2BWPU-ZLNBultrasonic water meter

Report No.: Ti-EE26060596-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 1 / 10 Web: www.titcgroup.com Template No.: TRP-FCC-Mobile-1 (2026-04-30) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen TEST REPORT Applicant: Ningbo Zlink Technology Co., Ltd. Address: No.1, Song Cui Road, Dongqian Lake Tourism Resort, Ningbo, Zhejiang, China Equipment Type: ultrasonic water meter Model Name: LXC (refer to section 2.3) Brand Name: ZLINK FCC ID: 2BWPU-ZLNB Test Standard: 47 CFR Part 2.1091 KDB 447498 D04 v01 Sample Arrival Date: Jun. 16, 2026 Test Date: Jul. 03, 2026 Date of Issue: Jul. 10, 2026 ISSUED BY: Shenzhen BALUN Technology Co., Ltd. Tested by: Xiong Lining Checked by: Xu Rui Approved by: Liao Jianming (Technical Director) _______________ _______________ _______________ Report No.: Ti-EE26060596-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 2 / 10 Web: www.titcgroup.com Template No.: TRP-FCC-Mobile-1 (2026-04-30) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen Revision History Version Issue Date Revisions Content Rev. 01 Jul. 10, 2026 Initial Issue TABLE OF CONTENTS 1 GENERAL INFORMATION ........................................................................................................ 3 1.1 Test Laboratory ............................................................................................................ 3 1.2 Test Location ................................................................................................................ 3 2 PRODUCT INFORMATION ....................................................................................................... 4 2.1 Applicant Information .................................................................................................... 4 2.2 Manufacturer Information .............................................................................................. 4 2.3 General Description for Equipment under Test (EUT) ................................................... 4 2.4 Technical Information ................................................................................................... 5 3 SUMMARY OF TEST RESULT ................................................................................................. 6 3.1 Test Standards ............................................................................................................. 6 3.2 Limit Standards ............................................................................................................. 6 4 DEVICE CATEGORY AND LEVELS LIMITS ............................................................................. 7 5 ASSESSMENT RESULT ........................................................................................................... 9 5.1 Output Power ............................................................................................................... 9 5.2 Tune-up power ............................................................................................................. 9 5.3 RF Exposure Evaluation Result .................................................................................... 9 5.4 Conclusion .................................................................................................................... 