2BUJC-ZT6SGait detection module

TEST REPORT For Bluetooth-LE Report No......................................... : CHTW26010014 Project No ........................................ : SHT2512090502W FCC ID ............................................. : 2BUJC-ZT6S Applicant’s name ............................. : BAL Inc. Address ............................................ : 333 W. Maude Ave, Ste 207, Sunnyvale, CA 94085, United States Product Name .................................. : Gait detection module Trade Mark....................................... : Model No.......................................... : ZT6S Listed Model(s) ................................ : ZT6L Standard .......................................... : FCC CFR Title 47 Part 15 Subpart C § 15.247 Date of receipt of test sample..........: 2025/12/25 Date of testing.............................: 2025/12/30- 2026/1/9 Date of issue...............................: 2026/1/22 Result ................... ........................: PASS Compiled by (Position+Printed name+Signature) : File administrator Caspar Chen Supervised by (Position+Printed name+Signature) : Project Engineer Xiaodong Zhao Approved by (Position+Printed name+Signature) : RF Manager Xu Yang Testing Laboratory Name ............. : Shenzhen Huatongwei International Inspection Co., Ltd. Address ............................................ : Building 7, Baiwang Idea Factory, No.1051, Songbai Road, Yangguang Community, Xili Subdistrict, Nanshan District, Shenzhen, Guangdong, China Test Report Form No. ........................ : R0066 Test Report Form(s) Originator ......... : Shenzhen Huatongwei International Inspection Co., Ltd. Master TRF ........................................ : Dated 2025-07 Shenzhen Huatongwei International Inspection Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Huatongwei International Inspection Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Huatongwei International Inspection 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.The test report merely correspond to the test sample.The authenticity of this Test Report and its contents can be verified by contacting the Laboratory, responsible for this Test Report. Report No.: CHTW26010014 Page 2 of 37 Contents 1. TEST S T A N D A R D S A N D R E P O R T V E R S I O N 3 1.1. Test Standards 3 1.2. Report version 3 2. TEST DESCRIPTION 4 3. SUMMARY 5 3.1. Client Information 5 3.2. Product Description 5 3.3. Radio Specification Description 6 3.4. Testing Laboratory Information 6 4. TEST CONFIGURATION 7 4.1. Test frequency list 7 4.2. Descriptions of Test mode 7 4.3. Test sample information 7 4.4. Support unit used in test configuration and system 8 4.5. Testing environmental condition 8 4.6. Statement of the measurement uncertainty 8 4.7. Equipment Used during the Test 9 5. TEST CONDITIONS AND RESULTS 11 5.1. Antenna Requirement 11 5.2. AC Conducted Emission 12 5.3. Peak Output Power 14 5.4. Power Spectral Density 15 5.5. 6dB bandwidth 16 5.6. 99% Occupied Bandwidth 17 5.7. Duty Cycle 18 5.8. Conducted Band edge and Spurious Emission 19 5.9. Radiated Band edge Emission 20 5.10. Radiated Spurious Emission 22 6. TEST SETUP PHOTOS 28 7. EXTERNAL AND INTERNAL PHOTOS 31 7.1. External Photos 31 7.2. Internal Photos 34 8. APPENDIX REPORT 37 Report No.: CHTW26010014 Page 3 of 37 1. TEST STANDARDS AND REPORT VERSION 1.1. Test Standards The tests were performed according to following standards: ‒ FCC CFR Title 47 Part 15 Subpart C § 15.247: Operation within the bands 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz ‒ ANSI C63.10:2020: American National Standard for Testing Unlicensed Wireless Devices ‒ KDB 558074 D01 15.247 Meas Guidance v05r02: Guidance for Compliance Measurements on Digital Transmission System, Frequency Hopping Spread Spectrum System, and Hybrid System Devices Operating under Section 15.247 of The FCC Rules 1.2. Report version Revision No. Date of issue Description N/A 2026-01-22 Original Report No.: CHTW26010014 Page 4 of 37 2. TEST DESCRIPTION Report clause Test Items Standard Requirement Result Test Engineer 5.1 Antenna Requirement 15.203/15.247(c) PASS Xiangyu.Wei 5.2 AC Conducted Emission 15.207 PASS JUNXU.LIN 5.3 Peak Output Power 15.247(b)(3) PASS Xiangyu.Wei 5.4 Power Spectral Density 15.247(e) PASS Xiangyu.Wei 5.5 6dB Bandwidth 15.247(a)(2) PASS Xiangyu.Wei 5.6 99% Occupied Bandwidth - PASS *1 Xiangyu.Wei 5.7 Duty cycle - PASS *1 Xiangyu.Wei 5.8 Conducted Band Edge and Spurious Emission 15.247(d)/15.205 PASS Xiangyu.Wei 5.9 Radiated Band Edge Emission 15.205/15.209 PASS JUNXU.LIN 5.10 Radiated Spurious Emission 15.247(d)/15.205/15.209 PASS JUNXU.LIN ZIWEN.WANG Note: ‒ The measurement uncertainty is not included in the test result. ‒ *1: No requirement on standard, only report these test data. Report No.: CHTW26010014 Page 5 of 37 3.SUMMARY 3.1. Client Information Applicant: BAL Inc. Address: 333 W. Maude Ave, Ste 207, Sunnyvale, CA 94085, United States Manufacturer: Zhortech Address: 13 rue Here 54000 Nancy France Factory 1: Shenzhen Grandtop Electronics Co., Ltd. Address: 2-3/F, Building 15, Hualun Technology Park, No. 161 Fenghuang Xingye 1st Road, Fuyong Street, Bao'an District, Shenzhen Factory 2: Maxway Technology Co., Ltd. Address: No.9, Dongsheng South Road, Chenjiang, Zhongkai Hi-Tech District,Huizhou, Guangdong Province, China,516029 Factory 3: VTech (Dongguan) Communications Limited Address: No. 6, Xialingbei Section, Liaocheng Middle Road, Liaobu Town, Dongguan City, Guangdong Province 3.2. Product Description Main unit information: Product Name: Gait detection module Trade Mark: Model No.: ZT6S Listed Model(s): ZT6L Power supply: DC 3.7V from Battery Hardware version: ZT6-RevD Software version: N/A Report No.: CHTW26010014 Page 6 of 37 3.3. Radio Spe…

