2ALNA-BK10SEWireless Keyboard

External Photographs View of EUT-1 View of EUT-2 Page 2 of 4 View of EUT-3 View of EUT-4 Page 3 of 4 View of EUT-5 View of EUT-6 Page 4 of 4 View of EUT-7 View of EUT-8

Model: BK10 SE FCC ID: 2ALNA-BK10SE IC: 35418-BK10SE Wireless Keyboard Input: 5V 500mA Made in China US Importer: Thousandshores Inc., 37707 Cherry St, Newark, CA 94560, USA CAN ICES-3(B)/NMB-3(B) 5mm 尺寸：67.3*32.2mm

Internal Photographs Internal View of EUT-1 Internal View of EUT-2 Page 2 of 3 Internal View of EUT-3 Internal View of EUT-4 ANT Page 3 of 3 Internal View of EUT-5 Internal View of EUT-6

RF EXPOSURE EVALUATION EUT Specification EUT Wireless Keyboard Model Number BK10 SE Series Model / Model Difference / FCC ID 2ALNA-BK10SE Antenna gain (Max) -0.67dBi Operation Frequency 2402 MHz to 2480 MHz Power Supply DC 5V Battery 3.7V Classification Per Stipulated Test Standard §15.247(i), §2.1093 Modulation GFSK Max. output power 2.28dBm (1.69mW) Test Requirement: According to §15.247(i) and §1.1307(b)(1), 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. Routine SAR evaluation refers to that specifically required by §2.1093, using Page 2 of 2 measurements or computer simulation. When routine SAR evaluation is not required, portable transmitters with output power greater than the applicable low threshold require SAR evaluation to quality for TCB approval. One antenna is available for the EUT. The minimum separation distance is 5mm. Measurement Result BLE: Transmit Frequency (MHz) Mode Measured Power (dBm) Tune up Power (dBm) Max tune up power (dBm) Calculation Result 1-g SAR 2402 BLE 1M 2.28 2±1 3 0.6185 3 Signature: Alan He Date: 2026-6-29

Antenna Test Report 1 Customer航世 ProjectIC668 Antenna RevisionA0 Prepared by Checked by Date:2025.12.19 Content 1. Product Overview & Dimension 2. Test system 3. Antenna Matching Network 4. Test Result 4.1S11 Parameter-VSWR 2. Gain & Efficiency 3. 2D Pattern 2 Purpose This report is to measure the performance of antenna for IC668.The antenna operating frequency at 2400-2500MHz, All test data are showed asbelow. 1.Product Overview & Dimension 样机图片 3 2.Test System 4 Sequence NumberTest Itemequipment S parameterVSWRAgilent 5071C & Agilent 5062A OTA TestTRP&TIS Agilent 8960 E5515C& Agilent 4438C&CMW500 &CMW270 ETS&SATIMO Gain & EfficiencyGain & EfficiencyETS&SATIMO Agilent 5071C PCB板端匹配电路未改动 3.Antenna Matching Network 5 ElementValue E1/ E2/ E3/ 尺寸φ3*12.5 4. Test Result 6 4.1Gain & Efficiency-1# Frequency(MHz)Efficiency(%)Peak GAIN(dBi) 240011.08%-1.35 241011.20%-0.90 242011.59%-0.67 243011.50%-1.00 244010.56%-1.42 245011.06%-1.24 246011.94%-1.21 247012.17%-1.32 248011.83%-1.65 249012.38%-1.25 250013.19%-1.11 4. Test Result 4.22D Pattern Phi=0 7 4. Test Result 4.32D Pattern Phi=90 8 4. Test Result 4.42D Pattern Theta=90 9 天线尺寸图 尺寸 11

Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT BLE 1M 2402 Ant1 16.95 7.71 9.44 NVNT BLE 1M 2440 Ant1 16.96 7.71 9.43 NVNT BLE 1M 2480 Ant1 16.96 7.71 9.43 2 / 22 Duty Cycle NVNT BLE 1M 2402MHz Ant1 Duty Cycle NVNT BLE 1M 2440MHz Ant1 3 / 22 Duty Cycle NVNT BLE 1M 2480MHz Ant1 4 / 22 Maximum Peak Conducted Output Power Condition Mode Frequency (MHz) Antenna Total Conducted Power (dBm) Total Conducted Power (W) Gain (dBi) eirp (dBm) eirp (W) Limit Conducted(dBm) Limit EIRP (dBm) Verdict NVNT BLE 1M 2402 Ant1 2.28 0.00169 -0.67 1.61 0.00145 30 36 Pass NVNT BLE 1M 2440 Ant1 1.85 0.00153 -0.67 1.18 0.00131 30 36 Pass NVNT BLE 1M 2480 Ant1 1 0.00126 -0.67 0.33 0.00108 30 36 Pass 5 / 22 Peak Power NVNT BLE 1M 2402MHz Ant1 Peak Power NVNT BLE 1M 2440MHz Ant1 6 / 22 Peak Power NVNT BLE 1M 2480MHz Ant1 7 / 22 -6dB Bandwidth Condition Mode Frequency (MHz) Antenna -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT BLE 1M 2402 Ant1 0.6777 0.5 Pass NVNT BLE 1M 2440 Ant1 0.6854 0.5 Pass NVNT BLE 1M 2480 Ant1 0.683 0.5 Pass 8 / 22 -6dB Bandwidth NVNT BLE 1M 2402MHz Ant1 -6dB Bandwidth NVNT BLE 1M 2440MHz Ant1 9 / 22 -6dB Bandwidth NVNT BLE 1M 2480MHz Ant1 10 / 22 Occupied Channel Bandwidth Condition Mode Frequency (MHz) Antenna 99% OBW (MHz) NVNT BLE 1M 2402 Ant1 1.0354 NVNT BLE 1M 2440 Ant1 1.0399 NVNT BLE 1M 2480 Ant1 1.041 11 / 22 OBW NVNT BLE 1M 2402MHz Ant1 OBW NVNT BLE 1M 2440MHz Ant1 12 / 22 OBW NVNT BLE 1M 2480MHz Ant1 13 / 22 Maximum Power Spectral Density Level Condition Mode Frequency (MHz) Antenna Conducted PSD (dBm/3kHz) Duty Factor (dB) Total PSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNT BLE 1M 2402 Ant1 -15.69 0 -15.69 8 Pass NVNT BLE 1M 2440 Ant1 -16.09 0 -16.09 8 Pass NVNT BLE 1M 2480 Ant1 -16.89 0 -16.89 8 Pass 14 / 22 PSD NVNT BLE 1M 2402MHz Ant1 PSD NVNT BLE 1M 2440MHz Ant1 15 / 22 PSD NVNT BLE 1M 2480MHz Ant1 16 / 22 Band Edge Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2402 Ant1 -51.25 -20 Pass NVNT BLE 1M 2480 Ant1 -52 -20 Pass 17 / 22 Band Edge NVNT BLE 1M 2402MHz Ant1 Ref Band Edge NVNT BLE 1M 2402MHz Ant1 Emission 18 / 22 Band Edge NVNT BLE 1M 2480MHz Ant1 Ref Band Edge NVNT BLE 1M 2480MHz Ant1 Emission 19 / 22 Conducted RF Spurious Emission Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2402 Ant1 -44.69 -20 Pass NVNT BLE 1M 2440 Ant1 -44.09 -20 Pass NVNT BLE 1M 2480 Ant1 -43.2 -20 Pass 20 / 22 Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Emission 21 / 22 Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Emission 22 / 22 Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Emission