9 Report No.: Ti-EE26060596-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 3 / 10 Web: www.titcgroup.com Template No.: TRP-FCC-Mobile-1 (2026-04-30) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen 1 GENERAL INFORMATION 1.1 Test Laboratory Name Shenzhen BALUN Technology Co., Ltd. Address 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen Phone Number +86 755 6685 0100 1.2 Test Location Name Shenzhen BALUN Technology Co., Ltd. Location Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen, Guangdong 1/F., Building B, Ganghongji High-Tech Intelligent Industrial Park, No.1008, Songbai Road, Yangguang Community, Xili Subdistrict, Nanshan District, Shenzhen, Guangdong Accreditation Certificate The laboratory is a testing organization accredited by FCC as a accredited testing laboratory. The designation number is CN1196. Report No.: Ti-EE26060596-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 4 / 10 Web: www.titcgroup.com Template No.: TRP-FCC-Mobile-1 (2026-04-30) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen 2 PRODUCT INFORMATION 2.1 Applicant Information Applicant Ningbo Zlink Technology Co., Ltd. Address No.1, Song Cui Road, Dongqian Lake Tourism Resort, Ningbo, Zhejiang, China 2.2 Manufacturer Information Manufacturer Ningbo Zlink Technology Co., Ltd. Address No.1, Song Cui Road, Dongqian Lake Tourism Resort, Ningbo, Zhejiang, China 2.3 General Description for Equipment under Test (EUT) EUT Name ultrasonic water meter Model Name Under Test LXC Series Model Name LXC-DN15, LXC-DN20, LXC-DN25 Description of Model name differentiation All models are same with electrical parameters and internal circuit structure, The only differences are the diameter and length of the connecting pipes, which are all made of plastic tubing. All other components remainthe same. (this information provided by the applicant) Hardware Version PHXW211.R112-0V01-F-BC660-20250929 Software Version 4.37.03.04.46 Dimensions (Approx.) N/A Weight (Approx.) N/A Report No.: Ti-EE26060596-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 5 / 10 Web: www.titcgroup.com…

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Document No: Ti-EE26060596 Page 1 of 13 Annex A.2 Peak to Average Ratio Document No: Ti-EE26060596 Page 2 of 13 1. NB-IoT_Band2_BPSK_3.75kHz_1@0_Low 1.1. NB-IoT Peak to Average Ratio_Part22-24-27(NTNV) Center Frequency(MHz) PAR Percent (%) RBW (MHz) PAR (dB) Limit (dB) Verdict 1850.1 0.1 1 1.8 13 Pass Document No: Ti-EE26060596 Page 3 of 13 2. NB-IoT_Band2_QPSK_3.75kHz_1@0_Low 2.1. NB-IoT Peak to Average Ratio_Part22-24-27(NTNV) Center Frequency(MHz) PAR Percent (%) RBW (MHz) PAR (dB) Limit (dB) Verdict 1850.1 0.1 1 2.59 13 Pass Document No: Ti-EE26060596 Page 4 of 13 3. NB-IoT_Band2_BPSK_3.75kHz_1@0_Mid 3.2. NB-IoT Peak to Average Ratio_Part22-24-27(NTNV) Center Frequency(MHz) PAR Percent (%) RBW (MHz) PAR (dB) Limit (dB) Verdict 1880 0.1 1 2.05 13 Pass Document No: Ti-EE26060596 Page 5 of 13 4. NB-IoT_Band2_QPSK_3.75kHz_1@0_Mid 4.1. NB-IoT Peak to Average Ratio_Part22-24-27(NTNV) Center Frequency(MHz) PAR Percent (%) RBW (MHz) PAR (dB) Limit (dB) Verdict 1880 0.1 1 3.01 13 Pass Document No: Ti-EE26060596 Page 6 of 13 5. NB-IoT_Band2_BPSK_3.75kHz_1@0_High 5.1. NB-IoT Peak to Average Ratio_Part22-24-27(NTNV) Center Frequency(MHz) PAR Percent (%) RBW (MHz) PAR (dB) Limit (dB) Verdict 1909.9 0.1 1 2.11 13 Pass Document No: Ti-EE26060596 Page 7 of 13 6. NB-IoT_Band2_QPSK_3.75kHz_1@0_High 