2BR3K-DBCAM-M52-1Doorbell Camera

FCC ID: 2BR3K-DBCAM-M52-1 Internal Photos of the EUT Product: Doorbell Camera Model: M52 FCC ID: 2BR3K-DBCAM-M52-1 FCC ID: 2BR3K-DBCAM-M52-1 FCC ID: 2BR3K-DBCAM-M52-1 SRD ANT BLE/WIFI ANT FCC ID: 2BR3K-DBCAM-M52-1

FCC ID: 2BR3K-DBCAM-M52-1 Test Setup Photos of the EUT Product: Doorbell Camera Model: M52 Radiated Emission FCC ID: 2BR3K-DBCAM-M52-1 Conducted Emission RF conducted test

1 FCC Appendix RF Test Data for BLE FCC ID : 2BR3K-DBCAM-M52-1 Company : HK EKO ELECTRONICS LIMITED EUT : Doorbell Camera Model Number : M52 Report No. : CTA26042002901 Reviewed By : Eric Wang 2 Duty Cycle Condition Mode Frequency (MHz) Duty Cycle (%) Correction Factor (dB) NVNT BLE 1M 2402 87.31 0.59 NVNT BLE 1M 2440 87.11 0.60 NVNT BLE 1M 2480 87.11 0.60 NVNT BLE 2M 2402 60.84 2.16 NVNT BLE 2M 2440 61.04 2.14 NVNT BLE 2M 2480 61.04 2.14 3 Test Graphs Duty Cycle NVNT BLE 1M 2402MHz Duty Cycle NVNT BLE 1M 2440MHz 4 Duty Cycle NVNT BLE 1M 2480MHz Duty Cycle NVNT BLE 2M 2402MHz 5 Duty Cycle NVNT BLE 2M 2440MHz Duty Cycle NVNT BLE 2M 2480MHz 6 Maximum Conducted Output Power Condition Mode Frequency (MHz) Conducted Power (dBm) Limit (dBm) Verdict NVNT BLE 1M 2402 3.23 30 Pass NVNT BLE 1M 2440 6.64 30 Pass NVNT BLE 1M 2480 3.91 30 Pass NVNT BLE 2M 2402 3.30 30 Pass NVNT BLE 2M 2440 6.88 30 Pass NVNT BLE 2M 2480 4.03 30 Pass 7 Test Graphs Power NVNT BLE 1M 2402MHz Power NVNT BLE 1M 2440MHz 8 Power NVNT BLE 1M 2480MHz Power NVNT BLE 2M 2402MHz 9 Power NVNT BLE 2M 2440MHz Power NVNT BLE 2M 2480MHz 10 -6dB Bandwidth Condition Mode Frequency (MHz) -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT BLE 1M 2402 0.660 0.5 Pass NVNT BLE 1M 2440 0.676 0.5 Pass NVNT BLE 1M 2480 0.660 0.5 Pass NVNT BLE 2M 2402 1.162 0.5 Pass NVNT BLE 2M 2440 1.180 0.5 Pass NVNT BLE 2M 2480 1.184 0.5 Pass 11 Test Graphs -6dB Bandwidth NVNT BLE 1M 2402MHz -6dB Bandwidth NVNT BLE 1M 2440MHz 12 -6dB Bandwidth NVNT BLE 1M 2480MHz -6dB Bandwidth NVNT BLE 2M 2402MHz 13 -6dB Bandwidth NVNT BLE 2M 2440MHz -6dB Bandwidth NVNT BLE 2M 2480MHz 14 Maximum Power Spectral Density Level Condition Mode Frequency (MHz) Conducted PSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNT BLE 1M 2402 -12.80 8 Pass NVNT BLE 1M 2440 -9.43 8 Pass NVNT BLE 1M 2480 -12.34 8 Pass NVNT BLE 2M 2402 -15.76 8 Pass NVNT BLE 2M 2440 -12.15 8 Pass NVNT BLE 2M 2480 -15.03 8 Pass 15 Test Graphs PSD NVNT BLE 1M 2402MHz PSD NVNT BLE 1M 2440MHz 16 PSD NVNT BLE 1M 2480MHz PSD NVNT BLE 2M 2402MHz 17 PSD NVNT BLE 2M 2440MHz PSD NVNT BLE 2M 2480MHz 18 Band Edge Condition Mode Frequency (MHz) Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2402 -54.06 -20 Pass NVNT BLE 1M 2480 -53.93 -20 Pass NVNT BLE 2M 2402 -52.55 -20 Pass NVNT BLE 2M 2480 -52.26 -20 Pass 19 Test Graphs Band Edge NVNT BLE 1M 2402MHz Ref Band Edge NVNT BLE 1M 2402MHz Emission 20 Band Edge NVNT BLE 1M 2480MHz Ref Band Edge NVNT BLE 1M 2480MHz Emission 21 Band Edge NVNT BLE 2M 2402MHz Ref Band Edge NVNT BLE 2M 2402MHz Emission 22 Band Edge NVNT BLE 2M 2480MHz Ref Band Edge NVNT BLE 2M 2480MHz Emission 23 Conducted RF Spurious Emission Condition Mode Frequency (MHz) Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2402 -41.68 -20 Pass NVNT BLE 1M 2440 -44.64 -20 Pass NVNT BLE 1M 2480 -42.28 -20 Pass NVNT BLE 2M 2402 -40.79 -20 Pass NVNT BLE 2M 2440 -44.50 -20 Pass NVNT BLE 2M 2480 -41.36 -20 Pass 24 Test Graphs Tx. Spurious NVNT BLE 1M 2402MHz Ref Tx. Spurious NVNT BLE 1M 2402MHz Emission 25 Tx. Spurious NVNT BLE 1M 2440MHz Ref Tx. Spurious NVNT BLE 1M 2440MHz Emission 26 Tx. Spurious NVNT BLE 1M 2480MHz Ref Tx. Spurious NVNT BLE 1M 2480MHz Emission 27 Tx. Spurious NVNT BLE 2M 2402MHz Ref Tx. Spurious NVNT BLE 2M 2402MHz Emission 28 Tx. Spurious NVNT BLE 2M 2440MHz Ref