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Test setup photos-Part15.247 RF Conducted Radiated Emission AC Conducted Emission

BLE_1M-2440-0~Reference-PASS BLE_1M-2440-30~1000-PASS BLE_1M-2440-1000~26500-PASS BLE_1M-2480-0~Reference-PASS BLE_1M-2480-30~1000-PASS BLE_1M-2480-1000~26500-PASS BLE_2M-2402-0~Reference-PASS BLE_2M-2402-30~1000-PASS BLE_2M-2402-1000~26500-PASS BLE_2M-2440-0~Reference-PASS BLE_2M-2440-30~1000-PASS BLE_2M-2440-1000~26500-PASS BLE_2M-2480-0~Reference-PASS BLE_2M-2480-30~1000-PASS BLE_2M-2480-1000~26500-PASS --------EndofReport--------

TestGraphs BLE_1M-2402-PASS BLE_1M-2440-PASS BLE_1M-2480-PASS BLE_2M-2402-PASS BLE_2M-2440-PASS BLE_2M-2480-PASS AppendixD:99%OccupiedBandwidth TestResult TestModeFrequency[MHz] 99%OccupiedBandwidth[MHz] Limit[MHz]Verdict BLE_1M24021.0509------ BLE_1M24401.0549------ BLE_1M24801.0509------ BLE_2M24022.0380------ BLE_2M24402.0539------ BLE_2M24802.0460------ TestGraphs BLE_1M-2402 BLE_1M-2440 BLE_1M-2480 BLE_2M-2402 BLE_2M-2440 BLE_2M-2480 AppendixE:DutyCycle TestResult TestModeFrequency[MHz] ONTime [ms] Period [ms] DutyCycle [%] DutyCycle Factor[dB] 1/Tontime(kHz) BLE_1M24020.400.6363.491.97 2.50 BLE_1M24400.400.6363.491.97 2.50 BLE_1M24800.400.6363.491.97 2.50 BLE_2M24020.210.6333.334.77 4.76 BLE_2M24400.210.6333.334.77 4.76 BLE_2M24800.210.6333.334.77 4.76 TestGraphs NTNV-BLE_1M-2402 NTNV-BLE_1M-2440 NTNV-BLE_1M-2480 NTNV-BLE_2M-2402 NTNV-BLE_2M-2440 NTNV-BLE_2M-2480 AppendixF:BandedgeandSpuriousEmission(Conducted) TestGraphs BLE_1M-2402-PASS BLE_1M-2480-PASS BLE_2M-2402-PASS BLE_2M-2480-PASS BLE_1M-2402-0~Reference-PASS BLE_1M-2402-30~1000-PASS BLE_1M-2402-1000~26500-PASS