6.1. NB-IoT Peak to Average Ratio_Part22-24-27(NTNV) Center Frequency(MHz) PAR Percent (%) RBW (MHz) PAR (dB) Limit (dB) Verdict 1909.9 0.1 1 2.49 13 Pass Document No: Ti-EE26060596 Page 8 of 13 7. NB-IoT_Band2_BPSK_15kHz_1@0_Mid 7.1. NB-IoT Peak to Average Ratio_Part22-24-27(NTNV) Center Frequency(MHz) PAR Percent (%) RBW (MHz) PAR (dB) Limit (dB) Verdict 1880 0.1 1 3.27 13 Pass Document No: Ti-EE26060596 Page 9 of 13 8. NB-IoT_Band2_QPSK_15kHz_1@0_Mid 8.1. NB-IoT Peak to Average Ratio_Part22-24-27(NTNV) Center Frequency(MHz) PAR Percent (%) RBW (MHz) PAR (dB) Limit (dB) Verdict 1880 0.1 1 5.79 13 Pass Document No: Ti-EE26060596 Page 10 of 13 9. NB-IoT_Band2_QPSK_15kHz_1@0_High 9.1. NB-IoT Peak to Average Ratio_Part22-24-27(NTNV) Center Frequency(MHz) PAR Percent (%) RBW (MHz) PAR (dB) Limit (dB) Verdict 1909.9 0.1 1 5.25 13 Pass Document No: Ti-EE26060596 Page 11 of 13 10. NB-IoT_Band2_BPSK_15kHz_1@0_High 10.1. NB-IoT Peak to Average Ratio_Part22-24-27(NTNV) Center Frequency(MHz) PAR Percent (%) RBW (MHz) PAR (dB) Limit (dB) Verdict 1909.9 0.1 1 3.4 13 Pass Document No: Ti-EE26060596 Page 12 of 13 11. NB-IoT_Band2_BPSK_15kHz_1@0_Low 11.1. NB-IoT Peak to Average Ratio_Part22-24-27(NTNV) Center Frequency(MHz) PAR Percent (%) RBW (MHz) PAR (dB) Limit (dB) Verdict 1850.1 0.1 1 3.59 13 Pass Document No: Ti-EE26060596 Page 13 of 13 12. NB-IoT_Band2_QPSK_15kHz_1@0_Low 12.1. NB-IoT Peak to Average Ratio_Part22-24-27(NTNV) Center Frequency(MHz) PAR Percent (%) RBW (MHz) PAR (dB) Limit (dB) Verdict 1850.1 0.1 1 6.16 13 Pass --BLANK BELOW--

Document No: Ti-EE26060596 Page 1 of 16 Annex A.3 Occupied Bandwidth Document No: Ti-EE26060596 Page 2 of 16 1. NB-IoT_Band2_BPSK_3.75kHz_1@0_Low 1.1. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1850.1 99 26 0.002 Peak 0.2 0.098 0.047 Pass Document No: Ti-EE26060596 Page 3 of 16 2. NB-IoT_Band2_QPSK_3.75kHz_1@0_Low 2.1. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1850.1 99 26 0.002 Peak 0.2 0.094 0.049 Pass Document No: Ti-EE26060596 Page 4 of 16 3. NB-IoT_Band2_BPSK_3.75kHz_1@0_Mid 3.2. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1880 99 26 0.002 Peak 0.2 0.092 0.046 Pass Document No: Ti-EE26060596 Page 5 of 16 4. NB-IoT_Band2_QPSK_3.75kHz_1@0_Mid 4.1. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1880 99 26 0.002 Peak 0.2 0.093 0.049 Pass Document No: Ti-EE26060596 Page 6 of 16 5. NB-IoT_Band2_BPSK_3.75kHz_1@0_High 5.1. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1909.9 99 26 0.002 Peak 0.2 0.094 0.046 Pass Document No: Ti-EE26060596 Page 7 of 16 6. NB-IoT_Band2_QPSK_3.75kHz_1@0_High 6.1. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1909.9 99 26 0.002 Peak 0.2 0.091 0.049 Pass Document No: Ti-EE26060596 Page 8 of 16 7. NB-IoT_Band2_QPSK_15kHz_12@0_High 7.2. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1909.9 99 26 0.002 Peak 0.2 0.171 0.218 Pass Document No: Ti-EE26060596 Page 9 of 16 8. NB-IoT_Band2_QPSK_15kHz_12@0_Mid 8.1. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1880 99 26 0.002 Peak 0.2 0.173 0.213 Pass Document No: Ti-EE26060596 Page 10 of 16 9. NB-IoT_Band2_BPSK_15kHz_1@0_Mid 9.1. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1880 99 26 0.002 Peak 0.2 0.105 0.114 Pass Document No: Ti-EE26060596 Page 11 of 16 10. NB-IoT_Band2_QPSK_15kHz_1@0_Mid 10.1. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1880 99 26 0.002 Peak 0.2 0.13 0.149 Pass Document No: Ti-EE26060596 Page 12 of 16 11. NB-IoT_Band2_QPSK_15kHz_1@0_High 11.1. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1909.9 99 26 0.002 Peak 0.2 0.132 0.161 Pass Document No: Ti-EE26060596 Page 13 of 16 12. NB-IoT_Band2_BPSK_15kHz_1@0_High 12.1. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1909.9 99 26 0.002 Peak 0.2 0.104 0.111 Pass Document No: Ti-EE26060596 Page 14 of 16 13. NB-IoT_Band2_BPSK_15kHz_1@0_Low 13.1. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1850.1 99 26 0.002 Peak 0.2 0.108 0.111 Pass Document No: Ti-EE26060596 Page 15 of 16 14. NB-IoT_Band2_QPSK_15kHz_1@0_Low 14.1. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1850.1 99 26 0.002 Peak 0.2 0.131 0.15 Pass Document No: Ti-EE26060596 Page 16 of 16 15. NB-IoT_Band2_QPSK_15kHz_12@0_Low 15.1. NB-IoT Occupied Bandwidth_Part22-24-27(NTNV) Center Frequency (MHz) OBW Power (%) XdB Down RBW (MHz) Detector Limit (MHz) OBW (MHz) XdB BandWidth (MHz) Verdict 1850.1 99 26 0.002 Peak 0.2 0.175 0.221 Pass --BLANK BELOW--

Document No: Ti-EE26060596 Page 1 of 13 Annex A.5 Spurious Emission at Antenna Terminals Document No: Ti-EE26060596 Page 2 of 13 1. NB-IoT_Band2_QPSK_15kHz_1@0_Low 1.1. NB-IoT Spurious Emission at Antenna Terminals_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Power (dBm) Limit (dBm) Margin (dB) Verdict Sweep Point 0.009 0.15 0.001 RMS 0.011 -47.26 -13 34.26 Pass 401 0.15 30 0.01 RMS 0.15 -55.16 -13 42.16 Pass 5971 30 1000 0.1 RMS 879.3 -59.99 -13 46.99 Pass 19401 1000 1840 1 RMS 1604 -49.18 -13 36.18 Pass 1681 1840 1920 1 RMS 1850 19.21 60 40.79 Pass 401 1920 3000 1 RMS 2409 -46.02 -13 33.02 Pass 2161 3000 20000 1 RMS 19957 -26.79 -13 13.79 Pass 34001 Document No: Ti-EE26060596 Page 3 of 13 2. NB-IoT_Band2_BPSK_15kHz_1@0_Low 2.1. NB-IoT Spurious Emission at Antenna Terminals_Part22-24-27(NTNV) Start Frequency (MHz) Stop Frequency (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Power (dBm) Limit (dBm) Margi n (dB) Verdic t Sweep Point 0.009 0.15 0.001 RMS 0.009 -48.87 -13 35.87 Pass 401 0.15 30 0.01 RMS 0.15 -56.07 -13 43.07 Pass 5971 30 1000 0.1 RMS 892.2 -59.96 -13 46.96 Pass 19401 1000 1840 1 RMS 1604 -49.12 -13 36.12 Pass 1681 1840 1920 1 RMS 1850 19.54 60 40.46 Pass 401 1920 3000 1 RMS 2598 -44.69 -13 31.69 Pass 2161 3000 20000 1 RMS 19932 -26.72 -13 13.72 Pass 34001 Document No: Ti-EE26060596 Page 4 of 13 3. NB-IoT_Band2_BPSK_15kHz_1@0_Mid 3.1. NB-IoT Spurious Emission at Antenna Terminals_Part22-24-27(NTNV) Start Frequency (MHz) Stop Frequency (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Power (dBm) Limit (dBm) Margi n (dB) Verdic t Sweep Point 0.009 0.15 0.001 RMS 0.01 -49.58 -13 36.58 Pass 401 0.15 30 0.01 RMS 0.16 -55.35 -13 42.35 Pass 5971 30 1000 0.1 RMS 896.2 -60.07 -13 47.07 Pass 19401 1000 1840 1 RMS 1634 -49.07 -13 36.07 Pass 1681 1840 1920 1 RMS 1880 19.25 60 40.75 Pass 401 1920 3000 1 RMS 2409 -46.83 -13 33.83 Pass 2161 3000 20000 1 RMS 19948 -26.79 -13 13.79 Pass 34001 Document No: Ti-EE26060596 Page 5 of 13 4. NB-IoT_Band2_QPSK_15kHz_1@0_Mid 4.1. NB-IoT Spurious Emission at Antenna Terminals_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Power (dBm) Limit (dBm) Margin (dB) Verdic t Sweep Point 0.009 0.15 0.001 RMS 0.01 -49.42 -13 36.42 Pass 401 0.15 30 0.01 RMS 0.15 -55.51 -13 42.51 Pass 5971 30 1000 0.1 RMS 924.2 -60.13 -13 47.13 Pass 19401 1000 