2BSZRUSB-BLE-35MWireless Modules

Attestation Statement Letter I Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: Oct 14, 2025 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC Application for FCC ID: 2BSZRUSB-BLE-35M USLAB Co.,Ltd. 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: Son Kang Woon

Attestation Statement Letter II Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: Oct 14, 2025 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC Application for FCC ID: 2BSZRUSB-BLE-35M USLAB 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, Applicant’s Signature: Applicant’s Name: Kang Woon, Son

FCC Attestation Statement US Agent For Service Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: 14/Oct/2025 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC Application for FCC ID: 2BSZRUSB-BLE-35M USLAB Co.,Ltd. certifies that, as of the date of the filing of the application, FCC US Agent, LLC is our designated U.S. agent for service of process for the above reference FCC ID: 2BSZRUSB-BLE-35M. USLAB Co.,Ltd. agrees 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 proceedings involving the equipment. FCC US Agent, LLC accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for above referenced FCC ID. Designated U.S. Agent Information: Name: FCC US Agent, LLC Address: 3722 Illinois Avenue, Saint Charles, IL, 60174, USA Contact Person: Tim Payne Telephone: 708-571-3148 Email: [email protected] FRN : 0033402884 Sincerely, Applicant’s Signature: Agent’s Signature: Applicant’s Name: Kang Woon, Son Agent’s Name:

Date: 04/17/2018 VCB_F-01: Operating Procedures Form – FCC Authorization v02 Page 1 of 1 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: 14/Oct/2025 SUBJECT: FCC Application for (FCC ID: 2BSZRUSB-BLE-35M) To Whom It May Concern: We, the undersigned, hereby authorize Si-Yeon, Hwang 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: Kang Woon, Son & CTO Contact information / address: USLAB Co.,Ltd. / 201-ho, Business Incubator Center, 237, Sangidaehak-ro, Siheung-si, Gyeonggi-do, Republic of Korea

Date: 04/17/2018 VCB_F-01: Operating Procedures Form – FCC Confidentiality v03 Page 1 of 1 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2BSZRUSB- BLE-35M 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: Kang Woon, Son & CTO Contact information / address: USLAB Co.,Ltd. / 201-ho, Business Incubator Center, 237, Sangidaehak-ro, Siheung-si, Gyeonggi-do, Republic of Korea

Date: 04/17/2018 VCB_F-01: Operating Procedures Form – FCC Modular v02 Page 1 of 1 MODULAR APPROVAL LETTER 2BSZRUSB-BLE-35M, is seeking FCC Authorization as a Single Modular transmitter / Single Limited Modular Approval (Please check one) The EUT meets the requirements for Single Modular approval / Single Limited Modular Approval (please check one) as detailed in KDB 996369. Compliance to each of the requirements is described below: Modular Approval Requirement Yes No Please provide a detailed explanation if the answer is “No.” (i) The radio elements of the modular transmitter must have their own shielding. The physical crystal and tuning capacitors may be located external to the shielded radio elements. X (ii) 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. X (iii) The modular transmitter must have its own power supply regulation. X (iv) The modular transmitter must comply with the antenna and transmission system requirements of §§ 15.203, 15.204(b) 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 ‘‘professional installation’’ provision of § 15.203 is not applicable to modules but can apply to limited modular approvals under paragraph (b) of this section. X (v) The modular transmitter must be tested in a stand-alone configuration X (vi) The modular transmitter must be equipped with either a permanently affixed label or must be capable of electronically displaying its FCC identification number. X (vii) The modular transmitter must comply with any specific rules or operating requirements that ordinarily apply to a complete 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. X (viii) The modular transmitter must comply with any applicable RF exposure requirements in its final configuration. X Client’s signature: Client’s name & title: Son Kang Woon & CTO Contact information / address: USLAB Co.,Ltd. / 201-ho, Business Incubator Center, 237, Sangidaehak-ro, Siheung-si, Gyeonggi-do, Republic of Korea (USLAB Co.,Ltd.) FCC ID :

LABEL USLAB CO.,LTD Model : USB-BLE-35M FCC ID : 2BSZRUSB-BLE-35M IC : 34657-USL35M01 Made in Korea

