2BW74-JJZN-A01String lights

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202608337 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 4 Product Name: String lights Model No.: JJZN-A01 EUT Constructional Details External Photo Report No.: HTT202608337 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 4 Report No.: HTT202608337 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 3 of 4 Report No.: HTT202608337 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 4 of 4 ------End------

Label and Location Size: L: 1.0cm*W: 0.5cm Label and Location FCC ID : 2BW74-JJZN-A01

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202608337 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 2 Product Name: String lights Model No.: JJZN-A01 EUT Constructional Details Internal Photo ANTENNA Report No.: HTT202608337 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 2 ------End------

Shenzhen HTT Technology Co., Ltd. Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 1 of 8 RF Exposure MPE Report Reference No. ..................... : FCC ID............................................. : HTT202608337F02 2BW74-JJZN-A01 Compiled by ( position+printed name+signature) . : File administrators Heber He Supervised by ( position+printed name+signature) . : Project Engineer Bruce Zhu Approved by ( position+printed name+signature) . : RF Manager Kevin Yang Date of issue .................................... : Aug. 18, 2026 Testing Laboratory Name .............. : Shenzhen HTT Technology Co.,Ltd. Address............................................ : 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao’an District, Shenzhen, Guangdong, China Applicant’s name ............................ : Linhai Jingjia Lighting Co.,Ltd. Address............................................ : Room 502, Unit 1, Building 9, Herun Huafu (Huaheyuan), Dayang Street, Linhai City, Taizhou City, Zhejiang Province Standard ........................................... : 47CFR §1.1310 47CFR §2.1091 KDB447498 D01 General RF Exposure Guidance v06 Shenzhen HTT 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 HTT Technology Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HTT 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 ..................... : String lights Manufacturer .................................... : Linhai Jingjia Lighting Co.,Ltd. Trade Mark ........................................ N/A Model/Type reference ...................... : JJZN-A01 Rating ............................................... : DC 5.0V Result ............................................... : PASS Report No.: HTT202608337F02 Page 2 of 8 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 2 of 8 T E S T R E P O R T Equipment under Test : String lights Model /Type : JJZN-A01 Listed Models : JJZN-A02,JJZN-A03,JJZN-A04,JJZN-A05,JJZN-A06,JJZN-A07, JJZN-A08,JJZN-A09,JJZN-A10,JJZN-A11,JJZN-A12,JJZN-A13, JJZN-A14,JJZN-A15,JJZN-A16,JJZN-A17,JJZN-A18 Model difference : The PCB board, circuit, structure and internal of these models are the same, Only model number is different for these model. Applicant : Linhai Jingjia Lighting Co.,Ltd. Address : Room 502, Unit 1, Building 9, Herun Huafu (Huaheyuan), Dayang Street, Linhai City, Taizhou City, Zhejiang Province Manufacturer : Linhai Jingjia Lighting Co.,Ltd. Address : Room 502, Unit 1, Building 9, Herun Huafu (Huaheyuan), Dayang Street, Linhai City, Taizhou City, Zhejiang Province 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.: HTT202608337F02 Page 3 of 8 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 3 of 8 Contents 1 T E S T S T A N D A R D S ................................................... 4 2 S U M M A R Y .............................................................. 5 2.1 General Remarks 5 2.2 Product Description 5 2.3 Special Accessories 5 2.4 Modifications 5 3 T E S T E N V I R O N M E N T 6 3.1 Address of the test laboratory 6 3.2 Test Facility 6 3.3 Statement of the measurement uncertainty 6 4 T E S T L I M I T 7 4.1 Requirement 7 4.2 MPE Calculation Method 7 4.3 Conducted Power Results 8 4.4 Manufacturing tolerance 8 4.5 Standalone MPE Result 8 4.6 Simultaneous Transmission for MPE Result 8 5 C O N C L U S I O N .......................................................... 8 Report No.: HTT202608337F02 Page 4 of 8 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 4 of 8 1 T E S T S T A N D A R D S The tests were performed according to following standards: ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. FCC KDB 447498 D01 General RF Exposure Guidance v06: Mobile and Portable Device, RF Exposure, Equipment Authorization Procedures. FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits. FCC CFR 47 part2 2.1091: Radiofrequency radiation exposure evaluation: mobile devices Report No.: HTT202608337F02 Page 5 of 8 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 5 of 8 2 S U M M A R Y 2.1 General Remarks Date of receipt of test sample : Aug. 03, 2026 Testing commenced on : Aug. 03, 2026 Testing concluded on : Aug. 18, 2026 2.2 Product Description Product Description: String lights Model/Type reference: JJZN-A01 Power supply: DC 5.0V Adapter Information: MODEL NO:AED06H-0501200VLSO8 INPUT:120V~50/60Hz 0.2A OUTPUT:5V1.0A Testing sample ID： HTT202608337-1# (Engineer sample) HTT202608337-2# (Normal sample) Hardware version: / Software version: / Bluetooth BLE Supported type: Bluetoo…