1840 1 RMS 1778 -49.03 -13 36.03 Pass 1681 1840 1920 1 RMS 1880 18.71 60 41.29 Pass 401 1920 3000 1 RMS 2407 -46.8 -13 33.8 Pass 2161 3000 20000 1 RMS 19939 -26.82 -13 13.82 Pass 34001 Document No: Ti-EE26060596 Page 6 of 13 5. NB-IoT_Band2_QPSK_15kHz_1@0_High 5.1. NB-IoT Spurious Emission at Antenna Terminals_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Power (dBm) Limit (dBm) Margin (dB) Verdic t Sweep Point 0.009 0.15 0.001 RMS 0.011 -50.35 -13 37.35 Pass 401 0.15 30 0.01 RMS 0.16 -55.84 -13 42.84 Pass 5971 30 1000 0.1 RMS 900.3 -60.25 -13 47.25 Pass 19401 1000 1840 1 RMS 1787 -49.38 -13 36.38 Pass 1681 1840 1920 1 RMS 1909.8 18.05 60 41.95 Pass 401 1920 3000 1 RMS 2673 -46.92 -13 33.92 Pass 2161 3000 20000 1 RMS 19936 -26.8 -13 13.8 Pass 34001 Document No: Ti-EE26060596 Page 7 of 13 6. NB-IoT_Band2_BPSK_15kHz_1@0_High 6.1. NB-IoT Spurious Emission at Antenna Terminals_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Power (dBm) Limit (dBm) Margin (dB) Verdic t Sweep Point 0.009 0.15 0.001 RMS 0.01 -49.68 -13 36.68 Pass 401 0.15 30 0.01 RMS 0.15 -55.27 -13 42.27 Pass 5971 30 1000 0.1 RMS 905 -60.19 -13 47.19 Pass 19401 1000 1840 1 RMS 1787 -49.39 -13 36.39 Pass 1681 1840 1920 1 RMS 1909.8 18.5 60 41.5 Pass 401 1920 3000 1 RMS 2426 -46.17 -13 33.17 Pass 2161 3000 20000 1 RMS 19948 -26.74 -13 13.74 Pass 34001 Document No: Ti-EE26060596 Page 8 of 13 7. NB-IoT_Band2_BPSK_3.75kHz_1@0_High 7.1. NB-IoT Spurious Emission at Antenna Terminals_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Power (dBm) Limit (dBm) Margin (dB) Verdic t Sweep Point 0.009 0.15 0.001 RMS 0.009 -49.51 -13 36.51 Pass 401 0.15 30 0.01 RMS 0.15 -55.56 -13 42.56 Pass 5971 30 1000 0.1 RMS 859.2 -60 -13 47 Pass 19401 1000 1840 1 RMS 1807 -49.39 -13 36.39 Pass 1681 1840 1920 1 RMS 1909.8 18.68 60 41.32 Pass 401 1920 3000 1 RMS 2682 -46.95 -13 33.95 Pass 2161 3000 20000 1 RMS 19940 -26.84 -13 13.84 Pass 34001 Document No: Ti-EE26060596 Page 9 of 13 8. NB-IoT_Band2_QPSK_3.75kHz_1@0_High 8.1. NB-IoT Spurious Emission at Antenna Terminals_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Power (dBm) Limit (dBm) Margin (dB) Verdic t Sweep Point 0.009 0.15 0.001 RMS 0.011 -48.78 -13 35.78 Pass 401 0.15 30 0.01 RMS 0.15 -55.9 -13 42.9 Pass 5971 30 1000 0.1 RMS 900.5 -60.26 -13 47.26 Pass 19401 1000 1840 1 RMS 1808 -49.22 -13 36.22 Pass 1681 1840 1920 1 RMS 1909.8 18.49 60 41.51 Pass 401 1920 3000 1 RMS 2409 -46.78 -13 33.78 Pass 2161 3000 20000 1 RMS 19944 -26.81 -13 13.81 Pass 34001 Document No: Ti-EE26060596 Page 10 of 13 9. NB-IoT_Band2_BPSK_3.75kHz_1@0_Mid 9.1. NB-IoT Spurious Emission at Antenna Terminals_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Power (dBm) Limit (dBm) Margin (dB) Verdic t Sweep Point 0.009 0.15 0.001 RMS 0.012 -50.16 -13 37.16 Pass 401 0.15 30 0.01 RMS 0.15 -55 -13 42 Pass 5971 30 1000 0.1 RMS 905.1 -59.95 -13 46.95 Pass 19401 1000 1840 1 RMS 1777 -49.19 -13 36.19 Pass 1681 1840 1920 1 RMS 1880 19.23 60 40.77 Pass 401 1920 3000 1 RMS 2676 -46.87 -13 33.87 Pass 2161 3000 20000 1 RMS 19944 -26.77 -13 13.77 Pass 34001 Document No: Ti-EE26060596 Page 11 of 13 10. NB-IoT_Band2_QPSK_3.75kHz_1@0_Mid 10.1. NB-IoT Spurious Emission at Antenna Terminals_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Power (dBm) Limit (dBm) Margin (dB) …

