Q2O-CSR8675Bluetooth Module

CSR8675 Bluetooth Module operating/installation instruction Product Description: Bluetooth Module Model / HVIN: CSR8675 The module device FCC ID: Q2O‐CSR8675 / IC: 152B‐CSR8675 General Description : CSR8675 modular audio platform for wired and wireless applications integrates an ultra‑low‑ power. DSP and application processor with embedded flash memory, a high‐performance stereo codec, a power management subsystem, LED and LCD drivers and capacitive touch sensor inputs in a SoC IC. Applications : High‐end wired/wireless stereo headphones High‐end wired/wireless stereo headsets High‐end wired/wireless active headsets Wireless stereo speakers Low‐end docking stations and soundbars Gaming headsets Device Detail Bluetooth low energy Dual‑mode B luetooth low energy radio Support for Bluetooth basic rate / EDR and low energy connections 3 Bluetooth low energy connections at the same time as basic rate A2DP Bluetooth Radio On‑chip balun (50 Ω impedance in TX and RX modes) No external trimming is required in production Bluetooth v4.1 specification software/hardware Bluetooth Transmitter Typical RF transmit power 6‑bit DAC level control Class 1, Class 2 and Class 3 support without the need for an external power amplifier or TX/RX switch Bluetooth Receiver Integrated channel filters Digital demodulator for improved sensitivity and co‑channel rejection Real‑time digitised RSSI available to application Fast AGC for enhanced dynamic range Channel classification for AFH 1.1 List of applicable FCC rules/RSS: The module complies with FCC Part 15.249/15.247/RSS-210 Issue 10/RSS-247 Issue 2 1.2 Summarize the specific operational use conditions: The module has been certified for Mobile applications. This transmitter must not be collocated or operating in conjunction with any other antenna or transmitter The manual provides guidance to the host manufacturer will be included in the documentation that will be provided to the OEM. The OEM integrators, host manufacturers are responsible for ensuring that the end-user has no manual or instructions to remove or install module. Important notes to third party user, host manufacturer for transceiver module: The transceiver Module complies with Part15 of the FCC rules and regulations. Compliance with the labeling requirements, FCC notices and antenna usage guidelines is required. To fulfill FCC Certification, the third-party user must comply with the following regulations: 1. The third-party user must ensure that the text on the external label provided with this device is placed on the outside of the final product. Contains FCC ID: Q2O-CSR8675 (example) / IC: 152B-CSR8675 (example) .The enclosed 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. 2. The transceiver Module may only be used with the antenna (internal, integral) that have been tested and approved for use with this module. 3. The transmitter is certified as a module, it may be integrated or used inside another device (host). No further approval is required when the module is used in accordance with the FCC grant conditions, and any limitations or usage conditions required by the manufacturer's instructions. Modifications not approved by grantee could void the user's authority to operate the equipment. 4. This device and its antenna must not be co-located or operating in conjunction with any other antenna or transmitter. 5. Third party users, host manufacturer must test final product to comply with unintentional radiators before declaring compliance of their final product to Part 15 of the FCC Rules. 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. FCC Statement 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. Warning: Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 1.3 Limited module procedures Not Applicable. 1.4 Trace Antenna Designs: Not Applicable. 1.5 RF exposure considerations: The module has been certified for Mobile applications. End-user product Manual shall contain below RF exposure statements. This module complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body.". The antenna(s) used for this transmitter must not be collocated or operating in conjunction with any other antenna or transmitter. If RF exposure statements and use conditions are not provided, then the host product manufacturer is require…