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1.AntennaDescription: 2.AntennaPhoto: 3.TestEquipment&Conditions 3.1Testinstrument VSWRistestedusingAgilentE5071Bconnectedto ahandmechanism,andthestatusisfreespace. 3.2Testenvironmentandmethods 4．AntennaRadiationPattern

1 Appendix RF Test Data for BLE Company: : Linhai Jingjia Lighting Co.,Ltd. EUT : String lights FCC ID: : 2BW74-JJZN-A01 Model Number : JJZN-A01 Report No. : HTT202608337F01 Reviewed By : Heber He 2 1. Duty Cycle 1.1 Test Result 1.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) T_on (ms) Period (ms) Duty Cycle (%) Duty Cycle Correction Factor (dB) Max. DC Variation (%) 1M SISO 2402 2.142 2.500 85.68 0.67 0.03 2440 2.142 2.501 85.65 0.67 0.03 2480 2.142 2.500 85.68 0.67 0.03 2M SISO 2402 1.090 2.500 43.60 3.61 0.02 2440 1.089 2.500 43.56 3.61 0.02 2480 1.090 2.500 43.60 3.61 0.02 3 1.2 Test Graph 1.2.1 Ant1 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 4 1M_HCH_2480MHz_Ant1_NTNV 2M_LCH_2402MHz_Ant1_NTNV 5 2M_MCH_2440MHz_Ant1_NTNV 2M_HCH_2480MHz_Ant1_NTNV 6 2. Bandwidth 2.1 Test Result 2.1.1 OBW Mode TX Type Frequency (MHz) ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit 1M SISO 2402 1 1.063 / Pass 2440 1 1.068 / Pass 2480 1 1.059 / Pass 2M SISO 2402 1 2.047 / Pass 2440 1 2.057 / Pass 2480 1 2.048 / Pass 2.1.2 6dB BW Mode TX Type Frequency (MHz) ANT 6dB Bandwidth (MHz) Verdict Result Limit 1M SISO 2402 1 0.667 >=0.5 Pass 2440 1 0.684 >=0.5 Pass 2480 1 0.669 >=0.5 Pass 2M SISO 2402 1 1.184 >=0.5 Pass 2440 1 1.178 >=0.5 Pass 2480 1 1.172 >=0.5 Pass 7 2.2 Test Graph 2.2.1 OBW 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 8 1M_HCH_2480MHz_Ant1_NTNV 2M_LCH_2402MHz_Ant1_NTNV 9 2M_MCH_2440MHz_Ant1_NTNV 2M_HCH_2480MHz_Ant1_NTNV 10 2.2.2 6dB BW 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 11 1M_HCH_2480MHz_Ant1_NTNV 2M_LCH_2402MHz_Ant1_NTNV 12 2M_MCH_2440MHz_Ant1_NTNV 2M_HCH_2480MHz_Ant1_NTNV 13 3. Maximum Conducted Output Power 3.1 Test Result 3.1.1 Power Mode TX Type Frequency (MHz) Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit 1M SISO 2402 -1.29 <=30 Pass 2440 -1.56 <=30 Pass 2480 -2.45 <=30 Pass 2M SISO 2402 -1.22 <=30 Pass 2440 -1.43 <=30 Pass 2480 -2.26 <=30 Pass 14 4. Maximum Power Spectral Density 4.1 Test Result 4.1.1 PSD Mode TX Type Frequency (MHz) Maximum PSD (dBm) Verdict ANT1 Limit(dBm/3kHz) 1M SISO 2402 -1.55dBm/100kHz <=8 Pass 2440 -1.77dBm/100kHz <=8 Pass 2480 -2.66dBm/100kHz <=8 Pass 2M SISO 2402 -2.57dBm/100kHz <=8 Pass 2440 -2.00dBm/100kHz <=8 Pass 2480 -2.91dBm/100kHz <=8 Pass 15 4.2 Test Graph 4.2.1 PSD 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 16 1M_HCH_2480MHz_Ant1_NTNV 2M_LCH_2402MHz_Ant1_NTNV 17 2M_MCH_2440MHz_Ant1_NTNV 2M_HCH_2480MHz_Ant1_NTNV 18 5. Unwanted Emissions In Non-restricted Frequency Bands 5.1 Test Result 5.1.1 Ref Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) 1M SISO 2402 1 -1.53 2440 1 -1.77 2480 1 -2.67 2M SISO 2402 1 -1.75 2440 1 -2.20 2480 1 -2.88 5.1.2 CSE Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) Limit (dBm) Verdict 1M SISO 2402 1 -1.53 -21.53 Pass 2440 1 -1.77 -21.77 Pass 2480 1 -2.67 -22.67 Pass 2M SISO 2402 1 -1.75 -21.75 Pass 2440 1 -2.20 -22.20 Pass 2480 1 -2.88 -22.88 Pass 19 5.2 Test Graph 5.2.1 Ref 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 20 1M_HCH_2480MHz_Ant1_NTNV 2M_LCH_2402MHz_Ant1_NTNV 21 2M_MCH_2440MHz_Ant1_NTNV 2M_HCH_2480MHz_Ant1_NTNV 22 5.2.2 CSE 1M_LCH_2402MHz_Ant1_NTNV 1M_LCH_2402MHz_Ant1_NTNV 23 1M_MCH_2440MHz_Ant1_NTNV 1M_HCH_2480MHz_Ant1_NTNV 24 1M_HCH_2480MHz_Ant1_NTNV 2M_LCH_2402MHz_Ant1_NTNV 25 2M_LCH_2402MHz_Ant1_NTNV 2M_MCH_2440MHz_Ant1_NTNV 26 2M_HCH_2480MHz_Ant1_NTNV 2M_HCH_2480MHz_Ant1_NTNV