TRF No.: 04-E001-0B TRF Originator: GTG TRF Date: 2023-12-13 Web: www.gtggroup.com E-mail: [email protected] Tel.: 86-400 755 8988 CFR 47 FCC PART 15 SUBPART C RSS-247 Issue 4 TEST REPORT For Wireless Keyboard MODEL NUMBER: BK10 SE REPORT NUMBER: E04A26060847F00401 ISSUE DATE: June 29, 2026 FCC ID: 2ALNA-BK10SE IC: 35418-BK10SE Prepared for Shenzhen Thousandshores Technology Co., Ltd Room 1101, Building B, Lotus Plaza, No. 3186 Nanshan Avenue, Majialong Community, Nantou Street, Nanshan District, Shenzhen, China Prepared by Guangdong Global Testing Technology Co., Ltd. Room 101-105, 203-210, Building 1, No.2, Keji 8 Road, Songshan Lake Park, Dongguan city, Guangdong, People’s Republic of China, 523808 This report is based on a single evaluation of the submitted sample(s) of the above mentioned product, it does not imply an assessment of the production of the products. This report shall not be reproduced, except in full, without the written approval of Guangdong Global Testing Technology Co., Ltd. REPORT NO.: E04A26060847F00401 Page 2 of 43 TRF No.: 04-E001-0B Global Testing , Great Quality. Revision History Rev. Issue Date Revisions Revised By V0 June 29, 2026 Initial Issue REPORT NO.: E04A26060847F00401 Page 3 of 43 TRF No.: 04-E001-0B Global Testing , Great Quality. Summary of Test Results Test Item Clause Limit/Requirement Result Antenna Requirement N/A FCC Part 15.203/15.247 (c) RSS-GEN Clause 6.8 Pass AC Power Line Conducted Emission ANSI C63.10-2020, Clause 6.2 FCC Part 15.207 RSS-GEN Clause 8.8 Pass Conducted Output Power ANSI C63.10-2020, Clause 11.9.1.2 FCC Part 15.247 (b)(3) RSS-247 Clause 6.3.2 Pass 6dB Bandwidth and 99% Occupied Bandwidth ANSI C63.10-2020, Clause 11.8.1 or 11.8.2 FCC Part 15.247 (a)(2) RSS-247 Clause 6.3.1(a) ISED RSS-Gen Clause 6.7 Pass Power Spectral Density ANSI C63.10-2020, Clause 11.10.2 FCC Part 15.247 (e) RSS-247 Clause 6.3.1(b) Pass Conducted Band edge and spurious emission ANSI C63.10-2020, Clause 11.11 FCC Part 15.247(d) RSS-247 Clause 6.6 Pass Radiated Band edge and Spurious Emission ANSI C63.10-2020, Clause 11.12 FCC Part 15.247(d) FCC Part 15.205/15.209 RSS-247 Clause 6.6 RSS-GEN Clause 8.9 Pass Duty Cycle ANSI C63.10-2020, Clause 11.6 None; for reporting purposes only. Pass Note: 1. For ISED, this report is also performed according to ANSI C63.10-2020 + Cor.1-2023 + C63.10a-2024 + Errata to C63.10a-2024 standards. 2. N/A: In this whole report not applicable. *This test report is only published to and used by the applicant, and it is not for evidence purpose in China. *The measurement result for the sample received is <Pass> according to < CFR 47 FCC PART 15 SUBPART C, ISED RSS-247 Issue 4> when <Accuracy Method> decision rule is applied. REPORT NO.: E04A26060847F00401 Page 4 of 43 TRF No.: 04-E001-0B Global Testing , Great Quality. CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 5 2. TEST METHODOLOGY ......................................................................................................... 6 3. FACILITIES AND ACCREDITATION ..................................................................................... 6 4. CALIBRATION AND UNCERTAINTY ................................................................................... 7 4.1. MEASURING INSTRUMENT CALIBRATION ........................................................... 7 4.2. MEASUREMENT UNCERTAINTY ............................................................................ 7 5. EQUIPMENT UNDER TEST .................................................................................................. 8 5.1. DESCRIPTION OF EUT ........................................................................................... 8 5.2. CHANNEL LIST ........................................................................................................ 8 5.3. MAXIMUM CONDUCTED OUTPUT POWER ........................................................... 9 5.4. TEST CHANNEL CONFIGURATION ........................................................................ 9 5.5. THE WORSE CASE POWER SETTING PARAMETER ............................................ 9 5.6. DESCRIPTION OF AVAILABLE ANTENNAS ........................................................... 9 5.7. SUPPORT UNITS FOR SYSTEM TEST ................................................................. 10 5.8. SETUP DIAGRAM .................................................................................................. 10 6. MEASURING EQUIPMENT AND SOFTWARE USED......................................................... 11 7. ANTENNA PORT TEST RESULTS ..................................................................................... 13 7.1. Conducted Output Power ........................................................................................ 13 7.2. 6dB Bandwidth and 99% Occupied Bandwidth ....................................................... 14 7.3. Power Spectral Density ........................................................................................... 16 7.4. Conducted Band edge and spurious emission ........................................................ 17 7.5. Duty Cycle .............................................................................................................. 19 8. RADIATED TEST RESULTS ............................................................................................... 20 8.1. Radiated Band edge and Spurious Emission .......................................................... 26 9. ANTENNA REQUIREMENT ................................................................................................ 38 10. AC POWER LINE CONDUCTED EMISSION ......................................................... 40 11. TEST DATA - APPENDIX A ................................................................................... 43 REPORT NO.: E04A26060847F00401 Page 5 of 43 TRF No.: 04-E001-0B Global Testing , Great Quality. 1. ATTESTATION OF…

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Setup Photographs Radiated Band edge and Spurious Emission Page 2 of 2 Conducted emissions