2ASUD-HMRBTWATERPROOF BLUETOOTH RECEIVER

MUTE 1 Contenuto dell’imballo / Packaging contents / Verpackungsinhalt / Contenido del embalaje / Conteúdo da embalagem / Contenu de l’emballage / パッケージ内容パッケージ内容 / Obsah balení 3 Dimensioni / Dimensions / Maße / Dimensiones / Dimensões / Dimensions / 寸法 寸法 / Dimensies 5 Precauzioni / Precautions / Sicherheitsvorkehrungen / Precauciones / Precauções / Précautions / 注意事項 注意事項 / Bezpečnostní opatření 4 Montaggio / Mounting / Montage / Montaje / Montagem / Assemblée / 取り付け 取り付け / Bijeenkomst PART OF ELETTROMEDIA Strada Regina Km 3,500 - Marignano 62018 Potenza Picena (MC) Italy T +39 0733 870 870 - F +39 0733 870 880 www.elettromedia.itAll specifications subject to change without notice HMR BT WATERPROOF BLUETOOTH RECEIVER hertz-audio.com Rev. 01 FML024 REV.22A 6 Specifiche tecniche / Technical Specifications / Technische Spezifikationen / Especificaciones técnicas / Especificações técnicas / Spécifications techniques / 技術仕様技術仕様 / Technické Údaje BLUETOOTH Specification Bluetooth Version 5.0 with Qualcomm® aptX™ HD audio Supported Profiles • A2DP (Advanced Audio Distribution Profile) • AVRCP 1.5 (Audio/Video Remote control profile) • SSP (Simple Secure Pairing) Connection Range Up to 10m (30ft.)* *Maximum range is achieved in line-of-sight installations, actual range will vary based on installation specifics. AUDIO Line Max Output Level @ 0.1 % THD 4Vrms x 2 (L/R) GENERAL Operating Voltage 8-28V dc Grounding System Negative Ground Fuse rating 2A (Mini ATC type) Operating Temperature Range -20°C to 70°C (-4°F to 158°F) IP Protection IPx7 (IEC60529)** Size (mm/in.) 73,7 x 63,7 x 16,7 / 2.9 x 2.5 x 0.66 Weight (Kg/Lbs) 0,153 / 0.338 (including the cable) NOTE: Specifications and design are subject to change without notice for further improvement. **IPx7 Water Resistance Rating: This product has been tested to withstand immersion in water, up to 1 meter (3.28 ft.) deep, for up to 30 minutes (when properly installed). Note - while designed to be water resistant, this product should never be submerged under water for prolonged periods or subjected to activity that creates pressure on it that exceeds its depth rating. BLUETOOTH: The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Elettromedia srl is under license. aptX™ HD: Qualcomm aptX is a product of Qualcomm Technologies, Inc. and/or its subsidiaries. Qualcomm is a trademark of Qualcomm Incorporated, registered in the United States and other countries. aptX is a trademark of Qualcomm Technologies International, Ltd., registered in the United States and other countries and any use of such marks by Elettromedia srl is under license. MUTE 1A 4 X 3 x 35 mm fixing kit 1 X fuse 1A 2 Connessioni / Connections / Verbindungen / Conexiones / Conexões / Connexions / 接続 接続 / Verbindingen to Amplifier to HMC U1 (Sold separately) + BAT 12/24V yellow GND black ACC red REM OUT blue FUSE Remote Control PRE OUTS L/R Direct to battery (+) Direct to battery (-) To ext. Amplifier For unit turn on/off 1A MUTE A SIZE AA1BB1CDE HMR BT 73,264,163,727,739,116,755,8mm 2.92.52.51.091.540.662.2in. MOUNTING Mounting Hole diameter mm (in.)Ø 45 (1.77) C E B D MUTE A1 B1 V O L V O L M U T E 1. This unit uses precision parts and components for its operation. In the event of any operating issues, never open the case or disassemble the unit. Contact your Hertz dealer or service center. 2. FCC STATEMENT 2.1 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference. (2) This device must accept any interference received, including interference that may cause undesired operation. 2.2 Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. FCC ID: 2ASUD-HMRBT 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. FCC Radiation Exposure Statement. This equipment complied with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20 cm between the unit & your body. 3. The Bluetooth word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by Elettromedia spa is under license. Other trademarks and trade names belong to their respective owners. 4. IC warning This device complies with Industry Canada’s license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) This device may not cause interference (2) This device must accept any interference, including interference that may cause undesired operation of the device. This Class B digital apparatus complies with Canadian ICES-0003. Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes: (1) l’appareil ne doit p…