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Lenbrook Industries Limited 633 Granite Court, Pickering, Ontario L1W 3K1 (905) 831-6333 Fax: (905) 831-6936 Date : 22 April, 2022 Attention: Application Examiner Re: Request for confidentiality Applicant: Lenbrook Industries Limited FCC ID: Q2O-CSR8675 To whom it may concern, Permanent Confidentiality Request is hereby submitted by Lenbrook Industries Limited to withhold permanently from public review certain portions of the application for equipment certification for the referenced FCC identifiers. This request for confidentiality is made pursuant to 47 CFR 0.457(d) & 0.459 of the FCC Rules. In particular, the following sections of the application are to be kept permanently confidential: • Schematics • Detailed Block diagrams • Detailed Operational/Functional Description Short-term Confidentiality Request is hereby submitted by Lenbrook Industries Limited to withhold from public review for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing, certain portions of the application for equipment certification for the referenced FCC identifiers. This request for confidentiality is made pursuant to 47 CFR 0.457(d) & 0.459 of the FCC Rules. In particular, the following sections of the application are to be kept confidential for a period of 180 days from the date of Authorization: • Test setup photos • External photos • Internal photos • User manual Lenbrook Industries Limited 633 Granite Court, Pickering, Ontario L1W 3K1 (905) 831-6333 Fax: (905) 831-6936 Rationale for request for confidentiality: Lenbrook Industries Limited has invested considerable time and materials in research and development to produce the referenced product. [Permanent confidentiality: Disclosure of the permanently confidential portions of this application to competitors would not only give them significant competitive advantages in developing similar products, but would also disclose successful implementation of unpublished, leading edge technology developed by us.][Short term confidentiality: Disclosure of the short-term confidential portions of this application during the period of importation and/or distribution would reveal key aspects of proprietary technology to competitors and diminish the value of our investment in research and development.] [For FCC certification; delete for TCB certification: The fee for confidentiality has been submitted along with the fee for certification.] If you have questions or need further information, please contact the undersigned. Sincerely, Taresh Vadgama VP, Product Development & Manufacturing Lenbrook Industries Limited Lenbrook Industries Limited 633 Granite Court, Pickering, Ontario L1W 3K1 (905) 831-6333 Fax: (905) 831-6936

Lenbrook Industries Limited 633 Granite Court, Pickering, Ontario L1W 3K1 (905) 831-6333 Fax: (905) 831-6936 Modular Approval Request Letter Date: 21 April, 2022 Dear Application Examiner, Lenbrook Industries Limited, FCC ID: Q2O-CSR8675 would like to have your authorization as a modular approval. The requirements of Public Notice DA00-1407 have been met and shown on the following statements. Items to be covered Answer from applicant 1.The modular transmitter must have its own RF shielding.The RF portions of the module are completely contained within a metal shielding can. The modules does not depend on any other shielding 2.The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with Part 15 requirements under conditions of excessive data rates or over-modulation. All inputs to the module are buffered through logic or microprocessor inputs 3. The modular transmitter must have its own power supply regulation. The modular transmitter has its own power supply regulation. 4. The modular transmitter must comply with the antenna requirements of Section 15.203 and 15.204(c). The antenna must either be permanently attached or employ a “unique” antenna coupler (at all connections between the module and the antenna, including the cable). The module and antenna design is not user serviceable. It utilizes non-standard micro-coaxial connectors and antennas with approximate gain of 2 dBi. 5. The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing. This is intended to demonstrate that the module is capable of complying with Part 15 emission limits regardless of the device into which it is eventually installed. The EUT was tested stand-alone with a test-jig. Please refer to setup configuration photos. 6. The modular transmitter must be labeled with its own FCC ID number, and, if the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains Transmitter Module FCC ID: XYZMODEL1” or “Contains FCC ID: XYZMODEL1.” Any similar wording that expresses the same meaning may be used. The Grantee may either provide such a label, an example of which must be included in the application for equipment authorization, or, must provide adequate instructions along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the application for equipment authorization. The FCC ID label format is included in the filing. The product will always be inside another enclosure during actual use. A label will be placed on the outside of the product if the FCC ID is not visible. Lenbrook Industries Limited 633 Granite Court, Pickering, Ontario L1W 3K1 (905) 831-6333 Fax: (905) 831-6936 7. The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. A copy of these instructions must be included in the application for equipment authorization. For example, there are very strict operational and timing requirements that must be met before a transmitter is authorized for operation under Section 15.231. For instance, data transmission is prohibited, except for operation under Section 15.231(e), in which case there are separate field strength level and timing requirements. Compliance with these requirements must be assured. The module complies with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee. Please refer to report and user manual. 8. The modular transmitter must comply with any applicable RF exposure requirements. For example, FCC Rules in Sections 2.1091, 2.1093 and specific Sections of Part 15, including 15.319(i), 15.407(f), 15.253(f) and 15.255(g), require that Unlicensed PCS, UNII and millimeter wave devices perform routine environmental evaluation for RF Exposure to demonstrate compliance. In addition, spread spectrum transmitters operating under Section 15.247 are required to address RF Exposure compliance in accordance with Section 15.247(b)(4). Modular transmitters approved under other Sections of Part 15, when necessary, may also need to address certain RF Exposure concerns, typically by providing specific installation and operating instructions for users, installers and other interested parties to ensure compliance. The transmitter meets the requirements. Date: April 25, 2022 __________________ By Printed Name: Taresh Vadgama __________________ Title: VP, Product Development & Manufacturing __________________

