2BO3L-CZTAH5BCUALG Home Pair

LG Electronics Inc. Attestation Statement Letter I Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: 11/June/2026 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC Application for FCC ID: 2BO3L-CZTAH5BCUA LG Electronics Inc. certifies that the equipment for which authorization is sought is not “covered” equipment prohibited for receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, Applicant’s Signature: Applicant’s Name: Yongdeok, Kwon, Chief Research Engineer, EMC Standard Team

LG Electronics Inc. Attestation Statement Letter II Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 11/June/2026 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC Application for FCC ID: 2BO3L-CZTAH5BCUA LG Electronics Inc. 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, Applicant’s Signature: Applicant’s Name: Yongdeok, Kwon, Chief Research Engineer, EMC Standard Team

Rev 1/26/2023 LGE Internal Use Only Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 06-05-2026 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: 2BO3L-CZTAH5BCUA Applicant FRN: 0036977056 LG Electronics Inc. (“the applicant”) certifies that, as of the date of the filing of the application LG Electronics USA, Inc. is our designated U.S. agent for service of process for the above referenced FCC ID. LG Electronics Inc. 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. LG Electronics USA, Inc. 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: Name: LG Electronics USA, Inc. U.S. Agent FRN: 0023476120 Address: 111 Sylvan Avenue North Building Englewood Cliffs, NJ 07632, USA Contact Person: Heejae Cho Tel.: 201-472-2623 Email: [email protected] Sincerely, LG Electronics Inc. LG Electronics USA, Inc. Yongdeok Kwon Heejae Cho

Date: 04/17/2018 VCB_F-01: Operating Procedures Form – FCC Authorization v02 Page 1 of 1 LG Electronics Inc. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: 11/June/2026 SUBJECT: FCC Application for (FCC ID: 2BO3L-CZTAH5BCUA) To Whom It May Concern: We, the undersigned, hereby authorize _Seong-Hun, Jeong_ in _ICR Co., Ltd._ on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by _ICR Co., Ltd._ on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, Client’s signature: Client’s name & title: Yongdeok, Kwon, Chief Research Engineer, EMC Standard Team Contact information / address: LG Electronics Inc. / 222 LG-ro, Jinwi-myeon, Pyeongtaek-si, gyeonggi-do, South Korea

Date: 04/17/2018 VCB_F-01: Operating Procedures Form – FCC Confidentiality v03 Page 1 of 1 LG Electronics Inc. Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2BO3L- CZTAH5BCUA Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Type of Confidentiality Requested Exhibit Type ☐Short Term ☒Permanent Block Diagrams ☒Short Term External Photos ☒Short Term ☐Permanent* Internal Photos ☐Short Term ☒Permanent Operation Description ☐Short Term ☒Permanent Parts List/BOM ☐Short Term ☒Permanent Schematics ☒Short Term Test Setup Photos ☒Short Term ☐Permanent* User manual *Requires further justification before permanent confidentiality will be allowed. 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. Permanent Confidentiality: The applicant requests the exhibits listed above as permanently confidential be withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality: Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below for an initial period of 180 days. Sincerely, Client’s signature: Client’s name & title: Yongdeok, Kwon, Chief Research Engineer, EMC Standard Team Contact information / address: LG Electronics Inc. / 222 LG-ro, Jinwi-myeon, Pyeongtaek-si, gyeonggi-do, South Korea