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 OET Bulletin 65 Section 2: PREDICTION METHODS_Equations for Predicting RF Fields RF Exposure Regulation 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. Evaluation Method Limit Table 1 to § 1.1310(e)(1)—Limits for Maximum Permissible Exposure (MPE) 1.00 Bluetooth 2M 2 402-29.57 ± 1.0-28.570.500.000 000 3 1.00 S(power density [mW/cm 2 ]) = 10^{(Max Tune-up Power [㏈m]+Ant Gain [㏈i])/10} / (4 x π x R 2 ) Bluetooth 1M 2 402-29.66 ± 1.0-28.660.500.000 000 3 Power density at 20 ㎝ [㎽/㎠] Limit [㎽/㎠] Mode Frequency [㎒] Max Power / tolerance [㏈m] Max Tune-up Power [㏈m] Ant Gain [㏈i] Result

시 험 성 적 서 TEST REPORT 페이지(page) : (2) / 총(Total) (45) 40 5. Used equipment 2. Equipment under Test(EUT) Information Contents 5 6 8 3. Test Summary 4. Test Result 1. Applicant & Manufacturer & Test Laboratory Information 4 ICRT-QPA-17-03 Rev.2 Report No. ICRT-TR-E253890-0A 시 험 성 적 서 TEST REPORT 페이지(page) : (3) / 총(Total) (45) ICRT-TR-E253890-0A2025. 12. 03 Revision History Issued Report No.Issued DateRevisionsEffect Section Initial IssueAll ICRT-QPA-17-03 Rev.2 Report No. ICRT-TR-E253890-0A 시 험 성 적 서 TEST REPORT 페이지(page) : (4) / 총(Total) (45) ±1.5 dB 1.44 dB±3 dB 1.35 dB ±3 dB 0.02%±3 %Supply voltages ±6 dB2.10 dB 1.95 dB All emissions, radiated (Range 1 GHz ~ 18 GHz)2.47 dB±6 dB Fax No. 1.4 Measurement Uncertainty ±6 dB Time All emissions, radiated (Range 30 MHz ~ 1 GHz) UncertaintyLimit 0.58% +82-2-6351-9007 KT652 KR0165 KOLAS No. KC & FCC Occupied Channel Bandwidth RF output power, conducted Power Spectral Density, conducted Unwanted Emissions, conducted ±5 % All emissions, radiated (Under the 30 MHz) 0.14%±5 % 0.85 dB Applicant Address USLAB Co.,Ltd. 201-ho, Business Incubator Center, 237, Sangidaehak-ro, Siheung-si, Gyeonggi-do, Republic of Korea USLAB Co.,Ltd. 201-ho, Business Incubator Center, 237, Sangidaehak-ro, Siheung-si, Gyeonggi-do, Republic of Korea Address 112, Hwanggeum 3-ro 7beon-gil, Hagun-ri, Yangchon-eup, Gimpo-si, Gyeonggi-do, Korea +82-2-6351-9002Telephone No. ICR Co., Ltd. All emissions, radiated (Range 18 GHz ~ 26.5 GHz)2.61 dB±6 dB 1. Applicant & Manufacturer & Test Laboratory Information 1.1 Applicant information 1.2 Manufacturer Information 1.3 Test Laboratory Information Applicant Address Laboratory Parameter ICRT-QPA-17-03 Rev.2 Report No. ICRT-TR-E253890-0A 시 험 성 적 서 TEST REPORT 페이지(page) : (5) / 총(Total) (45) 2.3 Modifications of EUT - None. Equipment Class Product Name Model Name Additional Model Name- USB-BLE-35M USLAB BLE Module Antenna Gain0.5 dBi Stand-alone Bluetooth LE 1M/LE 2M 2 402 ㎒ ~ 2 480 ㎒ -29.66 dBm Operating Frequency RF Output Power Number of Channel Device Type Modulation Type ISED certification number 2.2 Additional Information FCC ID Power SupplyDC 3.3 V 2BSZRUSB-BLE-35M GFSK DTS-Digital Transmission System -29.59 dBm 40Bluetooth LE 1M/LE 2M Bluetooth LE 2M Bluetooth LE 1M 34657-USL35M01 Antenna TypeChip Antenna 2. Equipment under Test(EUT) Information 2.1 General Information ICRT-QPA-17-03 Rev.2 Report No. ICRT-TR-E253890-0A 시 험 성 적 서 TEST REPORT 페이지(page) : (6) / 총(Total) (45) 3.1.2 Test Methodology FCC Part Section RSS Section Test items - To determine whether the equipment under test fulfills the requirements of the standards stated in FCC Part 15 Subpart C Section 15.247. 3.1.1 Purpose of the test AppliedResults §15.247 (a) (2) RSS-Gen 6.7 & RSS-247 6.3.1(a) 6 ㏈ Bandwidth ■PASS Maximum Conducted Output Power■PASS RSS-Gen 8.9 & RSS-Gen 8.10 & RSS-247 6.6 Radiated Spurious Emission ■ PASS §15.247 (b) (3) RSS-Gen 6.12 & RSS-247 6.3.2 - Both conducted and radiated testing was performed according to the procedures in RSS-Gen & RSS-247. Radiated testing was performed at a distance of 3 m from EUT to the antenna. - To determine whether the equipment under test fulfills the requirements of the standards stated in RSS-Gen & RSS-247. - Both conducted and radiated testing was performed according to the procedures in ANSI C63.10: 2020. Radiated testing was performed at a distance of 3 m from EUT to the antenna. 3. Test Summary FCC Part 15 Subpart C & IC RSS-Gen & RSS-247 3.1 Test standards and results §15.207RSS-Gen 8.8AC Line Conducted Emission ■ PASS N/ARSS-Gen 6.7 99 % Bandwidth ■PASS §15.247 (d)RSS-247 6.6 Conducted Spurious Emission & Band edge ■PASS §15.247 (d) & §15.209 & § 15.205 ICRT-QPA-17-03 Rev.2 Report No. ICRT-TR-E253890-0A §15.247(e) RSS-247 6.3.1(b) Power Spectral DensityPASS■ 시 험 성 적 서 TEST REPORT 페이지(page) : (7) / 총(Total) (45) - 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 reduced below the stated values in paragraphs (b)(1), (b)(2), and (b)(3) of this section, as appropriate, by the amount in dB that the directional gain of the antenna exceeds 6 dBi. Result: Pass The transmitter has a Chip Antenna. The directional gain of the antenna is 0.5 dBi. Radiated emission test 3.2 Antenna requirement - 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. - Preliminary radiated emissions test were conducted using the procedure in RSS-Gen & RSS-247 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 re…

