2BRST-M31FILL LIGHT

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Shenzhen City Meimeiyizu Technology CO., LTD Room 301, Building B, Caifeng Industrial Park, No.18 Baodan Road, Danzhitou Community, Nanwan Street, Longgang District, Shenzhen, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2026/05/08 U.S. Agent Designation Shenzhen City Meimeiyizu Technology CO., LTD acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2BRST-M31): Name and company of U.S. agent: GLOCERTS TECHNOLOGY INC Physical U.S. address of agent: 19784 SUNKISSED RIDGE DR RIVERSIDE, CA 92507 United States FRN of U.S. agent: 0036339737 Phone of U.S. agent: (626) 588-8039 Email address of U.S. agent: [email protected] GLOCERTS TECHNOLOGY INC acknowledges their obligation to accept service of process on behalf of Shenzhen City Meimeiyizu Technology CO., LTD with the FRN [0037417656] accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. An expiration date for this letter does not exist. Sincerely, Signature Jack Chen Manager Shenzhen City Meimeiyizu Technology CO., LTD Signature Huiying Fan Director GLOCERTS TECHNOLOGY INC 48_[mo del] US_Agent_2.911(d)(7) - U, V0 5

FCC ID:2BRST-M31 External Photos of the EUT FCC ID:2BRST-M31 FCC ID:2BRST-M31

Label and Location Size: L: 2.0cm*W: 1.0cm Label and Location FCC ID : 2BRST-M31

FCC ID:2BRST-M31 Internal Photos of the EUT 433MHz Receiving antenna BT antenna FCC ID:2BRST-M31 FCC ID:2BRST-M31 FCC ID:2BRST-M31

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 evaluation Report Reference No. ..................... : FCC ID............................................. : CTA26033101402 2BRST-M31 Compiled by ( position+printed name+signature) . : File administrators Zoey Cao Supervised by ( position+printed name+signature) . : Project Engineer Ace Chai Approved by ( position+printed name+signature) . : RF Manager Eric Wang Date of issue .................................... : Apr. 30, 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 ............................ : Shenzhen City Meimeiyizu Technology CO., LTD Address............................................ : Room 301, Building B, Caifeng Industrial Park, No.18 Baodan Road, Danzhitou Community, Nanwan Street, Longgang District, Shenzhen, China Standard ........................................... : 47CFR §1.1310 47CFR §2.1093 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 ..................... : FILL LIGHT Trade Mark ....................................... : N/A Manufacturer .................................... : Shenzhen City Meimeiyizu Technology CO., LTD Model/Type reference ...................... : M31 Listed Models ................................... : M30, M32, M33, M34, M35, M36, M37, M38, 39, M40, B03 Ratings ............................................. : Input: 5V 1.0A Battery: 3.7V 1200mAh 4.44Wh Result ............................................... : PASS Report No.: CTA26033101402 Page 2 of 8 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 : FILL LIGHT Model /Type : M31 Listed Models : M30, M32, M33, M34, M35, M36, M37, M38, 39, M40, B03 Model difference : The PCB board, circuit, structure and internal of these models are the same, Only model number and colour is different for these model. Applicant : Shenzhen City Meimeiyizu Technology CO., LTD Address : Room 301, Building B, Caifeng Industrial Park, No.18 Baodan Road, Danzhitou Community, Nanwan Street, Longgang District, Shenzhen, China Manufacturer : Shenzhen City Meimeiyizu Technology CO., LTD Address : Room 301, Building B, Caifeng Industrial Park, No.18 Baodan Road, Danzhitou Community, Nanwan Street, Longgang District, Shenzhen, 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.: CTA26033101402 Page 3 of 8 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 uncertainty ............................................................. 6 4 Test limit .............................................................................................................................. 7 4.1 Requirement ............................................................................................................ 7 4.2 Conducted Power Results ....................................................................................... 7 4.3 Manufacturing tolerance .......................................................................................... 7 4.4 Evaluation Result ..................................................................................................... 8 4.5 Simultaneous Transmission for SAR Exclusion ...................................................... 8 5 Conclusion ............................................................…

