FCC ID: BEJ-WL1SB21 Wireless Adapter Card

User Manual PRODUCT NAME : Wireless audio Module MODEL NAME : WL1SB21 The information contained herein is the exclusive property of LG Innotek and shall not be distributed, reproduced or disclosed in whole or no in part without prior written permission of LG Innotek.

(00)-0073 REG. DATE : 2021.02.22 User Manual REV.NO : 1.0 REV. DATE : 2021.02.22 WL1SB21 (LGE) PAGE :

1 / 8 MODEL : ETWADYEC02(LGIT) Table of Contents No. Description Page 1 2 3 4 5 6 7 8 9 Features Module Photo Block Diagram Storage Conditions Operating Conditions Interface Specification Pin Description Outline Drawing Packing Information 2 2 3 4 4 5 6 7 8 2021 LGIT. All rights reserved. REG. DATE : 2021.02.22 User Manual REV.NO : 1.0 REV. DATE : 2021.02.22 WL1SB21 (LGE) PAGE :

2 / 8 MODEL : ETWADYEC02(LGIT) 1. Features ETWADYEC02 is the small size and low power module for Wireless Audio. ETWADYEC02 is based on Syncomm IA9QH. 5.2/5.8GHz GFSK Modulation Size : 35mm x 35mm x 5.03 mm Internal PCB Printed Antenna I2S digital audio interface I2C control with external device Low audio delay time < 20ms Application : Wireless Speaker, Woofer, TV Theater 2. Module Photo

<Top view>

<Bottom view>

2021 LGIT. All rights reserved. REG. DATE : 2021.02.22 User Manual REV.NO : 1.0 REV. DATE : 2021.02.22 WL1SB21 (LGE) PAGE :

3 / 8 MODEL : ETWADYEC02(LGIT) 3. Block Diagram 2021 LGIT. All rights reserved. REG. DATE : 2021.02.22 User Manual REV.NO : 1.0 REV. DATE : 2021.02.22 WL1SB21 (LGE) PAGE :

4 / 8 MODEL : ETWADYEC02(LGIT) 4. Storage Conditions Parameter Storage Temperature Storage Humidity (@ 40) Min

-10

Max

+80 90 Unit

Caution : The specifications above the Table define levels at which permanent damage to the device can occur. Function operation is not guaranteed under these conditions. Operating at absolute maximum conditions for extend periods can adversely affect the long-term reliability of the device. Other conditions 1) Do not use or store modules in the corrosive atmosphere, especially where chloride gas, sulfide gas, acid, alkali, salt or the like are contained. Also, avoid exposure to moisture. 2) Store the modules where the temperature and relative humidity do not exceed 5 to 40 and 20 to 60%. 5. Operating Conditions Parameter Min Typ Ambient Temperature Operating Humidity (40) 0

Supply Voltage 3.15 3.3 Max

+60 85 3.45 Unit

Vdc 2021 LGIT. All rights reserved. REG. DATE : 2021.02.22 User Manual REV.NO : 1.0 REV. DATE : 2021.02.22 WL1SB21 (LGE) PAGE :

5 / 8 MODEL : ETWADYEC02(LGIT) 6. Interface Specification 1) I2S Timing 2021 LGIT. All rights reserved. REG. DATE : 2021.02.22 User Manual REV.NO : 1.0 REV. DATE : 2021.02.22 WL1SB21 (LGE) PAGE :

6 / 8 MODEL : ETWADYEC02(LGIT) 7. Pin Description Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 I/O Pin Description Pin Name PWR VCC supply VCCIO GND Ground GND GND Ground GND I/O GPIO BLUE_LED I/O GPIO RED_LED GND Ground GND I/O Data pin of I2S signal I2S_DATA_B I2S_DATA_A I/O Data pin of I2S signal GND Ground I/O Clock pin I2C control signal I/O Data pin I2C control signal I/O Data input pin of SPI interface I/O Data out pin of SPI interface GND I2C_CLK I2C_DATA SPI_DI SPI_DO Pin No. 14 15 16 17 18 19 20 21 22 23 24 25 26 Reset pin, low active I/O Pin Description Pin Name I/O Clock pin of SPI interface SPI_CLK I/O Chip select pin of SPI interface SPI_CS I/O Write protect pin of SPI interface, low active SPI_WP I RESET I/O GPIO P_SENSE I/O GPIO P_CTL I/O GPIO PWM_RST I/O GPIO AMP_PDN I/O GPIO AMP_SD PARING_SW I/O GPIO I2S_BCK GNS I2S_LRCK I/O BCK pin of I2S signal GND Ground I/O LRCK pin of I2S