Tx. Spurious NVNT BLE 2M 2440MHz Emission 29 Tx. Spurious NVNT BLE 2M 2480MHz Ref Tx. Spurious NVNT BLE 2M 2480MHz Emission 30 Emissions in Restricted Bands Test Mode Ch Freq (MHz) Detector Freq [MHz] Result [dBm] Gain [dBi] DC Factor [dB] Result [dBuV/m] Limit [dBuV/m] Verdict BLE 1M Low 2402 AV 2310.000 -59.58 2.99 0.60 39.21 ≤54 PASS AV 2356.000 -59.56 2.99 0.60 39.23 ≤54 PASS AV 2390.000 -58.95 2.99 0.60 39.84 ≤54 PASS Peak 2310.000 -47.24 2.99 0.00 50.95 ≤74 PASS Peak 2356.000 -48.47 2.99 0.00 49.72 ≤74 PASS Peak 2390.000 -47.50 2.99 0.00 50.69 ≤74 PASS High 2480 AV 2483.500 -50.73 2.99 0.60 48.06 ≤54 PASS AV 2500.000 -58.94 2.99 0.60 39.85 ≤54 PASS AV 2525.000 -58.56 2.99 0.60 40.23 ≤54 PASS Peak 2483.500 -39.64 2.99 0.00 58.55 ≤74 PASS Peak 2500.000 -47.95 2.99 0.00 50.24 ≤74 PASS Peak 2525.000 -47.10 2.99 0.00 51.09 ≤74 PASS BLE 2M Low 2402 AV 2310.000 -59.73 2.99 2.14 40.60 ≤54 PASS AV 2356.000 -59.38 2.99 2.14 40.95 ≤54 PASS AV 2390.000 -59.12 2.99 2.14 41.21 ≤54 PASS Peak 2310.000 -50.01 2.99 0.00 48.18 ≤74 PASS Peak 2319.500 -46.76 2.99 0.00 51.43 ≤74 PASS Peak 2390.000 -47.92 2.99 0.00 50.27 ≤74 PASS High 2480 AV 2483.500 -50.92 2.99 2.16 49.43 ≤54 PASS AV 2500.000 -58.44 2.99 2.16 41.91 ≤54 PASS AV 2525.000 -58.77 2.99 2.16 41.58 ≤54 PASS Peak 2483.500 -39.80 2.99 0.00 58.39 ≤74 PASS Peak 2500.000 -48.66 2.99 0.00 49.53 ≤74 PASS Peak 2519.700 -47.35 2.99 0.00 50.84 ≤74 PASS Note：1. The limit in dBm for average detector is conversion from 54dBuV/m, according to 15.209(a). The limit in dBm for peak detector is 20dB above the limit of average detector in dBm. 31 Test Graphs NVNT BLE 1M 2402MHz AV NVNT BLE 1M 2402MHz PK 32 NVNT BLE 1M 2480MHz AV NVNT BLE 1M 2480MHz PK 33 Test Graphs NVNT BLE 2M 2402MHz AV NVNT BLE 2M 2402MHz PK 34 NVNT BLE 2M 2480MHz AV NVNT BLE 2M 2480MHz PK

1 FCC Appendix RF Test Data for 2.4GWIFI FCC ID : 2BR3K-DBCAM-M52-1 Company : HK EKO ELECTRONICS LIMITED EUT : Doorbell Camera Model Number : M52 Report No. : CTA26042002902 Reviewed By : Eric Wang 2 Duty Cycle Condition Mode Frequency (MHz) Duty Cycle (%) Correction Factor (dB) NVNT b 2412 75.32 1.23 NVNT b 2437 83.52 0.78 NVNT b 2462 81.62 0.88 NVNT g 2412 74.43 1.28 NVNT g 2437 73.73 1.32 NVNT g 2462 74.13 1.30 NVNT n20 2412 75.92 1.20 NVNT n20 2437 73.23 1.35 NVNT n20 2462 73.43 1.34 3 Test Graphs Duty Cycle NVNT b 2412MHz Duty Cycle NVNT b 2437MHz 4 Duty Cycle NVNT b 2462MHz Duty Cycle NVNT g 2412MHz 5 Duty Cycle NVNT g 2437MHz Duty Cycle NVNT g 2462MHz 6 Duty Cycle NVNT n20 2412MHz Duty Cycle NVNT n20 2437MHz 7 Duty Cycle NVNT n20 2462MHz 8 Maximum Conducted (Peak) Output Power Condition Mode Frequency (MHz) Conducted Power (dBm) Limit (dBm) Verdict NVNT b 2412 13.67 30 Pass NVNT b 2437 13.82 30 Pass NVNT b 2462 13.69 30 Pass NVNT g 2412 12.44 30 Pass NVNT g 2437 12.49 30 Pass NVNT g 2462 12.10 30 Pass NVNT n20 2412 11.91 30 Pass NVNT n20 2437 12.68 30 Pass NVNT n20 2462 12.40 30 Pass 9 -6dB Bandwidth Condition Mode Frequency (MHz) -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT b 2412 8.675 0.5 Pass NVNT b 2437 9.151 0.5 Pass NVNT b 2462 9.148 0.5 Pass NVNT g 2412 16.37 0.5 Pass NVNT g 2437 16.43 0.5 Pass NVNT g 2462 16.45 0.5 Pass NVNT n20 2412 17.53 0.5 Pass NVNT n20 2437 17.58 0.5 Pass NVNT n20 2462 17.63 0.5 Pass 10 Test Graphs -6dB Bandwidth NVNT b 2412MHz Ant1 -6dB Bandwidth NVNT b 2437MHz Ant1 11 -6dB Bandwidth NVNT b 2462MHz Ant1 -6dB Bandwidth NVNT g 2412MHz Ant1 12 -6dB Bandwidth NVNT g 2437MHz Ant1 -6dB Bandwidth NVNT g 2462MHz Ant1 13 -6dB Bandwidth NVNT n20 2412MHz Ant1 -6dB Bandwidth NVNT n20 2437MHz Ant1 14 -6dB Bandwidth NVNT n20 2462MHz Ant1 15 Maximum Power Spectral Density Level Condition Mode Frequency (MHz) Conducted PSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNT b 2412 -8.79 8 Pass NVNT b 2437 -8.14 8 Pass NVNT b 2462 -8.50 8 Pass NVNT g 2412 -12.48 8 Pass NVNT g 2437 -12.17 8 Pass NVNT g 2462 -10.01 8 Pass NVNT n20 2412 -13.12 8 Pass NVNT n20 2437 -11.86 8 Pass NVNT n20 2462 -11.64 8 Pass 16 Test Graphs PSD NVNT b 2412MHz PSD NVNT b 2437MHz 17 PSD NVNT b 2462MHz PSD NVNT g 2412MHz 18 PSD NVNT g 2437MHz PSD NVNT g 2462MHz 19 PSD NVNT n20 2412MHz PSD NVNT n20 2437MHz 20 PSD NVNT n20 2462MHz 21 Band Edge Condition Mode Frequency (MHz) Max Value (dBc) Limit (dBc) Verdict NVNT b 2412 -54.55 -20 Pass NVNT b 2462 -54.73 -20 Pass NVNT g 2412 -40.32 -20 Pass NVNT g 2462 -36.54 -20 Pass NVNT n20 2412 -40.41 -20 Pass NVNT n20 2462 -40.08 -20 Pass 22 Test Graphs Band Edge NVNT b 2412MHz Ref Band Edge NVNT b 2412MHz Emission 23 Band Edge NVNT b 2462MHz Ref Band Edge NVNT b 2462MHz Emission 24 Band Edge NVNT g 2412MHz Ref Band Edge NVNT g 2412MHz 1 Emission 25 Band Edge NVNT g 2462MHz Ref Band Edge NVNT g 2462MHz Emission 26 Band Edge NVNT n20 2412MHz Ref Band Edge NVNT n20 2412MHz Emission 27 Band Edge NVNT n20 2462MHz Ref Band Edge NVNT n20 2462MHz Emission 28 Conducted RF Spurious Emission Condition Mode Frequency (MHz) Max Value (dBc) Limit (dBc) Verdict NVNT b 2412 -43.54 -20 Pass NVNT b 2437 -43.87 -20 Pass NVNT b 2462 -44.14 -20 Pass NVNT g 2412 -40.24 -20 Pass NVNT g 2437 -41.28 -20 Pass NVNT g 2462 -41.99 -20 Pass NVNT n20 2412 -40.04 -20 Pass NVNT n20 2437 -40.93 -20 Pass NVNT n20 2462 -40.06 -20 Pass 29 Test Graphs Tx. Spurious NVNT b 2412MHz Ref Tx. Spurious NVNT b 2412MHz Emission 30 Tx. Spurious NVNT b 2437MHz Ref Tx. Spurious NVNT b 2437MHz Emission 31 Tx. Spurious NVNT b 2462MHz Ref Tx. Spurious NVNT b 2462MHz Emission 32 Tx. Spurious NVNT g 2412MHz Ref Tx. Spurious NVNT g 2412MHz Emission 33 Tx. Spurious NVNT g 2437MHz Ref Tx. Spurious NVNT g 2437MHz Emission 34 Tx. Spurious NVNT g 2462MHz Ref Tx. Spurious NVNT g 2462MHz Emission 35 Tx. Spurious NVNT n20 2412MHz Ref Tx. Spurious NVNT n20 2412MHz Emission 36 Tx. Spurious NVNT n20 2437MHz Ref Tx. Spurious NVNT n20 2437MHz Emission 37 Tx. Spurious NVNT n20 2462MHz Ref Tx. Spurious NVNT n20 2462MHz Emission 38 Emissions in Restricted Bands Test Mode Ch Freq (MHz) Detector Freq [MHz] Result [dBm] Gain [dBi] DC Factor [dB] Result [dBuV/m] Limit [dBuV/m] Verdict b Low 2412 AV 2310.000 -53.92 2.99 1.17 45.44 ≤54 PASS AV 2365.000 -53.22 2.99 1.17 46.14 ≤54 PASS AV 2390.000 -52.52 2.99 1.17 46.84 ≤54 PASS Peak 2310.000 -43.19 2.99 0.00 55.00 ≤74 PASS Peak 2365.000 -43.14 2.99 0.00 55.05 ≤74 PASS Peak 2390.000 -41.58 2.99 0.00 56.61 ≤74 PASS High 2462 AV 2483.500 -52.00 2.99 0.86 47.05 ≤54 PASS AV 2495.000 -52.59 2.99 0.86 46.46 ≤54 PASS AV 2500.000 -51.92 2.99 0.86 47.13 ≤54 PASS Peak 2483.500 -41.65 2.99 0.00 56.54 ≤74 PASS Peak 2495.000 -41.07 2.99 0.00 57.12 ≤74 PASS Peak 2500.000 -42.61 2.99 0.00 55.58 ≤74 PASS g Low 2412 AV 2310.000 -53.52 2.99 1.25 45.92 ≤54 PASS AV 2365.000 -53.24 2.99 1.25 46.20 ≤54 PASS AV 2390.000 -48.31 2.99 1.25 51.13 ≤54 PASS Peak 2310.000 -42.23 2.99 0.00 55.96 ≤74 PASS Peak 2365.000 -41.84 2.99 0.00 56.35 ≤74 PASS Peak 2390.000 -59.64 2.99 0.00 38.55 ≤74 PASS High 2462 AV 2483.500 -48.22 2.99 1.34 51.31 ≤54 PASS AV 2495.000 -51.89 2.99 1.34 47.64 ≤54 PASS AV 2500.000 -51.98 2.99 1.34 47.55 ≤54 PASS Peak 2483.500 -30.67 2.99 0.00 67.52 ≤74 PASS Peak 2495.000 -40.39 2.99 0.00 57.80 ≤74 PASS Peak 2500.000 -41.53 2.99 0.00 56.66 ≤74 PASS n20 Low 2412 AV 2310.000 -53.46 2.99 1.34 46.07 ≤54 PASS AV 2365.000 -52.19 2.99 1.34 47.34 ≤54 PASS AV 2390.000 -46.50 2.99 1.34 53.03 ≤54 PASS Peak 2310.000 -43.12 2.99 0.00 55.07 ≤74 PASS Peak 2365.000 -42.14 2.99 0.00 56.05 ≤74 PASS Peak 2390.000 -27.70 2.99 0.00 70.49 ≤74 PASS High 2462 AV 2483.500 -47.11 2.99 1.30 52.38 ≤54 PASS AV 2495.000 -51.98 2.99 1.30 47.51 ≤54 PASS AV 2500.000 -52.18 2.99 1.30 47.31 ≤54 PASS Peak 2483.500 -31.46 2.99 0.00 66.73 ≤74 PASS Peak 2495.000 -39.75 2.99 0.00 58.44 ≤74 PASS Peak 2500.000 -41.86 2.99 0.00 56.33 ≤74 PASS 1. Note：The limit in dBm for average detector is conversion from 54dBuV/m, according t…