INTERTEK TESTING SERVICE Report No.: HK22030299 Equipment Photographs (External)

INTERTEK TESTING SERVICE Report No.: HK22030299 Equipment Photographs (Internal)

INTERTEK TESTING SERVICE FCC ID: Q2O-CSR8675 IC: 152B-CSR8675 MPE Analysis Report The Equipment-Under-Test (EUT) CSR8675 is Bluetooth Module. The EUT is powered by 5VDC. The EUT only use one type of antenna that has been tested with this module The antenna is permanently attached, can’t be replaced Antenna Type: Integral Antenna Gain: 2dBi For Maximum Permissible Exposure (MPE) evaluation of the unit, the maximum power density at 20 cm from this transmitter shall be less than the General Population / Uncontrolled MPE limit in OET Bulletin 65 and meet the requirement listed in KDB447498. 1) For the Bluetooth portion of the unit, the measured powers among all the measured c hannels were within its production tolerance. The antenna gain is 2 dBi = 1.58 (num gain) and its maximum source-based time-averaging duty factor is 100%. From these data and its operating configuration, the exposed power density at a distance (R) of 20 cm from the center of radiation of the antenna can be calculated according to OET Bulletin 65 as follow: The EIRP radiated power = 10dBm + 2dBi = 12 dBm (15.85 mW) The radiated (EIRP) source-based time-averaging output power = (15.85 * 1) mW = 15.85 mW The power density at 20 cm = 15.85 / 4πR 2 = 0.0032 mW cm -2