< TOP View > < Bottom View >

Note. 1) Recommend a Module install sequence for prevent operation failure

- Supply 3.3V power 2) Connector: 26Pin SMD Connector A 2021 LGIT. All rights reserved. REG. DATE : 2021.02.22 User Manual REV.NO : 1.0 REV. DATE : 2021.02.22 WL1SB21 (LGE) PAGE :

7 / 8 MODEL : ETWADYEC02(LGIT) 8. Outline Drawing 2021 LGIT. All rights reserved. REG. DATE : 2021.02.22 User Manual REV.NO : 1.0 REV. DATE : 2021.02.22 WL1SB21 (LGE) PAGE :

8 / 8 MODEL : ETWADYEC02(LGIT) 9. Packing Information 2021 LGIT. All rights reserved. REG. DATE : 2021.02.22 User Manual REV.NO : 1.0 REV. DATE : 2021.02.22 WL1SB21 (LGE) PAGE :

9 / 8 MODEL : ETWADYEC02(LGIT)

<Regulatory notice>

FCC Statement FCC Part 15.19 Statements:

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 Part 15.105 statement (Class B) 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 Part 15.21 statement Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. Responsible Party Information Supplier's Declaration of Conformity47 CFR 2.1077 Compliance Information Responsible Party U.S. Contact Information LG Electronics USA 1000 Sylvan Avenue Englewood Cliffs New Jersey, United States, 07632 Telephone number or internet contact information 2021 LGIT. All rights reserved. REG. DATE : 2021.02.22 User Manual REV.NO : 1.0 REV. DATE : 2021.02.22 WL1SB21 (LGE) PAGE :

10 / 8 MODEL : ETWADYEC02(LGIT) Regulatory notice to host manufacturer according to KDB 996369 D03 OEM Manual v01>

List of applicable FCC rules This module has been granted modular approval as below listed FCC rule parts.

-FCC Rule parts 15C(15.407) Summarize the specific operational use conditions

-The OEM integrator should use equivalent antennas which is the same type and equal or less gain then an antenna listed below. RF exposure considerations The module has been certified for integration into products only by OEM integrators under the following condition:

-The antenna(s) must be installed such that a minimum separation distance of at least 20 cm is maintained betweenthe radiator (antenna) and all persons at all times.

-The transmitter module must not be co-located or operating in conjunction with any other antenna or transmitterexcept in accordance with FCC multi-transmitter product procedures.

-Mobile use As long as the three conditions above are met, further transmitter testing will not be required. OEM integrators should provide the minimum separation distance to end users in their end-product manuals. Antennas list This module is certified with the following integrated antenna.

-Type: Metal antenna (Internal Antenna)

-Max. peak Antenna gain Frequency Band Ant 1 Ant 2 UNII-1 (5155-5245) 1.47dBi 1.36dBi UNII-3 (5730-5845) 1.39dBi 1.45dBi Any new antenna type, higher gain than listed antenna should be met the requirements of FCC rule 15.203 and 2.1043 as permissive change procedure. Label and compliance informationEnd Product Labeling The module is labeled with its own FCC ID and IC Certification Number. If the FCC ID and IC Certification Number are 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. In that case, the final end product must be labeled in a visible area with the following: Contains FCC ID: BEJ-WL1SB21 Contains IC: 2703H-WL1SB21 Information on test modes and additional testing requirements-OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, additional transmitter in the host, etc.). Additional testing, Part 15 Subpart B disclaimer-The final host product also requires Part 15 subpart B compliance testing with the modular transmitter installed to be properly authorized for operation as a Part 15 digital device. 2021 LGIT. All rights reserved. REG. DATE : 2021.02.22 User Manual REV.NO : 1.0 REV. DATE : 2021.02.22 WL1SB21 (LGE) PAGE :