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Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn FCC PART 15 SUBPART CTEST REPORT FCC PART 15.247 Report Reference No. .................... : FCC ID. ............................................ : CTA26042002902 2BR3K-DBCAM-M52-1 Compiled by ( position+printedname+signature) .. : File administrators Zoey Cao Supervised by (position+printedname+signature) ... : Project Engineer Ace Chai Approved by (position+printedname+signature) ... : RF Manager Eric Wang Date of issue .................................... : May 09, 2026 Testing Laboratory Name ............. : Shenzhen CTA Testing Technology Co., Ltd. Address ............................................ : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Applicant’s name ........................... : HK EKO ELECTRONICS LIMITED Address ............................................ : FLAT/RM 1 14/F HENLEY INDUSTRIAL CENTRE, 9-15 BUTE STREET, MONG KOK KL,HONGKONG, China Test specification........................... : Standard .......................................... : FCC Part 15.247 TRF Originator ................................. : Shenzhen CTA Testing Technology Co., Ltd. Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., Ltd.takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description ..................... : Doorbell Camera Trade Mark ....................................... : N/A Manufacturer .................................... : HK EKO ELECTRONICS LIMITED Model/Type reference ...................... : M52 Listed Models ................................... : P52,T52,U52,V52,N52 Modulation Type .............................. : CCK/DSSS/OFDM Operation Frequency ....................... : From 2412 - 2462MHz Rating ............................................... : Rechargeable Li-ion Battery DC 3.7V Result ............................................... : PASS Report No.:CTA26042002902 Page 2 of 38 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : Doorbell Camera Model /Type : M52 Listed Models : P52, T52, U52, V52, N52 Model difference : M52 is tested model, other models are derivative models. The models are identical in circuit and PCB layout, only different on the model names, color and appearance. So the test data of M52 can represent the remaining models. Applicant : HK EKO ELECTRONICS LIMITED Address : FLAT/RM 1 14/F HENLEY INDUSTRIAL CENTRE, 9-15 BUTE STREET, MONG KOK KL, HONGKONG, China Manufacturer : HK EKO ELECTRONICS LIMITED Address : FLAT/RM 1 14/F HENLEY INDUSTRIAL CENTRE, 9-15 BUTE STREET, MONG KOK KL, HONGKONG, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.:CTA26042002902 Page 3 of 38 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 TEST STANDARDS ...................................................................................................................................... 4 2 SUMMARY .................................................................................................................................................... 5 2.1 General Remarks .............................................................................................................................. 5 2.2 Product Description .......................................................................................................................... 5 2.3 Equipment Under Test ...................................................................................................................... 