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Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT This reportshall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 2 EXTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT This reportshall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 2 Fig.3

Label Location: FCC ID: 2ASUD-HMRBT

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 2 INTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Bluetooth Antenna Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 2 Fig.3

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 3 RADIO FREQUENCY EXPOSURE Limit According to section B.4 of 447498 D04 Interim General RF Exposure Guidance v01 SAR-based thresholds are derived based on frequency, power, and separation distance of the RF source. The formula defines the thresholds in general for either available maximum time-averaged power or maximum time-averaged ERP, whichever is greater. If the ERP of a device is not easily determined, such as for a portable device with a small form factor, the applicant may use the available maximum time-averaged power exclusively if the device antenna or radiating structure does not exceed an electrical length of λ/4. As for devices with antennas of length greater than λ/4 where the gain is not well defined, but always less than that of a half-wave dipole (length λ/2), the available maximum time-averaged power generated by the device may be used in place of the maximum time-averaged ERP, where that value is not known. The separation distance is the smallest distance from any part of the antenna or radiating structure for all persons, during operation at the applicable ERP. In the case of mobile or portable devices, the separation distance is from the outer housing of the device where it is closest to the antenna. The SAR-based exemption formula of § 1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2). Where and f is in GHz, d is the separation distance (cm), and ERP 20cm is per Formula (B.1). Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 3 The example values shown in Table B.2 are for illustration only. Frequency (MHz) Distance (mm) 5 10 15 20 25 30 35 40 45 50 300 39 65 88 110 129 148 166 184 201 217 450 22 44 67 89 112 135 158 180 203 226 835 9 25 44 66 90 116 145 175 207 240 1900 3 12 26 44 66 92 122 157 195 236 2450 3 10 22 38 59 83 111 143 179 219 3600 2 8 18 32 49 71 96 125 158 195 5800 1 6 14 25 40 58 80 106 136 169 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 3 Conducted Power Results Test Mode Channel Frequency (MHz) Measured Peak Output Power (dBm) GFSK(1Mbps) 00 2402 8.28 19 2440 8.09 39 2480 7.89 Manufacturing tolerance GFSK (1Mbps Peak) Channel Channel 0 Channel 19 Channel 39 Target (dBm) 8.0 8.0 7.5 Tolerance ±(dB) 1.0 1.0 1.0 Results Test Mode Channel Frequency (MHz) Max. Tune Up Power (dBm, Peak) Max. Eirp including Tune Up (dBm, Peak) Max. Eirp including Tune Up (mW, Peak) Exemption Limit (mW) GFSK(1Mbps) 2402 9.0 11.3 13.49 3060 2440 9.0 11.3 13.49 3060 2480 8.5 10.8 12.02 3060 The antenna gain of the EUT for BT is 2.3dBi(Max). the Maximum Eirp is used for Routine Evaluation Exemption according to B.4 of 447498 D04 Interim General RF Exposure Guidance v01. So, the SAR evaluation is not required.

1.AntennaDescription: AntennaplateMonopoleAntenna Antennapeakgain2.3dBi Frequencyrange2.402MHz~2.480MHz Connecttype DirectConnect 2.Pictureofantenna 3.AntennaRadiationPattern [email protected] [email protected] [email protected]