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1. Antenna Description: Antenna type PCB antenna Model M31 Frequency range 2402-2480MHz Manufacturer Shezhen City Meimeiyizu Technology CO., LTD Address Room 301, Building B, Caifeng Industrial Park, No.18 Baodan Road, Danzhitou Community, Nanwan Street, Longgang District, Shenzhen, China ANT Peak Gain 2.99 dBi 2. Antenna Photo: Length: 10.41mm Width: 5.47mm 3. Test Equipment & Conditions 3.1 Test instrument VSWR is tested using Agilent E5071B connected to a hand mechanism, and the status is free space. 3.2 Test environment and methods 4．Antenna Radiation Pattern 2400MHz 2450MHz 2500MHz

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 C TEST REPORT FCC PART 15.247 Report Reference No. .................... : FCC ID. ........................................... : CTA26033101401 2BRST-M31 Compiled by ( position+printed name+signature) . : File administrators Zoey Cao Supervised by ( position+printed name+signature) . : Project Engineer Ace Chai Approved by ( position+printed name+signature) . : RF Manager Eric Wang Date of issue .................................... : Apr. 30, 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 ........................... : Shenzhen City Meimeiyizu Technology CO., LTD Address ............................................ : Room 301, Building B, Caifeng Industrial Park, No.18 Baodan Road, Danzhitou Community, Nanwan Street, Longgang District, Shenzhen, 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. Test item description ..................... : FILL LIGHT Trade Mark ....................................... : N/A Manufacturer .................................... : Shenzhen City Meimeiyizu Technology CO., LTD Model/Type reference ...................... : M31 Listed Models ................................... : M30, M32, M33, M34, M35, M36, M37, M38, 39, M40, B03 Modulation ....................................... : GFSK, Π/4DQPSK Frequency ........................................ : From 2402MHz to 2480MHz Ratings ............................................. : Input: 5V 1.0A Battery: 3.7V 1200mAh 4.44Wh Result ............................................... : PASS Report No.: CTA26033101401 Page 2 of 39 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 : FILL LIGHT Model /Type : M31 Listed Models : M30, M32, M33, M34, M35, M36, M37, M38, 39, M40, B03 Model difference : The PCB board, circuit, structure and internal of these models are the same, Only model number and colour is different for these model. Applicant : Shenzhen City Meimeiyizu Technology CO., LTD Address : Room 301, Building B, Caifeng Industrial Park, No.18 Baodan Road, Danzhitou Community, Nanwan Street, Longgang District, Shenzhen, China Manufacturer : Shenzhen City Meimeiyizu Technology CO., LTD Address : Room 301, Building B, Caifeng Industrial Park, No.18 Baodan Road, Danzhitou Community, Nanwan Street, Longgang District, Shenzhen, 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.: CTA26033101401 Page 3 of 39 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) ......................................................................................................... 6 2.9 Modifications ...................................................................................................................................... 6 3 TEST ENVIRONMENT ................................................................................................................................. 7 3.1 Address of the test laboratory ..............................................................................…