5 2.4 Short description of the Equipment under Test (EUT) ..................................................................... 5 2.5 EUT configuration ............................................................................................................................. 6 2.6 EUT operation mode......................................................................................................................... 6 2.7 Block Diagram of Test Setup ............................................................................................................ 6 2.8 Related Submittal(s) / Grant (s) ........................................................................................................ 7 2.9 Modifications ..................................................................................................................................... 7 3 TEST ENVIRONMENT ................................................................................................................................. 8 3.1 Address of the test laboratory ........................................................................................................... 8 3.2 Test Facility .....................................................................…

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Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn FCC PART 15 SUBPART CTEST REPORT FCC PART 15.247 Report Reference No. .................... : FCC ID. ............................................ : CTA26042002901 2BR3K-DBCAM-M52-1 Compiled by ( position+printedname+signature) .. : File administrators Zoey Cao Supervised by (position+printedname+signature) ... : Project Engineer Ace Chai Approved by (position+printedname+signature) ... : RF Manager Eric Wang Date of issue .................................... : May 09, 2026 Testing Laboratory Name .............. : Shenzhen CTA Testing Technology Co., Ltd. Address ........................................... : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Applicant’s name............................ : HK EKO ELECTRONICS LIMITED Address ............................................ : FLAT/RM 1 14/F HENLEY INDUSTRIAL CENTRE, 9-15 BUTE STREET, MONG KOK KL,HONGKONG, China Test specification ........................... : Standard ........................................... : FCC Part 15.247 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Equipment description .................. : Doorbell Camera Trade Mark ....................................... : N/A Manufacturer .................................... : HK EKO ELECTRONICS LIMITED Model/Type reference ...................... : M52 Listed Models ................................... : P52,T52,U52,V52,N52 Modulation ........................................ : GFSK Frequency ........................................ : From 2402MHz to 2480MHz Ratings ............................................. : Rechargeable Li-ion Battery DC 3.7V Result ............................................... : PASS Report No.: CTA26042002901 Page 2 of 44 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : Doorbell Camera Model /Type : M52 Listed Models : P52, T52, U52, V52, N52 Model difference : M52 is tested model, other models are derivative models. The models are identical in circuit and PCB layout, only different on the model names, color and appearance. So the test data of M52 can represent the remaining models. Applicant : HK EKO ELECTRONICS LIMITED Address : FLAT/RM 1 14/F HENLEY INDUSTRIAL CENTRE, 9-15 BUTE STREET, MONG KOK KL, HONGKONG, China Manufacturer : HK EKO ELECTRONICS LIMITED Address : FLAT/RM 1 14/F HENLEY INDUSTRIAL CENTRE, 9-15 BUTE STREET, MONG KOK KL, HONGKONG, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: CTA26042002901 Page 3 of 44 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 TEST STANDARDS ...................................................................................................................................... 