2BH7O-BT01Zan yang Bluetooth receiver

Instructions This is a small Bluetooth module with a model of ZY‐BT01. The input voltage is DC12V. It is compatible with all Bluetooth versions below. After the power‐on point, the Bluetooth indicator flashes and follows the mobile phone. The tablet computer or other emitters are Bluetooth matched. After the matching is completed, the indicator light will always be packaged in a normally on state. At this time, audio can be transmitted to the ZY‐BT01 Bluetooth module through the emitter. The module then transmits audio to the speaker through the audio function. FC C warning 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, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not e xpressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 equipmen t 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 be tween 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 complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be colocated or operating in conjunction with any other antenna or transmitter. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

Shenzhen Caichi Technology Co., Ltd Add: 2/F,41 Huangma Bu Industrial Street,Xixiang,Bao'an District, Shenzhen, China Tel: 86+13423821688 Email: [email protected] Attestation Letter Date: 2024-08-30 FED ERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear S ir or Madam: Our product Zan y ang Bluetooth receiver, model: ZY-BT01, ZY-BT01-1, ZY-BT01-2, ZY-BT01-3, ZY-BT01-4, ZY-BT01-5, ZY-BT01-6, ZY-BT01-7, ZY-BT01-8, ZY-BT01-9, ZY-BT01-10, FCC ID:2BH7O-BT01, for marketing purpose, this product only supports BT(GFSK, π/4-DQPSK, 8 DPSK). The other functions, bands and modes was disabled to use by manufacturer in the software, the end user has no capability to activate it. Sincerely, Printed Name: Mr huang xiaodong Title: Manager

Shenzhen Caichi Technology Co., Ltd Add: 2/F,41 Huangma Bu Industrial Street,Xixiang,Bao'an District, Shenzhen, China Tel: 86+13423821688 Email: [email protected] CFR 47 §2.911(d)(5)(i)(ii) Attestation Letter Attestation Letter Date: 2024-08-30 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i)(ii) Filing FCC ID:2BH7O-BT01 Shenzhen Caichi Technology Co., Ltd certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Shenzhen Caichi Technology Co., Ltd certifies that as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, Signature Printed Name: Mr huang xiaodong Title: Manager

CFR 47 §2.911(d)(7) U.S Agent U.S. AGENT LETTER OF ATTESTATION Date: 2024-08-30 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID:2BH7O-BT01 Shenzhen Caichi Technology Co., Ltd (“the Applicant”) certifies that, as of the date of the filing of the application, Electrical Connection (U.S. agent). is our designated U.S. agent for service of process for the above referenced FCC ID. Shenzhen Caichi Technology Co., Ltd (“the Applicant”) accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Electrical Connection (U.S. agent) accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Company Name: Electrical Connection Address: 3300 rifle range rd, suite a,Knoxville,Tennessee,United States of America,37918 FRN:N/A Tel.: 1-865-2199192 Email: [email protected] Signed by (printed name): Lorissa Haley Signature: Company Name: Shenzhen Caichi Technology Co., Ltd Address: 2/F,41 Huangma Bu Industrial Street,Xixiang,Bao'an District, Shenzhen, China FRN: 0035788777 Tel.: 86+13423821688 Email: [email protected] Signed by (printed name): Mr huang xiaodong Signature:

QA-FR-170-B Shenzhen Caichi Technology Co., Ltd Add: 2/F,41 Huangma Bu Industrial Street,Xixiang,Bao'an District, Shenzhen, China Tel: 86+13423821688 Email: [email protected] FCC Authorization Date: 2024-08-30 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We , Shenzhen Caichi Technology Co., Ltd, Hereby authorizes Bay Area Compliance Laboratories Corp.(Dongguan) to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratory Corp.(Dongguan) on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Client’s signature Printed Name: Mr huang xiaodong Title: Manager

QA -FR-171-A Shenzhen Caichi Technology Co., Ltd Add: 2/F,41 Huangma Bu Industrial Street,Xixiang,Bao'an District, Shenzhen, China Tel: 86+13423821688 Email: [email protected] FCC Confidential Authorization Date: 2024-08-30 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID:2BH7O-BT01 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Shenzhen Caichi Technology Co., Ltd hereby requests long-term confidential treatment of information accompanying this application as outlined below: •Block Diagram •Schematics •Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely, Signature: P rinted Name: Mr huang xiaodong Title: Manager