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 1 of 19 Appendix Test Data for BT(BLE) (Conducted Measurement) Product Name: WATERPROOF BLUETOOTH RECEIVER Trade Mark: Hertz Test Model: HMR BT FCC ID: 2ASUD-HMRBT Environmental Conditions Temperature: 25.5C Relative Humidity: 55% ATM Pressure: 100.0 kPa Test Engineer: Anna Hu Supervised by: Hugo Chen NOTE N/A Appendix A: DTS Bandwidth Test Result TestMode Antenna Channel DTS BW [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 0.648 2401.656 2402.304 0.5 PASS 2440 0.652 2439.652 2440.304 0.5 PASS 2480 0.656 2479.652 2480.308 0.5 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 2 of 19 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 3 of 19 Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Channel OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 1.0417 2401.4642 2402.5059 --- --- 2440 1.0370 2439.4659 2440.5029 --- --- 2480 1.0450 2479.4594 2480.5044 --- --- Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 4 of 19 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 5 of 19 Appendix C: Maximum Peak conducted output power Test Result TestMode Antenna Channel Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 2402 8.28 ≤30 PASS 2440 8.09 ≤30 PASS 2480 7.89 ≤30 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 6 of 19 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 7 of 19 Appendix D: Maximum power spectral density Test Result TestMode Antenna Channel Result[dBm/3-100kHz] Limit[dBm/3kHz] Verdict BLE_1M Ant1 2402 -6.77 ≤8.00 PASS 2440 -7.63 ≤8.00 PASS 2480 -6.51 ≤8.00 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 8 of 19 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 9 of 19 Appendix E: Band edge measurements Test Result TestMode Antenna ChName Channel RefLevel[dBm] Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 Low 2402 8.12 -48.1 ≤-11.88 PASS High 2480 7.90 -49.32 ≤-12.11 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 10 of 19 Test Graphs BLE_1M_Ant1_Low_2402 BLE_1M_Ant1_High_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 11 of 19 Appendix F: Conducted Spurious Emission Test Result TestMode Antenna Channel FreqRange [MHz] RefLevel [dBm] Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 2402 Reference 7.96 7.96 --- PASS 30~1000 7.96 -59.25 ≤-12.04 PASS 1000~26500 7.96 -41.7 ≤-12.04 PASS 2440 Reference 7.63 7.63 --- PASS 30~1000 7.63 -59.92 ≤-12.37 PASS 1000~26500 7.63 -40.71 ≤-12.37 PASS 2480 Reference 7.66 7.66 --- PASS 30~1000 7.66 -56.89 ≤-12.34 PASS 1000~26500 7.66 -43.49 ≤-12.34 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 12 of 19 Test Graphs BLE_1M_Ant1_2402_0~Reference BLE_1M_Ant1_2402_30~1000 BLE_1M_Ant1_2402_1000~26500 BLE_1M_Ant1_2440_0~Reference Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 13 of 19 BLE_1M_Ant1_2440_30~1000 BLE_1M_Ant1_2440_1000~26500 BLE_1M_Ant1_2480_0~Reference Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 14 of 19 BLE_1M_Ant1_2480_30~1000 BLE_1M_Ant1_2480_1000~26500 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 15 of 19 Appendix G: Duty Cycle Test Result TestMode Antenna Channel Transmission Duration [ms] Transmission Period [ms] Duty Cycle [%] 1/T[kHz] BLE_1M Ant1 2402 0.39 0.62 62.90 2.56 2440 0.39 0.62 62.90 2.56 2480 0.39 0.62 62.90 2.56 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 16 of 19 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 17 of 19 Appendix H: Emissions in Restricted Bands Test Result TestMode Antenna ChName Channel Detector Freq. [MHz] Result [dBm] Limit [dBm] Verdict BLE_1M Ant1 Low 2402 AV 2310.000 -48.9 ≤-41.20 PASS AV 2388.200 -47.83 ≤-41.20 PASS AV 2390.000 -48.22 ≤-41.20 PASS Peak 2310.000 -43.14 ≤-21.20 PASS Peak 2377.700 -39 ≤-21.20 PASS Peak 2390.000 -41.99 ≤-21.20 PASS High 2480 AV 2483.500 -44.81 ≤-41.20 PASS AV 2483.520 -44.81 ≤-41.20 PASS AV 2500.000 -47.85 ≤-41.20 PASS Peak 2483.500 -39.98 ≤-21.20 PASS Peak 2494.800 -38.18 ≤-21.20 PASS Peak 2500.000 -41.53 ≤-21.20 PASS Note： 1. The Antenna Gain is compensated in the graph with 2dBi and Antenna Gain which is Higher. 2. The limit in dBm for average detector is conversion from 54dBuV/m, according to 15.209(a). The limit in dBm for peak detector is 20dB above the limit of average detector in dBm. Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 18 of 19 Test Graphs BLE_1M_Ant1_Low_2402_AV BLE_1M_Ant1_Low_2402_Peak BLE_1M_Ant1_High_2480_AV BLE_1M_Ant1_High_2480_Peak Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT Report No.: TZ221103831-E Page 19 of 19