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2450 MHz AntennaP/N 2450AT18B100 Detail Specification: 08/10/09 Page 1 of 3 General Specifications Part Number 2450AT18B100 Input Power 3W max. Frequency Range 2400 - 2500 Mhz Impedance 50 Ω Peak Gain 0.5 dBi typ. (XZ-V) Operating Temperature -40 to +85°C Average Gain -0.5 dBi typ. (XZ-V) Reel Quanity 3,000 Return Loss 9.5 dB min. Terminal Configuration Packaging BulkSuffix = SEg. 2450AT18B100S No. Function P/N Style T & RSuffix = EEg. 2450AT18B100E 1 Feeding Point Suffix Termination 100% TinSuffix = None Eg. 2450AT18B100(E or S) 2 NC Style Tin / Lead Mechanical Dimensions Inmm L ±± W ±± T a ±± Mounting Considerations Mount these devices with brown mark facing up. Units: mm Line width should be designed to provide 50 Ω impedance matching characteristics. a) Without Matching Circuits b) With Matching Circuits Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions. www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 2009 Johanson Technology, Inc. All Rights Reserved Please consult Factory 0.0120.020 1.30 0.30 1.600.200.008 0.051 +.004/-.008+0.1/-0.2 "High Frequency Ceramic Solutions" 0.50 0.1260.0083.200.20 0.063 1 2 L W a T ) Matching Component JTI P/Ns: L-14C2N7JV4 L-14C2N2JV4 * 2.6 4.2 1.6 1.9 0.4 2.7nH 1.2pF 3.3nH JTI P/N for Matching Circuit: Cap (1.2pF): 500R07S1R2BV4T Inductor (2.7nH): L-07C2N7SV6T Inductor (3.3nH): L-07C3N3SV6T 2450 MHz AntennaP/N 2450AT18B100 Detail Specification: 08/10/09 Page 2 of 3 Typical Electrical Characteristics (T=25 o C) Test Board: Return Loss a) Without Matching Circuitb) With Matching Circuit Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions. www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 2009 Johanson Technology, Inc. All Rights Reserved "High Frequency Ceramic Solutions" ) ) ) ) ) ) ) ) ) Ground 13.5mm 6.5mm 39.5mm 6.5mm Matching Circuit No Ground 50Ω Feed Line Antenna 19mm 4mm 2450 MHz AntennaP/N 2450AT18B100 Detail Specification: 08/10/09 Page 3 of 3 Typical Radiation Patterns Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions. www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 2009 Johanson Technology, Inc. All Rights Reserved "High Frequency Ceramic Solutions" ) ) ) ) ) ) ) ) )