1.Regulation RF Exposure FCC rule part 1.1310(d) (1) Evaluation with respect to the SAR limits in this section must demonstrate compliance with both the whole-body and peak spatial-average limits using technically supported measurement or computational methods and exposure conditions in advance of authorization (licensing or equipment certification) and in a manner that facilitates independent assessment and, if appropriate, enforcement. Numerical computation of SAR must be supported by adequate documentation showing that the numerical method as implemented in the computational software has been fully validated; in addition, the equipment under test and exposure conditions must be modeled according to protocols established by FCC-accepted numerical computation standards or available FCC procedures for the specific computational method. (2) For operations within the frequency range of 300 kHz and 6 GHz (inclusive), the limits for maximum permissible exposure (MPE), derived from whole-body SAR limits and listed in Table 1 in paragraph (e)(1) of this section, may be used instead of whole-body SAR limits as set forth in paragraphs (a) through (c) of this section to evaluate the environmental impact of human exposure to RF radiation as specified in § 1.1307(b) of this part, except for portable devices as defined in § 2.1093 of this chapter as these evaluations shall be performed according to the SAR provisions in § 2.1093. 2.Evaluation Method OET Bulletin 65 Section 2: PREDICTION METHODS_Equations for Predicting RF Fields S = power density (in appropriate units, e.g. mW/cm2) 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 R = distance to the center of radiation of the antenna (appropriate units, e.g., cm) EIRP = equivalent (or effective) isotropically radiated power 1 / 3 Table 1 to § 1.1310(e)(1)—Limits for Maximum Permissible Exposure (MPE) 3.Limit 2 / 3 1. Power density(S) = 10^((Max Tune-up Power + Ant Gain )/10) / (4 x π x R 2 ) 4.Result Mode Frequency [MHz] Max Power [dBm] Tolerance [dBm] ± 1.0 Power density at 20 ㎝ [mW/cm 2 ] 0.001 527 Notes. Ant Gain [dBi] Limit [mW/cm 2 ] 802.15.4 (Zigbee 2 4409.55-1.71.0 3 / 3