2/F., Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong SAR, China. Telephone: (852) 2173 8888 Facsimile: (852) 2785 5487 www.intertek.com Intertek’s standard Terms and Conditions can be obtained at our website http://www.intertek.com/terms/. The test report only allows to be revised within the retention period unless further standard or the requirement was noticed. This report is for the exclusive use of Intertek's Client and is provided pursuant to the agreement between Intertek and its Client. Intertek's responsibility and liability are limited to the terms and conditions of the agreement. Intertek assumes no liability to any party, other than to the Client in accordance with the agreement, for any loss, expense or damage occasioned by the use of this report. Only the Client is authorized to permit copying or distribution of this report and then only in its entirety. Any use of the Intertek name or one of its marks for the sale or advertisement of the tested material, product or service must first be approved in writing by Intertek. The observations and test results in this report are relevant only to the sample tested. This report by itself does not imply that the material, product, or service is or has ever been under an Intertek certification program. © 2017 Intertek Page 1 of 36 TEST REPORT Report Number: 22030299HKG-001 Application for Original Grant of 47 CFR Part 15 Certification Single New of RSS-247 Issue 2 Equipment Modular Approval FCC ID: Q2O-CSR8675 IC: 152B-CSR8675 Prepared and Checked by: Approved by: Signed On File Wong Cheuk Ho, Herbert Lead Engineer Wong Kwok Yeung, Kenneth Assistant Supervisor Date: April 26, 2022 TEST REPORT Lenbrook Industries Limited Intertek Report No: 22030299HKG-001 Page 2 of 36 GENERAL INFORMATION Applicant Name: Lenbrook Industries Limited Applicant Address: 633 Granite Court, Pickering, ON, L1W 3K1, Canada. FCC Specification Standard: FCC Part 15, October 1, 2020 Edition FCC ID: Q2O-CSR8675 FCC Model(s): CSR8675 IC Specification Standard: RSS-247 Issue 2, February 2017 RSS-Gen Issue 5 Amendment 2, February 2021 IC: 152B-CSR8675 PMN: Bluetooth Module HVIN: CSR8675 Type of EUT: Spread Spectrum Transmitter Description of EUT: Bluetooth Module Serial Number: 90-56-82-D1-23-75 Sample Receipt Date: March 20, 2022 Date of Test: March 20, 2022 to April 18, 2022 Report Date: April 26, 2022 Environmental Conditions: Temperature: +10 to 40°C Humidity: 10 to 90% Conclusion: Test was conducted by client submitted sample. The submitted sample as received complied with the 47 CFR Part 15 / RSS-247 Issue 2 Certification. TEST REPORT Lenbrook Industries Limited Intertek Report No: 22030299HKG-001 Page 3 of 36 TABLE OF CONTENTS 1.0 TEST RESULTS SUMMARY & STATEMENT OF COMPLIANCE ............................................ 4 1.1 Summary of Test Results ................................................................................................. 4 1.2 Statement of Compliance ................................................................................................ 4 2.0 GENERAL DESCRIPTION ................................................................................................ 5 2.1 Product Description ....................................................................................................... 5 2.2 Test Methodology ........................................................................................................... 6 2.3 Test Facility ..................................................................................................................... 6 2.4 Related Submittal(s) Grants ............................................................................................ 6 3.0 SYSTEM TEST CONFIGURATION .................................................................................... 7 3.1 Justification ..................................................................................................................... 7 3.2 EUT Exercising Software .................................................................................................. 8 3.3 Details of EUT and Description of Accessories ................................................................. 9 3.4 Measurement Uncertainty .............................................................................................. 9 4.0 TEST RESULTS ............................................................................................................ 10 4.1 Maximum Conducted Output Power at Antenna Terminals ......................................... 10 4.2 Minimum 6dB RF Bandwidth......................................................................................... 11 4.3 Maximum Power Spectral Density ................................................................................ 14 4.4 Out of Band Conducted Emissions ................................................................................ 17 4.5 Field Strength Calculation.............................................................................................. 23 4.6 Transmitter Radiated Emissions in Restricted Bands and Spurious Emissions ............... 24 4.6.1 Radiated Emission Configuration Photograph ............................................................ 24 4.6.2 Radiated Emission Data .............................................................................................. 24 4.6.3 Radiated Emission Test Setup ..................................................................................... 29 4.6.4 Transmitter Duty Cycle Calculation ............................................................................ 30 4.7 AC Power Line Conducted Emission .............................................................................. 31 4.7.1 AC Power Line Conducted Emission Configuration Photograph ................................. 31 4.7.2 AC Power Line Conducted Emission Data ................................................................... 31 4.7.3 Conducted Emissio…

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INTERTEK TESTING SERVICE Report No: HK22030299 Configuration Photographs Worst-Case Radiated Emissions (Front View) INTERTEK TESTING SERVICE Report No: HK22030299 Configuration Photographs Worst-Case Radiated Emissions (Rear View)

INTERTEK TESTING SERVICE Report No: HK22030299 Configuration Photographs Worst-Case Radiated Emissions (Front View) INTERTEK TESTING SERVICE Report No: HK22030299 Configuration Photographs Worst-Case Radiated Emissions (Rear View)

INTERTEK TESTING SERVICE Report No: HK22030299 i Configuration Photographs Worst-Case Line-Conducted Emissions (Front View) INTERTEK TESTING SERVICE Report No: HK22030299 ii Configuration Photographs Worst-Case Line-Conducted Emissions (Rear View) INTERTEK TESTING SERVICE Report No: HK22030299 iii Configuration Photographs Worst-Case Line-Conducted Emissions (Side View)