-0097-2 Page: 7 of 69 FCC ID: 2AHYH-HFD-W28 TB-RF-073-3.1 Dwell NVNT 3-DH1 2441MHz Ant1 Dwell NVNT 3-DH3 2441MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.cotecna-toby.com Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202607-0097-2 Page: 8 of 69 FCC ID: 2AHYH-HFD-W28 TB-RF-073-3.1 Dwell NVNT 3-DH5 2441MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.cotecna-toby.com Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202607-0097-2 Page: 9 of 69 FCC ID: 2AHYH-HFD-W28 TB-RF-073-3.1 Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT 1-DH5 2402 Ant1 76.8 1.15 0.35 NVNT 1-DH5 2441 Ant1 76.8 1.15 0.35 NVNT 1-DH5 2480 Ant1 76.82 1.15 0.35 NVNT 2-DH5 2402 Ant1 76.96 1.14 0.35 NVNT 2-DH5 244…

Text truncated - open the document above for the full version.

Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202607-0097-2 Page: 1 of 40 TB-RF-073-3.1 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Email: [email protected] www.cotecna-toby.com Radio Test Report FCC ID: 2AHYH-HFD-W28 Report No. : TBR-C-202607-0097-2 Applicant : Shenzhen Hi-FiD Electronics Tech Co., Ltd Equipment Under Test (EUT) EUT Name : White Noise Machine Model No. : HFD-W28 Series Model No. : N/A Brand Name : N/A Sample ID : HC-C-202607-0097-01-01& HC-C-202607-0097-01-02 Receipt Date : 2026-07-15 Test Date : 2026-07-15 to 2026-08-13 Issue Date : 2026-08-13 Standards : FCC Part 15 Subpart C 15.247 Test Method : KDB 558074 D01 15.247 Meas Guidance v05r02 ANSI C63.10: 2020+Cor.1:2023+C63.10a: 2024+Errata to C63.10a: 2024 Conclusions : PASS In the configuration tested, the EUT complied with the standards specified above. Test By : Lily Zhang Reviewed By : Lucase Yang Approved By : Ivan Su This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in the report. Report No.: TBR-C-202607-0097-2 Page: 2 of 40 www.cotecna-toby.com TB-RF-073-3.1 Contents CONTENTS ............................................................................................................................................ 2 1. GENERAL INFORMATION ABOUT EUT ............................................................................. 5 1.1 Client Information ................................................................................................................ 5 1.2 General Description of EUT (Equipment Under Test) ................................................... 5 1.3 Block Diagram Showing the Configuration of System Tested ...................................... 7 1.4 Description of Support Units .............................................................................................. 7 1.5 Description of Test Mode ................................................................................................... 8 1.6 Description of Test Software Setting ................................................................................ 9 1.7 Measurement Uncertainty ................................................................................................ 10 1.8 Test Facility......................................................................................................................... 11 2. TEST SUMMARY..................................................................................................................... 12 3. TEST SOFTWARE .................................................................................................................. 12 4. TEST EQUIPMENT AND TEST SITE .................................................................................. 13 5. CONDUCTED EMISSION ...................................................................................................... 15 5.1 Test Standard and Limit ................................................................................................... 15 5.2 Test Setup........................................................................................................................... 15 5.3 Test Procedure .................................................................................................................. 15 5.4 Deviation From Test Standard......................................................................................... 15 5.5 EUT Operating Mode ........................................................................................................ 15 5.6 Test Data............................................................................................................................. 16 6. RADIATED AND CONDUCTED UNWANTED EMISSIONS ............................................ 17 6.1 Test Standard and Limit ................................................................................................... 17 6.2 Test Setup........................................................................................................................... 18 6.3 Test Procedure .................................................................................................................. 19 6.4 Deviation From Test Standard......................................................................................... 20 6.5 EUT Operating Mode ........................................................................................................ 20 6.6 Test Data............................................................................................................................. 20 7. RESTRICTED BANDS AND BAND EDGE REQUIREMENT .......................................... 21 7.1 Test Standard and Limit ................................................................................................... 21 7.2 Test Setup........................................................................................................................... 21 7.3 Test Procedure .................................................................................................................. 22 7.4 Deviation From Test Standard......................................................................................... 22 7.5 EUT Operating Mode ........................................................................................................ 22 7.6 Test Data............................................................................................................................. 22 8. 99% OCCUPIED AND 20DB BANDWIDTH ....................................................................... 23 8.1 Test Standard and Limit ..................................................................................…

Text truncated - open the document above for the full version.

In verted F Antenna Specification Summary ITEM ANT SPEC Mode l Name 2. 4GANT Center Frequency Horizont al Vertical 2400MHz 2450MHz 2500MHz 2400MHz 2450MHz 2500MHz -1.26 -0.76 -0.58 -5.25 -2.46 -1.86 MAX. Gain -0.58 dBi Polarization Horizont al and Vertical Azimut h Beam Patte rn Omni-d irectiona l Impe da nce 50 Ohm Ant enna Lengt h 38.20 mm Manuf acture ZHUHAI JIE LI TECHNOLOGY CO.,LTD Address 333 Kexi ng Rd. , Nanpi ng Town, Xiangzhou Dist., Zhuha i City, Gua ngdong Province, Chi na Antenna Photo & Length (mm) 14.4mm 4.4mm 5.4mm 11.6mm Horizon tal: 2400 MHz 2450 MHz 2500 MHz Power (d Bm) Max: 0 Min: -40 Scale: 5/ div Frequency (MHz) Gain(dB) Max Min Avg 2400 -1.26174 -30.08 01 -7.18716 2450 -0.765802 -36.56 04 -7.48023 2500 -0. 585582 -22.03 15 -6. 59127 Vertical: 2400 MHz 2450 MH; 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/ div Frequency (MHz) Gain(dB) Max Min Avg 2400 -5.2537 -22.14 24 -12.42 94 2450 -2.4652 -24.58 37 -10.47 02 2500 -1. 86120 -29.52 14 -9. 20432 ANT Test Labs： Attestation of Globa l Compliance Co., Ltd.

FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Appendix V EUT Test Photographs Photo of Setup for Conducted Emission(AC POWER) Photo of Setup for Radiated Emission (30MHz~1GHz) FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Photo of Setup for Radiated Emission (Above 1 GHz) Conducted Measurements Test FCC ID:2AHYH-HFD-W28 www.cotecna-toby.com TB-RF-073-3.1 Conducted Measurements Test -----END OF REPORT-----