page : (2) / Total (32) Contents 5 6 8 3. Test Summary 4. Test Result 1. Applicant & Manufacturer & Test Laboratory Information 4 2. Equipment under Test(EUT) Information 32 5. Used equipment ICRT-QPA-17-03 Rev.2 Report No. ICRT-TR-E261774-0A page : (3) / Total (32) Initial IssueAllICRT-TR-E261774-0A2026. 06. 10 Revision History Issued Report No.Issued DateRevisionsEffect Section ICRT-QPA-17-03 Rev.2 Report No. ICRT-TR-E261774-0A page : (4) / Total (32) LG Electronics Inc. Address Address 1(FCC) : 222 LG-ro, Jinwi-myeon, Pyeongtaek-si, gyeonggi-do. Korea Address 2(IC) :170, Seogsasn Pachong-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, Korea ApplicantEM-TECH Address Address 1(FCC) :No.12, Road 2, VSIP Nghe An Industrial Park, Hung Tay Commune, Hune Nguyen District, Nghe An Province, Vietnam Address 2(IC) :40, Changwon-daero 1144beon-gil, Seongsan-gu Changwon-si, Gyeongsangnam-do 51539 Korea(Republic Of) All emissions, radiated (Range 30 MHz ~ 1 GHz) ±6 ㏈1.95 ㏈ Telephone No. ±5 % 0.85 ㏈±1.5 ㏈ 1.44 ㏈±3 ㏈ 1.35 ㏈±3 ㏈ 1. Applicant & Manufacturer & Test Laboratory Information All emissions, radiated (Under the 30 MHz) 2.10 ㏈±6 ㏈ All emissions, radiated (Range 18 GHz ~ 26.5 GHz) 2.61 ㏈±6 ㏈ Fax No. Address 112, Hwanggeum 3-ro 7beon-gil, Hagun-ri, Yangchon-eup, Gimpo-si, Gyeonggi-do, Korea 1.1 Applicant information 1.2 Manufacturer Information 1.3 Test Laboratory Information LaboratoryICR Co., Ltd. Applicant ±6 ㏈ Time All emissions, radiated (Range 1 GHz ~ 18 GHz) 0.58 % Supply voltages 2.47 ㏈ ±5 % 1.4 Measurement Uncertainty +82-2-6351-9002 +82-2-6351-9007 KT652 KR0165 KOLAS No. KC & FCC Occupied Channel Bandwidth RF output power, conducted Power Spectral Density, conducted Unwanted Emissions, conducted ParameterUncertaintyLimit 0.14 % 0.02 %±3 % ICRT-QPA-17-03 Rev.2 Report No. ICRT-TR-E261774-0A page : (5) / Total (32) DTS-Digital Transmission System 802.15.4(Zigbee) 802.15.4(Zigbee) 802.15.4(Zigbee) 802.15.4(Zigbee) DSSS PCB Antenna -1.7 ㏈i Stand-alone Product NameLG Home Pair 2. Equipment under Test(EUT) Information Modulation Type 2 405 ㎒ ~ 2 480 ㎒ Antenna Gain 2.1 General Information Additional Model Name FCC ID Power Supply 2.3 Modifications of EUT Device Type Antenna Type - Equipment Class Model NameCZTAH5BCUA 2BO3L-CZTAH5BCUA 2703N-CZTAH5BCUA DC 5 V Number of Channel Operating Frequency RF Output Power ISED Certification Number 2.2 Additional Information Serial NumberN/A - None 9.55 dBm 16 ICRT-QPA-17-03 Rev.2 Report No. ICRT-TR-E261774-0A page : (6) / Total (32) 3. Test Summary 3.3 Test Methodology - Both conducted and radiated testing was performed according to the procedures in ANSI C63.10-2020 and IC RSS-Gen & RSS-247. Radiated testing was performed at a distance of 3 m from EUT to the antenna. 3.4 Configuration of Test System 3.4.1 Radiated emission test - Preliminary radiated emissions test were conducted using the procedure in ANSI C63.10-2020 to determine the worse operating conditions. Final radiated emission tests were conducted at 3 m Semi Anechoic Chamber. The turntable was rotated through 360 degrees and the EUT was tested by positioned three orthogonal planes to obtain the highest reading on the field strength meter. Once maximum reading was determined, the search antenna was raised and lowered in both vertical and horizontal polarization - To determine whether the equipment under test fulfills the requirements of the standards stated in FCC Part 15 Subpart C Section 15.247 and IC RSS-Gen & RSS-247 3.2 Purpose of the test FCC Part 15 Subpart C & IC RSS-Gen & RSS-247 3.1 Test standards and results §15.247 (e) RSS-247 6.3.1(b)Power Spectral Density ■ PASS §15.247 (d)RSS-247 6.6 Conducted Spurious Emission & Band edge PASS N/ARSS-Gen 6.799 % Bandwidth ■ PASS §15.247 (b) (3) RSS-Gen 6.12 & RSS-247 6.3.2 Maximum Conducted Output Power ■ PASS §15.207RSS-Gen 8.8 AC Line Conducted Emission ■ PASS ■ PASS §15.247 (d) & §15.209 & §15.205 RSS-Gen 8.9 & RSS-Gen 8.10 & RSS-247 6.6 Radiated Spurious Emission ■ PASS FCC Part Section RSS Section Test itemsApplied Results §15.247 (a) (2) RSS-Gen 6.7 & RSS-247 6.3.1(a) 6 ㏈ Bandwidth ■ ICRT-QPA-17-03 Rev.2 Report No. ICRT-TR-E261774-0A page : (7) / Total (32) The transmitter uses an PCB antenna with a gain of -1.7 ㏈i. This antenna is printed on a PCB circuit, making it impossible for users to access or modify it arbitrarily and No provision is provided for the connection of an external antenna. Therefore, the antenna complies with the requirements of FCC §15.203. - According to RSS-Gen Section 6.8, The applicant for equipment certification shall provide a list of all antenna types that may be used with the transmitter, where applicable (i.e. for transmitters with detachable antenna), indicating the maximum permissible antenna gain (in dBi) and the required impedance for each antenna. The test report shall demonstrate the compliance of the transmitter with the limit for maximum equivalent isotropically radiated power (e.i.r.p.) specified in the applicable RSS, when the transmitter is equipped with any antenna type, selected from this list. - According to §15.203, an intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator shall be considered sufficient to comply with the provisions of this Section. The manufacturer may design the unit so that a broken antenna can be replaced by the user, but the use of a standard antenna jack or electrical connector is prohibited. And according to §15.247(b)(4), the conducted output power limit specified in paragraph (b) of this section is based on the use of antennas with directional gains that do not exceed 6 dBi. Except as shown in paragraph (c) of this section, if transmitting antennas of directional gain greater than 6 dBi are used, the conducted output power from the intentional radiator shall be reduc…