Shenzhen HTT Technology Co., Ltd. Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No. ...................: FCC ID. ......................................... : HTT202608337F01 2BW74-JJZN-A01 Compiled by ( position+printed name+signature) : File administrators Heber He Supervised by ( position+printed name+signature) : Project Engineer Bruce Zhu Approved by ( position+printed name+signature) : RF Manager Kevin Yang Date of issue ...................................: Aug. 19, 2026 Testing Laboratory Name .............: Shenzhen HTT Technology Co.,Ltd. Address ..........................................: 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao’an District, Shenzhen, Guangdong, China Applicant’s name...........................: Linhai Jingjia Lighting Co.,Ltd. Address ...........................................: Room 502, Unit 1, Building 9, Herun Huafu (Huaheyuan), Dayang Street, Linhai City, Taizhou City, Zhejiang Province Test specification ......................... : Standard ..........................................: FCC Part 15.247 Shenzhen HTT 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 HTT Technology Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HTT 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 ................ : String lights Trade Mark ......................................: N/A Manufacturer ...................................: Linhai Jingjia Lighting Co.,Ltd. Model/Type reference .....................: JJZN-A01 Listed Models ..................................: JJZN-A02,JJZN-A03,JJZN-A04,JJZN-A05,JJZN-A06,JJZN-A07, JJZN-A08,JJZN-A09,JJZN-A10,JJZN-A11,JJZN-A12,JJZN-A13, JJZN-A14,JJZN-A15,JJZN-A16,JJZN-A17,JJZN-A18 Modulation ......................................: GFSK Frequency ........................................ From 2402MHz to 2480MHz Ratings ............................................: DC 5.0V Result ..............................................: PASS Report No.: HTT202608337F01 Page 2 of 34 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China T E S T R E P O R T Equipment under Test : String lights Model /Type : JJZN-A01 Listed Models : JJZN-A02,JJZN-A03,JJZN-A04,JJZN-A05,JJZN-A06,JJZN-A07, JJZN-A08,JJZN-A09,JJZN-A10,JJZN-A11,JJZN-A12,JJZN-A13, JJZN-A14,JJZN-A15,JJZN-A16,JJZN-A17,JJZN-A18 Model difference : The PCB board, circuit, structure and internal of these models are the same, Only model number is different for these model. Applicant : Linhai Jingjia Lighting Co.,Ltd. Address : Room 502, Unit 1, Building 9, Herun Huafu (Huaheyuan), Dayang Street, Linhai City, Taizhou City, Zhejiang Province Manufacturer : Linhai Jingjia Lighting Co.,Ltd. Address : Room 502, Unit 1, Building 9, Herun Huafu (Huaheyuan), Dayang Street, Linhai City, Taizhou City, Zhejiang Province 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.: HTT202608337F01 Page 3 of 34 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China 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 .............................................................................................................…

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Shenzhen HTT Technology Co., Ltd. Report No.: HTT202608337 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 2 Product Name: String lights Model No.: JJZN-A01 Test Setup Photo Radiated Emission Report No.: HTT202608337 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 2 Conducted Emission RF Test ------End------