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Document No: Ti-EE26060596 Page 1 of 11 Annex A.6 Band Edge Document No: Ti-EE26060596 Page 2 of 11 1. NB-IoT_Band2_BPSK_3.75kHz_1@0_Low 1.1. NB-IoT Band Edge for Lower_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Powe r (dBm) Limit (dBm ) Margi n (dB) Verdic t Swee p Point 1840 1848 1 RMS 1848 -45.07 -13 32.07 Pass 401 1848 1849 1 RMS 1849 -40.8 -13 27.8 Pass 3 1849 1849.9 0.02 RMS 1849.837 -22.76 -13 9.76 Pass 401 1849.9 1850 0.00003 9 RMS 1849.999 -19.59 -13 6.59 Pass 5129 1850 1860 0.02 RMS 1850.02 15.95 30 14.05 Pass 1001 Document No: Ti-EE26060596 Page 3 of 11 2. NB-IoT_Band2_QPSK_3.75kHz_1@0_Low 2.1. NB-IoT Band Edge for Lower_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Powe r (dBm) Limit (dBm ) Margi n (dB) Verdic t Swee p Point 1840 1848 1 RMS 1848 -45.93 -13 32.93 Pass 401 1848 1849 1 RMS 1849 -41.32 -13 28.32 Pass 3 1849 1849.9 0.02 RMS 1849.833 -23.44 -13 10.44 Pass 401 1849.9 1850 0.00003 9 RMS 1850 -21.39 -13 8.39 Pass 5129 1850 1860 0.02 RMS 1850.02 15.78 30 14.22 Pass 1001 Document No: Ti-EE26060596 Page 4 of 11 3. NB-IoT_Band2_BPSK_15kHz_1@0_Low 3.1. NB-IoT Band Edge for Lower_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Powe r (dBm) Limit (dBm ) Margi n (dB) Verdic t Swee p Point 1840 1848 1 RMS 1848 -46.18 -13 33.18 Pass 401 1848 1849 1 RMS 1849 -40.31 -13 27.31 Pass 3 1849 1849.9 0.02 RMS 1849.896 -18.35 -13 5.35 Pass 401 1849.9 1850 0.0001 5 RMS 1849.995 -14.76 -13 1.76 Pass 1333 1850 1860 0.02 RMS 1850.02 14.2 30 15.8 Pass 1001 Document No: Ti-EE26060596 Page 5 of 11 4. NB-IoT_Band2_QPSK_15kHz_1@0_Low 4.1. NB-IoT Band Edge for Lower_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Powe r (dBm) Limit (dBm ) Margi n (dB) Verdic t Swee p Point 1840 1848 1 RMS 1848 -48.01 -13 35.01 Pass 401 1848 1849 1 RMS 1849 -44.73 -13 31.73 Pass 3 1849 1849.9 0.02 RMS 1849.844 -26.69 -13 13.69 Pass 401 1849.9 1850 0.0001 5 RMS 1849.999 -18.12 -13 5.12 Pass 1333 1850 1860 0.02 RMS 1850.02 13.86 30 16.14 Pass 1001 Document No: Ti-EE26060596 Page 6 of 11 5. NB-IoT_Band2_QPSK_15kHz_12@0_Low 5.1. NB-IoT Band Edge for Lower_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Power (dBm) Limit (dBm) Margi n (dB) Verdic t Sweep Point 1840 1848 1 RMS 1848 -49.73 -13 36.73 Pass 401 1848 1849 1 RMS 1849 -47.91 -13 34.91 Pass 3 1849 1849.994 0.002 RMS 1849.982 -32.45 -13 19.45 Pass 993 1849.994 1850 0.002 RMS 1849.999 -27.31 -13 14.31 Pass 401 1850 1860 0.02 RMS 1850.08 -1.73 30 31.73 Pass 1001 Document No: Ti-EE26060596 Page 7 of 11 1. NB-IoT_Band2_QPSK_3.75kHz_1@47_High 1.1. NB-IoT Band Edge for Upper_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Powe r (dBm) Limit (dBm ) Margi n (dB) Verdic t Swee p Point 1900 1910 0.02 RMS 1909.98 13.84 30 16.16 Pass 1001 1910 1910.1 0.00003 9 RMS 1910.001 -24.81 -13 11.81 Pass 5129 1910.1 1911 0.02 RMS 1910.174 -23.29 -13 10.29 Pass 401 1911 1912 1 RMS 1911 -39.34 -13 26.34 Pass 3 1912 1920 1 RMS 1912 -40.91 -13 27.91 Pass 401 Document No: Ti-EE26060596 Page 8 of 11 2. NB-IoT_Band2_BPSK_3.75kHz_1@47_High 2.1. NB-IoT Band Edge for Upper_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Powe r (dBm) Limit (dBm ) Margi n (dB) Verdic t Swee p Point 1900 1910 0.02 RMS 1909.98 15.63 30 14.37 Pass 1001 1910 1910.1 0.00003 9 RMS 1910 -21.28 -13 8.28 Pass 5129 1910.1 1911 0.02 RMS 1910.174 -23.01 -13 10.01 Pass 401 1911 1912 1 RMS 1911 -38.86 -13 25.86 Pass 3 1912 1920 1 RMS 1912 -40.76 -13 27.76 Pass 401 Document No: Ti-EE26060596 Page 9 of 11 3. NB-IoT_Band2_BPSK_15kHz_1@11_High 3.1. NB-IoT Band Edge for Upper_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Powe r (dBm) Limit (dBm ) Margi n (dB) Verdic t Swee p Point 1900 1910 0.02 RMS 1909.86 16.13 30 13.87 Pass 1001 1910 1910.1 0.0001 5 RMS 1910 -41.28 -13 28.28 Pass 1333 1910.1 1911 0.02 RMS 1910.1 -37.44 -13 24.44 Pass 401 1911 1912 1 RMS 1911 -39.5 -13 26.5 Pass 3 1912 1920 1 RMS 1912 -41.07 -13 28.07 Pass 401 Document No: Ti-EE26060596 Page 10 of 11 4. NB-IoT_Band2_QPSK_15kHz_1@11_High 4.1. NB-IoT Band Edge for Upper_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Powe r (dBm) Limit (dBm ) Margi n (dB) Verdic t Swee p Point 1900 1910 0.02 RMS 1909.86 13.79 30 16.21 Pass 1001 1910 1910.1 0.0001 5 RMS 1910.008 -42.53 -13 29.53 Pass 1333 1910.1 1911 0.02 RMS 1910.1 -36.67 -13 23.67 Pass 401 1911 1912 1 RMS 1911 -39.99 -13 26.99 Pass 3 1912 1920 1 RMS 1912 -41.16 -13 28.16 Pass 401 Document No: Ti-EE26060596 Page 11 of 11 5. NB-IoT_Band2_QPSK_15kHz_12@0_High 5.1. NB-IoT Band Edge for Upper_Part22-24-27(NTNV) Start Frequenc y (MHz) Stop Frequenc y (MHz) RBW (MHz) Detecto r Frequenc y (MHz) Power (dBm) Limit (dBm) Margin (dB) Verdic t Sweep Point 1900 1910 0.02 RMS 1909.9 -1.25 30 31.25 Pass 1001 1910 1910.006 0.002 RMS 1910.001 -26.9 -13 13.9 Pass 401 1910.006 1911 0.002 RMS 1910.006 -34.45 -13 21.45 Pass 993 1911 1912 1 RMS 1911 -40.46 -13 27.46 Pass 3 1912 1920 1 RMS 1913.04 -40.34 -13 27.34 Pass 401 --BLANK BELOW--

Document No: Ti-EE26060596 Page 1 of 2 Annex A.7 Field Strength of Spurious Radiation Band:NB-IOT B2,Channel:MID range BW:3.75K Frequency (MHz) Result (dBm) Factor (dB) Limit (dBm) Margin (dB) Table (o) ANT EUT Verdict 1879.800 -40.09 0.19 -13.0 27.09 326.00 Horizontal Horizontal N/A 1959.800 -35.95 0.93 -13.0 22.95 282.00 Horizontal Horizontal N/A 2968.100 -53.28 8.86 -13.0 40.28 247.00 Horizontal Horizontal Pass 6682.200 -48.54 12.90 -13.0 35.54 306.00 Horizontal Horizontal Pass 15498.838 -51.22 19.00 -13.0 38.22 22.00 Horizontal Horizontal Pass 17904.386 -49.60 21.10 -13.0 36.60 0.00 Horizontal Horizontal Pass Document No: Ti-EE26060596 Page 2 of 2 Band:NB-IOT B2,Channel:MID range BW:3.75K Frequency (MHz) Result (dBm) Factor (dB) Limit (dBm) Margin (dB) Table (o) ANT EUT Verdict 1777.400 -55.31 -0.61 -13.0 42.31 360.00 Vertical Horizontal Pass 1879.900 -39.96 0.19 -13.0 26.96 257.00 Vertical Horizontal N/A 1959.700 -45.69 0.94 -13.0 32.69 14.00 Vertical Horizontal N/A 5639.800 -50.07 8.15 -13.0 37.07 300.00 Vertical Horizontal Pass 9399.474 -50.11 9.90 -13.0 37.11 330.00 Vertical Horizontal Pass 15496.300 -51.05 18.96 -13.0 38.05 25.00 Vertical Horizontal Pass --BLANK BELOW--

Report No.: Ti-EE26060596-501 Tel: +86-755-66850100 E-mail: [email protected] Page No. 1 / 49 Web: www.titcgroup.com Template No.: TRP-FCC (2024-06) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen TEST REPORT Applicant: Ningbo Zlink Technology Co., Ltd. Address: No.1, Song Cui Road, Dongqian Lake Tourism Resort, Ningbo, Zhejiang, China Equipment Type: ultrasonic water meter Model Name: LXC (refer to section 2.3) Brand Name: ZLINK FCC ID: 2BWPU-ZLNB Test Standard: 47 CFR Part 2 (Others refer to chapter 3.1) Sample Arrival Date: Jun. 16, 2026 Test Date: Jun. 17, 2026 - Jun. 30, 2026 Date of Issue: Jul. 10, 2026 ISSUED BY: Shenzhen BALUN Technology