11 / 8 MODEL : ETWADYEC02(LGIT) 2. ISED RSS-GEN, Sec. 7.1.3(licence-exempt radio apparatus) This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions:

(1) this device may not cause interference, and

(2) this device must accept any interference, including interference that may cause undesiredoperation of the device. Le prsent appareil est conforme aux CNR dIndustrie Canada applicables aux appareils radio exempts de licence. Lexploitation est autorise aux deux conditions suivantes :

(1) lappareil ne doit pas produire de brouillage, et

(2) lutilisateur de lappareil doit accepter tout brouillage radiolectrique subi, mme si lebrouillage est susceptible den compromettre le fonctionnement. RF Exposure The antenna (or antennas) must be installed so as to maintain at all times a distance minimum of at least 20 cm between the radiation source (antenna) and any individual. This device may not be installed or used in conjunction with any other antenna or transmitter. l'exposition aux RF Lantenne (ou les antennes) doit tre installe de faon maintenir tout instant une distance minimum de au moins 20 cm entre la source de radiation (lantenne) et toute personne physique. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. Attention: Les changements ou modifications de cet appareil non expressment approuv par le fabricant peuvent annuler votre droit utiliser cet quipement. tiquetage du produit final (IC) Le module WL1NB6V2 est tiquet avec sa propre identification ISED et son propre numro de certification IC. Si lidentification ISED et le numro de certification IC ne sont pas visibles lorsque le module est install lintrieur dun autre dispositif, la partie externe du dispositif dans lequel le module est install devra galement prsenter une tiquette faisant rfrence au module inclus. Dans ce cas, le produit final devra tre tiquet sur une zone visible avec les informations suivantes :

Contient module metteur IC : 2703H-WL1SB21 The 5155-5245 MHz band is restricted to indoor use only. 2021 LGIT. All rights reserved.

Date : Nov. 9, 2017 Rev : 2.3 FCC Agent Authorization Letter HACS-F004 FCC Agent Authorization Letter HCT America LLC

(TCB@hctamerica.com) 1726 Ringwood Avenue San Jose, CA 95131 TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 1 of 2 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC Date : Nov. 9, 2017 Rev : 2.3 REVISION TABLE Rev 1.0 2.0 2.1 2.2 2.3 Description of Change Original Release(Obsolete) Updated template(Obsolete) Updated address(Obsolete) Updated address Fixed Typo Agent Date 06/14/2012 10/01/2012 01/10/2014 11/18/2016 11/09/2017 Approved QM QM QM QM QM HACS-F004 FCC Agent Authorization Letter HCT America LLC

(TCB@hctamerica.com) 1726 Ringwood Avenue San Jose, CA 95131 TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 2 of 2 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC LG Electronics USA DATE : Mar 22, 2021 To:

Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD To whom it may concern:

Subject : FCC Agent Authorization Letter for FCC ID : BEJ-WL1SB21 We, the undersigned, hereby authorize HCT CO., LTD. to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by HCT CO., LTD. on our behalf shall have the same effect as acts of our own. 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. 853(a). We recognize that we are still responsible for the terms and conditions outlined in the HCT America Client Services Agreement. This authorization is valid until further written notice from the applicant. Sincerely, Signed by:

(Name / Title) Kyung-Su Han / Director, NA Regulatory and Environmental Affairs

(Email Address) kyungsu.han@lge.com

(Phone number) 1-201-266-2215

(Address) LG Electronics USA, 1000 Sylvan Avenue, Englewood Cliffs, NJ 07632 HACS-F004 FCC Agent Authorization Letter Rev : 2.3

Date : Nov. 09, 2017 Rev : 3.0 FCC Confidentiality Request Letter HACS-F003 FCC Confidentiality Request Letter HCT America LLC

(TCB@hctamerica.com) 1726 Ringwood Avenue San Jose, CA 95131 TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 1 of 2 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC Date : Nov. 09, 2017 Rev : 3.0 REVISION TABLE Rev 1.0 2.0 2.1 2.2 3.0 Description of Change Original Release(Obsolete) Updated template(Obsolete) Updated address(Obsolete) Updated address Updated LTC and STC Confidentiality table Date 06/14/2012 10/01/2012 01/10/2014 11/18/2016 11/09/2017 Approved QM QM QM QM QM HACS-F003 FCC Confidentiality Request Letter HCT America LLC