Shenzhen Caichi Technology Co., Ltd Add: 2/F,41 Huangma Bu Industrial Street,Xixiang,Bao'an District, Shenzhen, China Tel: 86+13423821688 Email: [email protected] DECLARATION OF SIMILARITY Date: 2024-08-30 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam: We, Shenzhen Caichi Technology Co., Ltd, hereby declare that the product: Zan yang Bluetooth r eceiver, FCC ID:2BH7O-BT01. model: ZY-BT01-1, ZY-BT01-2, ZY-BT01-3, ZY-BT01-4, ZY- BT01-5, ZY-BT01-6, ZY-BT01-7, ZY-BT01-8, ZY-BT01-9, ZY-BT01-10 are electrically identical with the mo del: ZY-BT01 which was tested by Bay Area Compliance Laboratories Corp.(Dongguan) A description of the differences between those models and that are declared similar areas follows: They are the same product, and just the different model name and distribution channel, the rest are the same. Please contact me should there be need for any additional clarification or information. Best Regards, Signature: Printed Name: Mr huang xiaodong Title: Manager

Bay Area Compliance Laboratories Corp. (Dongguan) EXHIBIT No.: 2402W55794E-RF-EXP Page 1 / 3 EUT EXTERNAL PHOTOS Bay Area Compliance Laboratories Corp. (Dongguan) EXHIBIT No.: 2402W55794E-RF-EXP Page 2 / 3 Bay Area Compliance Laboratories Corp. (Dongguan) EXHIBIT No.: 2402W55794E-RF-EXP Page 3 / 3

Bay Area Compliance Laboratories Corp. (Dongguan) EXHIBIT No.: 2402W55794E-RF-INP Page 1 / 3 EUT INTERNAL PHOTOS Bay Area Compliance Laboratories Corp. (Dongguan) EXHIBIT No.: 2402W55794E-RF-INP Page 2 / 3 Antenna Bay Area Compliance Laboratories Corp. (Dongguan) EXHIBIT No.: 2402W55794E-RF-INP Page 3 / 3

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: 2402W55794E-RF-00 Report Template Version: FCC-BT-V1.2 Page 52 of 52 EXHIBIT C - RF EXPOSURE EVALUATION Maximum Permissible Exposure (MPE) Applicable Standard According to subpart §1.1310,15.247(i) systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for Maximum Permissible Exposure (MPE) (§1.1310, §2.1091) (B) Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f²) 30 30–300 27.5 0.073 0.2 30 300–1500 / / f/1500 30 1500–100,000 / / 1.0 30 f = frequency in MHz; * = Plane-wave equivalent power density; According to §1.1310 and §2.1091 RF exposure is calculated. Calculation formula: Prediction of power density at the distance of the applicable MPE limit S = PG/4R² = power density (in appropriate units, e.g. mW/cm 2 ); P = power input to the antenna (in appropriate units, e.g., mW); G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain; R = distance to the center of radiation of the antenna (appropriate units, e.g., cm); Calculated Data: Mode Frequency (MHz) Antenna Gain Conducted output power including Tune-up Tolerance Evaluation Distance (cm) Power Density (mW/cm 2 ) MPE Limit (mW/cm 2 ) (dBi) (numeric)(dBm)(mW) BT 2402-2480-0.58 0.87 21.58 20.00 0.0003 1.0 Note: The Conducted output power including Tune-up Tolerance provided by manufacturer. Result: The device meet FCC MPE at 20 cm distance ***** END OF REPORT *****

Inverted F Antenna Specification Summary ITEMANT SPEC Model Name 2.4G ANT HorizontalVertical 2400MHz 2450MHz 2500MHz2400MHz 2450MHz 2500MHz Center Frequency -1.26dBi -0 .76dBi -0.58dBi -5.25dBi -2 .46dBi -1.86dBi MAX. Gain -0.58dBi PolarizationHorizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) 333 Kexing Road, Xiangzhou District, Zhuhai City, Guangdong, China Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain(dBi) Frequency (MHz) MaxMinAvg 2400-1.26174-30.0801-7.18716 2450-0.765802-36.5604-7.48023 2500-0.585582-22.0315-6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dBi) Frequency (MHz) MaxMinAvg 2400-5.2537-22.1424-12.4294 2450-2.4652-24.5837-10.4702 2500-1.86120-29.5214-9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