Co., Ltd. Tested by: Liu Juren Checked by: Huang Jinsheng Approved by: Liao Jianming (Technical Director) _______________ _______________ _______________ Report No.: Ti-EE26060596-501 Tel: +86-755-66850100 E-mail: [email protected] Page No. 2 / 49 Web: www.titcgroup.com Template No.: TRP-FCC (2024-06) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen Revision History Version Issue Date Revisions Content Rev. 01 Jul. 10, 2026 Initial Issue TABLE OF CONTENTS 1 GENERAL INFORMATION ........................................................................................................ 4 1.1 Test Laboratory ................................................................................................................... 4 1.2 Test Location ....................................................................................................................... 4 2 PRODUCT INFORMATION ....................................................................................................... 5 2.1 Applicant Information ........................................................................................................... 5 2.2 Manufacturer Information .................................................................................................... 5 2.3 General Description for Equipment under Test (EUT) ......................................................... 5 2.4 Technical Information .......................................................................................................... 6 3 SUMMARY OF TEST RESULTS ............................................................................................... 7 3.1 Test Standards .................................................................................................................... 7 3.2 Test Verdict ......................................................................................................................... 8 3.3 Measurement Uncertainty ................................................................................................... 8 4 GENERAL TEST CONFIGURATIONS ...................................................................................... 9 4.1 Test Environments .............................................................................................................. 9 4.2 Test Equipment List ............................................................................................................. 9 4.3 Test Configurations ........................................................................................................... 10 4.4 Test Setup ......................................................................................................................... 12 5 TEST ITEMS ........................................................................................................................... 14 5.1 Transmitter Radiated Power (EIRP/ERP) .......................................................................... 14 5.2 Peak to Average Ratio....................................................................................................... 18 5.3 Occupied Bandwidth ......................................................................................................... 20 5.4 Frequency Stability ............................................................…

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