4 2 SUMMARY .................................................................................................................................................... 5 2.1 General Remarks .............................................................................................................................. 5 2.2 Product Description* ......................................................................................................................... 5 2.3 Equipment Under Test ...................................................................................................................... 5 2.4 Short description of the Equipment under Test (EUT) ..................................................................... 5 2.5 EUT configuration ............................................................................................................................. 5 2.6 EUT operation mode......................................................................................................................... 6 2.7 Block Diagram of Test Setup ............................................................................................................ 6 2.8 Related Submittal(s) / Grant (s) ........................................................................................................ 6 2.9 Modifications ..................................................................................................................................... 6 3 TEST ENVIRONMENT ................................................................................................................................. 7 3.1 Address of the test laboratory ........................................................................................................... 7 3.2 Test Facility ....................................................................................................................................... 7 3.3 Environmenta…

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Shenzhen Zhongcheng communication products Co., Ltd Page 1 Antenna Approval Sheet For M52 Project CustomerEKENINNOVATIONProject M52 BandWiFi2.4GHZ ZCPNT21-043 VersionR:AData 2025-6-17 RF CheckedBy ConfirmedBy CustConfirm Shenzhen Zhongcheng communication products Co., Ltd Page 2 1.Manufacturer information Company
name：Shenzhen
Zhongcheng
communication
products
Co.,
Ltd Address:
5th
floor,
building
C,
Huafeng
Industrial
Zone,
Liuxian
Road,
71
District,
Bao'an,
Shenzhen Tel：0755-29995224 Fax：0755-27863505 2. Summary of the DUT M52 Picture Antenna Picture 3. Electrical Specification: Antenna typesBuilt-in WIFI Antenna Frequency2400-2500 MHZ Impedance 50 Ω VSWR< 2.0 PeaK Gain 2.99dBi REF Efficiency>35% Antenna MaterialCopper tube+coaxial line Connector Type1.13 MHF-1-Plug Shenzhen Zhongcheng communication products Co., Ltd Page 3 4. Test Condition 4.1 TEST ITEMTESTING INSTRUMENTREMARKS PASSIVE TEST 1.Antenna Gain 2. S.W.R 3. Return Loss 4. Radiation Pattern 1. Network analyzer （ R&S ZVL6 ） 2. Network analyzer （ HP8753D ） 4.2 Matching CircuitThe matching circuit was Default 4.3Antenna installation diagram: 5.1 RFPerformance –WIFIAntenna 5.1 Passive parameters Freq.(MHz)24002410242024302440245024602470248024902500 Gain (dBi)2.632.682.712.992.62.232.62.491.961.771.7 5.2 S Parameter Frequency (MHz)240024502480 Return Loss(dB)-22-18-16.9 VSWR1.251.321.36 Shenzhen Zhongcheng communication products Co., Ltd Page 4 5.3Antenna 3D Radiation Pattern (Unit:dbi) Shenzhen Zhongcheng communication products Co., Ltd Page 5 6. ME Drawing for the antenna