TEST REPORT Applicant: Shenzhen Caichi Technology Co., Ltd Address: 2/F,41 Huangma Bu Industrial Street,Xixiang,Bao'an District, Shenzhen, China P r o d u c t N a m e : Zan yang Bluetooth receiver F C C I D : 2BH7O-BT01 Standard(s): 47 CFR Part 15, Subpart C(15.247) ANSI C63.10-2013 KDB 558074 D01 15.247 Meas Guidance v05r02 Report Number: 2402W55794E-RF-00 Report Date: 2024/8/31 The above device has been tested and found compliant with the requirement of the relative standards by Bay Area Compliance Laboratories Corp. (Dongguan). Reviewed By: Gavin Xu Approved By: Ivan Cao Title: RF Engineer Title: EMC Manager Bay Area Compliance Laboratories Corp. (Dongguan) No.12, Pulong East 1 st Road, Tangxia Town, Dongguan, Guangdong, China Tel: +86-769-86858888 Fax: +86-769-86858891 www.baclcorp.com.cn Note: The information marked ▲ is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report cannot be reproduced except in full, without prior written approval of the Company. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report may contain data that are not covered by the accreditation scope and shall be marked with ★.This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the U.S. Government. Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: 2402W55794E-RF-00 Report Template Version: FCC-BT-V1.2 Page 2 of 52 CONTENTS DOCUMENT REVISION HISTORY ································································ 4 1. GENERAL INFORMATION ······································································· 5 1.1 GENERAL DESCRIPTION OF EQUIPMENT UNDER TEST ················································ 5 1.2 ACCESSORY INFORMATION ················································································· 5 1.3 ANTENNA INFORMATION DETAIL▲ ······································································ 5 1.4 EQUIPMENT MODIFICATIONS ·············································································· 5 2. SUMMARY OF TEST RESULTS ································································· 6 3. DESCRIPTION OF TEST CONFIGURATION ················································ 7 3.1 OPERATION FREQUENCY DETAIL ········································································· 7 3.2 EUT OPERATION CONDITION ·············································································· 7 3.3 SUPPORT EQUIPMENT LIST AND DETAILS ······························································· 7 3.4 SUPPORT CABLE LIST AND DETAILS ······································································ 7 3.5 BLOCK DIAGRAM OF TEST SETUP ········································································· 8 3.6 TEST FACILITY ································································································ 9 3.7 MEASUREMENT UNCERTAINTY ············································································ 9 4. REQUIREMENTS AND TEST PROCEDURES ············································· 10 4.1 AC LINE CONDUCTED EMISSIONS ······································································· 10 4.1.1 Applicable Standard ······························································································ 10 4.1.2 EUT Setup·········································································································· 11 4.1.3 EMI Test Receiver Setup ························································································· 11 4.1.4 Test Procedure ····································································································· 12 4.1.5 Corrected Amplitude & Margin Calculation ··································································· 12 4.1.6 Test Result ········································································································· 12 4.2 RADIATED SPURIOUS EMISSIONS ········································································ 13 4.2.1 Applicable Standard ······························································································ 13 4.2.2 EUT Setup·········································································································· 13 4.2.3 EMI Test Receiver & Spectrum Analyzer Setup ······························································ 15 4.2.4 Test Procedure ····································································································· 15 4.2.5 Corrected Result & Margin Calculation ········································································ 15 4.2.6 Test Result ········································································································· 15 4.3 20 DB EMISSION BANDWIDTH ············································································ 16 4.3.1 Applicable Standard ······························································································ 16 4.3.2 EUT Setup·········································································································· 16 4.3.3 Test Procedure ····································································································· 16 4.3.4 Test Result ········································································································· 17 4.4 CHANNEL SEPARATION ···················································································· 18 4.4.1 Applicable Standard ······························································································ 18 4.4.2 EUT Setup·································································…

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Bay Area Compliance Laboratories Corp. (Dongguan) EXHIBIT No.: 2402W55794E-RF-00-TSP TEST SETUP PHOTOGRAPHS Radiated Emission 9k-30MHz Parallel View Radiated Emission 9k-30MHz Perpendicular View Bay Area Compliance Laboratories Corp. (Dongguan) EXHIBIT No.: 2402W55794E-RF-00-TSP Radiated Emission 9k-30MHz Ground-parallel View Radiated Emission 30M-1GHz View Bay Area Compliance Laboratories Corp. (Dongguan) EXHIBIT No.: 2402W55794E-RF-00-TSP Radiated Emission 1-18GHz View Radiated Emission 18-25GHz View Bay Area Compliance Laboratories Corp. (Dongguan) EXHIBIT No.: 2402W55794E-RF-00-TSP Radiated Emission Above 1GHz View