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1 FCC Appendix RF Test Data for BT FCC ID : 2BRST-M31 Company : Shenzhen City Meimeiyizu Technology CO., LTD EUT : FILL LIGHT Model Number : M31 Report No. : CTA26033101401 Reviewed By : Eric Wang 2 Appendix A: 20dB Emission Bandwidth Test Result TestMode Antenna Freq(MHz) 20dB EBW[MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.945 2401.553 2402.498 --- --- 2441 0.957 2440.547 2441.504 --- --- 2480 0.939 2479.553 2480.492 --- --- 2DH5 Ant1 2402 1.281 2401.379 2402.660 --- --- 2441 1.323 2440.349 2441.672 --- --- 2480 1.278 2479.385 2480.663 --- --- 3 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 4 2DH5_Ant1_2402 2DH5_Ant1_2441 5 2DH5_Ant1_2480 6 Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Freq(MHz) OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.85891 2401.5809 2402.4398 --- --- 2441 0.84702 2440.5824 2441.4294 --- --- 2480 0.87127 2479.5747 2480.4460 --- --- 2DH5 Ant1 2402 1.1936 2401.4132 2402.6068 --- --- 2441 1.1797 2440.4231 2441.6028 --- --- 2480 1.1884 2479.4183 2480.6067 --- --- 7 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 8 2DH5_Ant1_2402 2DH5_Ant1_2441 9 2DH5_Ant1_2480 10 Appendix C: Maximum conducted output power Test Result Peak Test Mode Antenna Freq(MHz) Conducted Peak Powert[dBm] Conducted Limit[dBm] Verdict DH5 Ant1 2402 -2.86 ≤20.97 PASS 2441 -3.10 ≤20.97 PASS 2480 -3.19 ≤20.97 PASS 2DH5 Ant1 2402 -6.96 ≤20.97 PASS 2441 -7.20 ≤20.97 PASS 2480 -7.24 ≤20.97 PASS 11 Appendix D: Carrier frequency separation Test Result TestMode Antenna Freq(MHz) Result[MHz] Limit[MHz] Verdict DH5 Ant1 Hop 1.048 ≥0.957 PASS 2DH5 Ant1 Hop 1.124 ≥0.882 PASS 12 Test Graphs DH5_Ant1_Hop 2DH5_Ant1_Hop 13 Appendix E: Time of occupancy Test Result TestMode Antenna Freq(MHz) BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict DH1 Ant1 Hop 0.408 315 0.129 ≤0.4 PASS DH3 Ant1 Hop 1.664 164 0.273 ≤0.4 PASS DH5 Ant1 Hop 2.912 107 0.312 ≤0.4 PASS 2DH1 Ant1 Hop 0.417 316 0.132 ≤0.4 PASS 2DH3 Ant1 Hop 1.668 161 0.269 ≤0.4 PASS 2DH5 Ant1 Hop 2.916 115 0.335 ≤0.4 PASS 14 Test Graphs DH1_Ant1_Hop DH3_Ant1_Hop 15 DH5_Ant1_Hop 16 2DH1_Ant1_Hop 2DH3_Ant1_Hop 17 2DH5_Ant1_Hop 18 19 Appendix F: Number of hopping channels Test Result TestMode Antenna Freq(MHz) Result[Num] Limit[Num] Verdict DH5 Ant1 Hop 79 ≥15 PASS 2DH5 Ant1 Hop 79 ≥15 PASS 20 Test Graphs DH5_Ant1_Hop 2DH5_Ant1_Hop 21 Appendix G: Band edge measurements Test Result TestMode Antenna ChName Freq(MHz) RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 Low 2402 -3.57 -56.56 ≤-23.57 PASS High 2480 -3.76 -56.12 ≤-23.76 PASS Low Hop_2402 -9.58 -57.96 ≤-29.58 PASS High Hop_2480 -10.94 -57.59 ≤-30.94 PASS 2DH5 Ant1 Low 2402 -9.58 -58.1 ≤-29.58 PASS High 2480 -12.24 -57.65 ≤-32.24 PASS Low Hop_2402 -10.51 -57.24 ≤-30.51 PASS High Hop_2480 -10.88 -57.68 ≤-30.88 PASS 22 Test Graphs DH5_Ant1_Low_2402 DH5_Ant1_High_2480 DH5_Ant1_Low_Hop_2402 23 DH5_Ant1_High_Hop_2480 2DH5_Ant1_Low_2402 24 2DH5_Ant1_High_2480 2DH5_Ant1_Low_Hop_2402 2DH5_Ant1_High_Hop_2480 25 26 Appendix H: Conducted Spurious Emission Test Result TestMode Antenna Freq(MHz) FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 2402 Reference -3.69 -3.69 --- PASS 30~1000 -3.69 -67.92 ≤-23.69 PASS 1000~26500 -3.69 -44.96 ≤-23.69 PASS 2441 Reference -4.12 -4.12 --- PASS 30~1000 -4.12 -68.23 ≤-24.12 PASS 1000~26500 -4.12 -48.08 ≤-24.12 PASS 2480 Reference -4.01 -4.01 --- PASS 30~1000 -4.01 -68.28 ≤-24.01 PASS 1000~26500 -4.01 -48.54 ≤-24.01 PASS 2DH5 Ant1 2402 Reference -11.05 -11.05 --- PASS 30~1000 -11.05 -67.84 ≤-31.05 PASS 1000~26500 -11.05 -55.33 ≤-31.05 PASS 2441 Reference -11.82 -11.82 --- PASS 30~1000 -11.82 -67.97 ≤-31.82 PASS 1000~26500 -11.82 -55.31 ≤-31.82 PASS 2480 Reference -9.87 -9.87 --- PASS 30~1000 -9.87 -67.99 ≤-29.87 PASS 1000~26500 -9.87 -55.68 ≤-29.87 PASS 27 Test Graphs DH5_Ant1_2402_0~Reference DH5_Ant1_2402_30~1000 DH5_Ant1_2402_1000~26500 28 DH5_Ant1_2441_0~Reference DH5_Ant1_2441_30~1000 29 DH5_Ant1_2441_1000~26500 DH5_Ant1_2480_0~Reference DH5_Ant1_2480_30~1000 30 DH5_Ant1_2480_1000~26500 2DH5_Ant1_2402_0~Reference 31 2DH5_Ant1_2402_30~1000 2DH5_Ant1_2402_1000~26500 2DH5_Ant1_2441_0~Reference 32 2DH5_Ant1_2441_30~1000 2DH5_Ant1_2441_1000~26500 33 2DH5_Ant1_2480_0~Reference 2DH5_Ant1_2480_30~1000 2DH5_Ant1_2480_1000~26500 34 35 Appendix I: Duty Cycle Test Result TestMode Antenna Freq(MHz) ON Time [ms] Period [ms] DC [%] xFactor Limit Verdict DH5 Ant1 2402 2.91 3.75 77.60 1.10 --- --- 2441 2.91 3.75 77.60 1.10 --- --- 2480 2.91 3.75 77.60 1.10 --- --- 2DH5 Ant1 2402 2.92 3.75 77.87 1.09 --- --- 2441 2.92 3.76 77.66 1.10 --- --- 2480 2.92 3.75 77.87 1.09 --- ---