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn RF Exposure MPE Report Reference No. ..................... : FCC ID.............................................. : CTA26042002904 2BR3K-DBCAM-M52-1 Compiled by ( position+printedname+signature) .. : File administratorsZoey Cao Supervised by (position+printedname+signature) ... : Project Engineer Ace Chai Approved by (position+printedname+signature) ... : RF Manager Eric Wang Date of issue .................................... : May 09, 2026 Testing Laboratory Name .............. : Shenzhen CTA Testing Technology Co., Ltd. Address............................................ : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Applicant’s name ............................ : HK EKO ELECTRONICS LIMITED Address............................................ : FLAT/RM 1 14/F HENLEY INDUSTRIAL CENTRE, 9-15 BUTE STREET, MONG KOK KL,HONGKONG, China Standard ........................................... : 47CFR §1.1310 47CFR §2.1091 KDB447498 D01 General RF Exposure Guidance v06 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purpses as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description ..................... : Doorbell Camera Trade Mark ....................................... : N/A Manufacturer .................................... : HK EKO ELECTRONICS LIMITED Model/Type reference ...................... : M52 Listed Models ................................... : P52,T52,U52,V52,N52 Rating ............................................... : Rechargeable Li-ion Battery DC 3.7V Result ............................................... : PASS Report No.: CTA26042002904 Page 2 of 9 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : Doorbell Camera Model /Type : M52 Listed Models : P52, T52, U52, V52, N52 Model difference : M52 is tested model, other models are derivative models. The models are identical in circuit and PCB layout, oonly different on the model names, color and appearance. So the test data of M52 can represent the remaining models. Applicant : HK EKO ELECTRONICS LIMITED Address : FLAT/RM 1 14/F HENLEY INDUSTRIAL CENTRE, 9-15 BUTE STREET, MONG KOK KL, HONGKONG, China Manufacturer : HK EKO ELECTRONICS LIMITED Address : FLAT/RM 1 14/F HENLEY INDUSTRIAL CENTRE, 9-15 BUTE STREET, MONG KOK KL, HONGKONG, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: CTA26042002904 Page 3 of 9 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 TEST STANDARDS ............................................................................................................ 4 2 SUMMARY .......................................................................................................................... 5 2.1 General Remarks .................................................................................................... 5 2.2 Product Description ................................................................................................. 5 2.3 Special Accessories ................................................................................................ 5 2.4 Modifications ........................................................................................................... 5 3 TEST ENVIRONMENT ....................................................................................................... 6 3.1 Address of the test laboratory ................................................................................. 6 3.2 Test Facility ............................................................................................................. 6 3.3 Statement of the measurement uncerta…

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