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Application Note AN043 SWRA117D Page 1 of 9 Small Size 2.4 GHz PCB antenna By Audun Andersen 1 KEYWORDS  CC25xx  CC24xx  CC2480  PCB antenna  USB dongle  2.4 GHz  Inverted F Antenna 2 INTRODUCTION The PCB antenna used on the CC2511 Inverted F Antenna reference design is described in this application note. Even if the antenna presented is for a Inverted F Antenna design it can be used in all 2.4 GHz designs, especially where small space is required for the antenna. This application note describes the antenna dimensions, the RF performance and considerations for complying with regulatory limits when using this design. The suggested antenna design requires no more than 15.2 x 5.7 mm of space and ensures a VSWR ratio of less than 2 across the 2.4 GHz ISM band when connected to a 50 ohm source. Application Note AN043 SWRA117D Page 2 of 9 Table of Contents 1 KEYWORDS ..................................................................................................................... 1 2 INTRODUCTION .............................................................................................................. 1 3 ABBREVIATIONS ............................................................................................................ 2 4 ANTENNA DESIGN ......................................................................................................... 3 4.1 DESIGN GOALS ........................................................................................................... 3 4.2 SIMULATION ................................................................................................................ 3 4.3 LAYOUT AND IMPLEMENTATION ..................................................................................... 4 5 TEST RESULTS ............................................................................................................... 5 5.1 REFLECTION ............................................................................................................... 5 5.2 RADIATION PATTERN ................................................................................................... 7 6 CONCLUSION .................................................................................................................. 8 7 GENERAL INFORMATION ..............................................................................................9 7.1 DOCUMENT HISTORY ...................................................................................................9 3 ABBREVIATIONS CAD Computer Aided Design CC24xx CC2400, CC2420, CC2430 and CC2431 CC25xx CC2500, CC2510, CC2511, CC2550 and CC2520 CC2480 Z-Accel ZigBee Processor IFA Inverted F Antenna ISM Industrial, Scientific and Medical LOS Line Of Sight PCB Printed Circuit Board PER Packet Error Rate VSWR Voltage Standing Wave Ratio Application Note AN043 SWRA117D Page 3 of 9 4 ANTENNA DESIGN The PCB antenna on the CC2511 Inverted F Antenna reference design is a meandered Inverted F Antenna (IFA). The IFA was designed to match an impedance of 50 ohm at 2.45 GHz. Thus no additional matching components are necessary. 4.1 Design Goals The reflection at the feed point of the antenna determines how much of the applied power is delivered to the antenna. A reflection of less than -10 dB across the 2.4 GHz ISM band, when connected to a 50 ohm source, was a design goal. Reflection of less than -10 dB, or VSWR less than 2, ensures that more than 90% of the available power is delivered to the antenna. Bandwidth is in this document defined as the frequency band where more than 90% of the available power is delivered to the antenna. Another design goal was to fit the size of the PCB antenna on a Inverted F Antenna and to obtain good performance also when the dongle is connected to a computer. 4.2 Simulation IE3D from Zeland, which is an electromagnetic simulation tool, was used to design the antenna. The accuracy of the simulation is controlled by the mesh. An increase of the mesh increases the simulation time. Thus, for initial simulations mesh = 1 should be used. When a fairly good result is achieved a higher mesh should be used to obtain more accurate results. Comparison of simulation and measurement results shows that the measured reflection is between the result obtained with mesh = 5 and mesh = 1; see 1 for details. Figure 1: Comparison of Simulation and Measurements Results Application Note AN043 SWRA117D Page 4 of 9 4.3 Layout and Implementation Small changes of the antenna dimensions may have large impact on the performance. Therefore it is strongly recommended to make an exact copy of the reference design to achieve optimum performance. The easiest way to implement the antenna is to import the gerber or DXF file showing the antenna layout. These files are named IFA_USB.spl and IFA_USB.dxf respectively and are included in the CC2511 Inverted F Antenna reference design available from http://www.ti.com\lpw. The imported file can be used as a template when drawing the antenna. By using this procedure it should be possible to make an exact copy. If the PCB CAD tool being used does not support import of DXF or gerber files, Figure 3 and Table 1 should be used to ensure correct implementation. It is recommended to generate a gerber file for comparison with IFA_USB.spl when making a manual implementation. Most gerber viewers have the possibility to import several gerber files at the same time. Thus by placing the gerber file, showing the manually implemented antenna, on top of IFA_USB.spl it is easy to verify that the antenna is correctly implemented. It is also recommended to use the same thickness and type of PCB material as used in the reference design. Information about the PCB can be found in a separate readme file included in the reference design. To compensate for a thicker/thinner PCB the antenna could be made slightly shorter/longer. Figure 2: Antenna Dimensions Application Note AN043 SWRA117D Page 5 of 9 5 TEST RESULTS Reflection, radiatio…

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