(TCB@hctamerica.com) 1726 Ringwood Avenue San Jose, CA 95131 TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 2 of 2 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC LG Electronics USA DATE : 3/22/2021 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD SUBJECT: Request for Confidentiality for FCC ID: BEJ-WL1SB21 We hereby request confidential treatment of the information accompanying this application as outlined below:

LONG-TERM AND SHORT-TERM CONFIDENTIAL LIST Description LONG-TERM CONFIDENTIAL SHORT-TERM CONFIDENTIAL

(180 DAYS) Exhibit 1 2 3 4 5 6 7 8 Block Diagram Operational Description Parts List Schematics External Photos Internal Photos Test-Setup Photos Users Manual The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 & 0.459 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Signed by:

(Name / Title) Kyung-Su Han / Director, NA Regulatory and Environmental Affairs

(Email Address) kyungsu.han@lge.com

(Phone number) 1-201-266-2215

(Address) LG Electronics USA, 1000 Sylvan Avenue, Englewood Cliffs, NJ 07632 HACS-F003 FCC Confidentiality Request Letter Rev : 3.0

Date : Jul. 16, 2018 Rev : 3.2 Modular Approval Declaration Letter HACS-F007 Modular Approval Declaration Letter HCT America LLC

(TCB@hctamerica.com) 1726 Ringwood Ave., San Jose, CA 95131 TEL: +1.510.933.8848, Fax: +1.510.933.8849 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC Page 1 of 2 Date : Jul. 16, 2018 Rev : 3.2 REVISION TABLE Rev 1.0 2.0 2.1 3.0 3.1 3.2 Description of Change Original Release(Obsolete) Updated Template(Obsolete) Updated address (Obsolete) Updated Template(Obsolete) Updated Address Changed File Name and Split Files FCC/IC Date Approved 06/14/2012 10/01/2012 01/10/2014 03/30/2015 06/21/2018 7/16/2018 QM QM QM QM QM QM HACS-F007 Modular Approval Declaration Letter HCT America LLC

(TCB@hctamerica.com) 1726 Ringwood Ave., San Jose, CA 95131 TEL: +1.510.933.8848, Fax: +1.510.933.8849 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC Page 2 of 2 LG Electronics USA Date : Mar 22, 2021 FCC Modular Approval Attestation FCC ID: BEJ-WL1SB21 is seeking FCC equipment authorization as Single Modular Transmitter Single Limited Modular Transmitter Product Information Product Description:

Wireless Adapter Card Model Name(s):

WL1SB21 FRN:

FCC Product ID:

FCC Module ID:

0023476120

BEJ-WL1SB21 Modular Checklist/Information For Modular Approval, the module shall meet all the requirements listed below. Please check () if the module complies with the stated requirement. The modular transmitter must have its own shielding. The modular transmitter must have buffered modulation/data inputs. The modular transmitter must have its own power supply regulation. The modular transmitter must comply with the antenna requirements of section 15.203 and 15.204(c). The modular transmitter must tested in a stand-alone configuration. The modular transmitter must be labeled with its own FCC ID number. The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacturer must provide adequate instruction along with the module to explain any such requirements. The modular transmitter must comply with any applicable RF exposure requirements. If a module(s) does NOT meet one or more of the above listed requirements, the applicant may request Limited Modular Approval (LMA). For LMA, please state details about why the above requirement(s) could not be met; and state how control of the end product, into which the module will be installed, will be maintained by the applicant / manufacturer, such that full compliance of the end product is always ensured:

(Name / Title) Kyung-Su Han / Director, NA Regulatory and Environmental Affairs

(Email Address) kyungsu.han@lge.com

(Phone number) 1-201-266-2215

(Address) LG Electronics USA, 1000 Sylvan Avenue, Englewood Cliffs, NJ 07632 HACS-F007-1 FCC Modular Approval Declaration Letter Rev : 3.2