36 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 37 2DH5_Ant1_2402 2DH5_Ant1_2441 38 2DH5_Ant1_2480 39 Appendix J: Emissions in Restricted Bands Test Result TestMode ChName Freq(MHz) Detector Freq [MHz] Result [dBm] Gain [dB] DC Factor [dB] Result [dBuV/m] Limit [dBuV/m] Verdict DH5 Low 2402 AV 2310.000 -59.96 2.99 1.10 39.33 ≤54 PASS AV 2381.585 -58.47 2.99 1.10 40.82 ≤54 PASS AV 2390.000 -59.41 2.99 1.10 39.88 ≤54 PASS Peak 2310.000 -51.34 2.99 0.00 46.85 ≤74 PASS Peak 2388.620 -48.54 2.99 0.00 49.65 ≤74 PASS Peak 2390.000 -50.84 2.99 0.00 47.35 ≤74 PASS High 2480 AV 2483.500 -58.83 2.99 1.10 40.46 ≤54 PASS AV 2484.160 -58.18 2.99 1.10 41.11 ≤54 PASS AV 2500.000 -59.12 2.99 1.10 40.17 ≤54 PASS Peak 2483.500 -50.58 2.99 0.00 47.61 ≤74 PASS Peak 2484.560 -45.16 2.99 0.00 53.03 ≤74 PASS Peak 2500.000 -50.22 2.99 0.00 47.97 ≤74 PASS 2DH5 Low 2402 AV 2310.000 -59.83 2.99 1.09 39.45 ≤54 PASS AV 2369.405 -58.67 2.99 1.09 40.61 ≤54 PASS AV 2390.000 -59.56 2.99 1.09 39.72 ≤54 PASS Peak 2310.000 -52.46 2.99 0.00 45.73 ≤74 PASS Peak 2366.255 -48.38 2.99 0.00 49.81 ≤74 PASS Peak 2390.000 -50.96 2.99 0.00 47.23 ≤74 PASS High 2480 AV 2483.500 -58.98 2.99 1.09 40.30 ≤54 PASS AV 2486.240 -58.49 2.99 1.09 40.79 ≤54 PASS AV 2500.000 -58.85 2.99 1.09 40.43 ≤54 PASS Peak 2483.500 -50.86 2.99 0.00 47.33 ≤74 PASS Peak 2499.440 -48.69 2.99 0.00 49.50 ≤74 PASS Peak 2500.000 -52.2 2.99 0.00 45.99 ≤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. 40 Test Graphs DH5_Ant1_Low_2402_AV DH5_Ant1_Low_2402_Peak DH5_Ant1_High_2480_AV 41 DH5_Ant1_High_2480_Peak 2DH5_Ant1_Low_2402_AV 42 2DH5_Ant1_Low_2402_Peak 2DH5_Ant1_High_2480_AV 2DH5_Ant1_High_2480_Peak 43

FCC ID:2BRST-M31 Test Setup Photos of the EUT FCC ID:2BRST-M31