Report No.: TZ221103831-E Page 1 of 32 FCC TEST REPORT Test report On Behalf of Elettromedia s.p.a. For WATERPROOF BLUETOOTH RECEIVER Model No.: HMR BT FCC ID: 2ASUD-HMRBT Prepared for : Elettromedia s.p.a. 62018 Potenza Picena, Italy Prepared By : Shenzhen Tongzhou Testing Co.,Ltd 1th Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Date of Test: 2022/11/23~2022/12/4 Date of Report: 2022/12/5 Report Number: TZ221103831-E The test report apply only to the specific sample(s) tested under stated test conditions It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: TZ221103831-E Page 2 of 32 TEST RESULT CERTIFICATION Applicant’s name ................. : Elettromedia s.p.a. Address .................................. : 62018 Potenza Picena, Italy Manufacture's Name ............ : Avs (Ningbo) Industrial Co., Ltd. Address .................................. : 7TH BUILDING, NO.59 CHUANG FU ROAD, XIAO GANG INDUSTRIAL ZONE, NINGBO 315800, CHINA Product description Trade Mark: Hertz Product name ........................... : WATERPROOF BLUETOOTH RECEIVER Model and/or type reference : HMR BT Standards ............................. : FCC Rules and Regulations Part 15 Subpart C Section 15.247 ANSI C63.10: 2013 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Tongzhou Testing Co.,Ltd is acknowledged as copyright owner and source of the material. Shenzhen Tongzhou Testing 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. Date of Test ........................................... : Date (s) of performance of tests ............. : 2022/11/23~ 2022/12/4 Date of Issue .......................................... : 2022/12/5 Test Result .............................................. : Pass Testing Engineer : (Anna Hu) Technical Manager : (Hugo Chen) Authorized Signatory : (Andy Zhang) Report No.: TZ221103831-E Page 3 of 32 Revision History Revision Issue Date Revisions Revised By 000 2022/12/5 Initial Issue Andy Zhang Report No.: TZ221103831-E Page 4 of 32 TABLE OF CONTENTS 1. GENERAL INFORMATION ................................................................................................................................... 5 1.1. DESCRIPTION OF DEVICE (EUT) ........................................................................................................................ 5 1.2. HOST SYSTEM CONFIGURATION LIST AND DETAILS .......................................................................................... 5 1.3 EUT CONFIGURATION .......................................................................................................................................... 6 1.4. EXTERNAL I/O CABLE ......................................................................................................................................... 6 1.5. DESCRIPTION OF TEST FACILITY ........................................................................................................................ 6 1.6. STATEMENT OF THE MEASUREMENT UNCERTAINTY .......................................................................................... 7 1.7. MEASUREMENT UNCERTAINTY ........................................................................................................................... 7 1.8. DESCRIPTION OF TEST MODES .......................................................................................................................... 7 1.9. FREQUENCY OF CHANNELS ................................................................................................................................ 7 2. TEST METHODOLOGY ......................................................................................................................................... 8 2.1. EUT CONFIGURATION......................................................................................................................................... 8 2.2. EUT EXERCISE ................................................................................................................................................... 8 2.3. GENERAL TEST PROCEDURES ........................................................................................................................... 8 3. SYSTEM TEST CONFIGURATION ...................................................................................................................... 9 3.1. JUSTIFICATION..................................................................................................................................................... 9 3.2. EUT EXERCISE SOFTWARE ................................................................................................................................ 9 3.3. SPECIAL ACCESSORIES ...................................................................................................................................... 9 3.4. BLOCK DIAGRAM/SCHEMATICS........................................................................................................................... 9 3.5. EQUIPMENT MODIFICATIONS .............................................................................................................................. 9 3.6. TEST SETUP ........................................................................................................................................................ 9 4. SUMMARY OF TEST RESULTS ........................................................................................................................ 10 5. TEST RESULT ....................................................................................................................................................... 11 5.1. ON TIME AND DUTY CYCLE ........................................…

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Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASUD-HMRBT TEST SETUP PHOTOS OF THE EUT Radiated Emission Below 1GHz Radiated Emission Above 1GHz