TEST REPORT For Bluetooth-LE Report No......................................... : CHTW26010014 Project No ........................................ : SHT2512090502W FCC ID ............................................. : 2BUJC-ZT6S Applicant’s name ............................. : BAL Inc. Address ............................................ : 333 W. Maude Ave, Ste 207, Sunnyvale, CA 94085, United States Product Name .................................. : Gait detection module Trade Mark....................................... : Model No.......................................... : ZT6S Listed Model(s) ................................ : ZT6L Standard .......................................... : FCC CFR Title 47 Part 15 Subpart C § 15.247 Date of receipt of test sample..........: 2025/12/25 Date of testing.............................: 2025/12/30- 2026/1/9 Date of issue...............................: 2026/1/22 Result ................... ........................: PASS Compiled by (Position+Printed name+Signature) : File administrator Caspar Chen Supervised by (Position+Printed name+Signature) : Project Engineer Xiaodong Zhao Approved by (Position+Printed name+Signature) : RF Manager Xu Yang Testing Laboratory Name ............. : Shenzhen Huatongwei International Inspection Co., Ltd. Address ............................................ : Building 7, Baiwang Idea Factory, No.1051, Songbai Road, Yangguang Community, Xili Subdistrict, Nanshan District, Shenzhen, Guangdong, China Test Report Form No. ........................ : R0066 Test Report Form(s) Originator ......... : Shenzhen Huatongwei International Inspection Co., Ltd. Master TRF ........................................ : Dated 2025-07 Shenzhen Huatongwei International Inspection Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Huatongwei International Inspection Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Huatongwei International Inspection 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.The test report merely correspond to the test sample.The authenticity of this Test Report and its contents can be verified by contacting the Laboratory, responsible for this Test Report. Report No.: CHTW26010014 Page 2 of 37 Contents 1. TEST S T A N D A R D S A N D R E P O R T V E R S I O N 3 1.1. Test Standards 3 1.2. Report version 3 2. TEST DESCRIPTION 4 3. SUMMARY 5 3.1. Client Information 5 3.2. Product Description 5 3.3. Radio Specification Description 6 3.4. Testing Laboratory Information 6 4. TEST CONFIGURATION 7 4.1. Test frequency list 7 4.2. Descriptions of Test mode 7 4.3. Test sample information 7 4.4. Support unit used in test configuration and system 8 4.5. Testing environmental condition 8 4.6. Statement of the measurement uncertainty 8 4.7. Equipment Used during the Test 9 5. TEST CONDITIONS AND RESULTS 11 5.1. Antenna Requirement 11 5.2. AC Conducted Emission 12 5.3. Peak Output Power 14 5.4. Power Spectral Density 15 5.5. 6dB bandwidth 16 5.6. 99% Occupied Bandwidth 17 5.7. Duty Cycle 18 5.8. Conducted Band edge and Spurious Emission 19 5.9. Radiated Band edge Emission 20 5.10. Radiated Spurious Emission 22 6. TEST SETUP PHOTOS 28 7. EXTERNAL AND INTERNAL PHOTOS 31 7.1. External Photos 31 7.2. Internal Photos 34 8. APPENDIX REPORT 37 Report No.: CHTW26010014 Page 3 of 37 1. TEST STANDARDS AND REPORT VERSION 1.1. Test Standards The tests were performed according to following standards: ‒ FCC CFR Title 47 Part 15 Subpart C § 15.247: Operation within the bands 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz ‒ ANSI C63.10:2020: American National Standard for Testing Unlicensed Wireless Devices ‒ KDB 558074 D01 15.247 Meas Guidance v05r02: Guidance for Compliance Measurements on Digital Transmission System, Frequency Hopping Spread Spectrum System, and Hybrid System Devices Operating under Section 15.247 of The FCC Rules 1.2. Report version Revision No. Date of issue Description N/A 2026-01-22 Original Report No.: CHTW26010014 Page 4 of 37 2. TEST DESCRIPTION Report clause Test Items Standard Requirement Result Test Engineer 5.1 Antenna Requirement 15.203/15.247(c) PASS Xiangyu.Wei 5.2 AC Conducted Emission 15.207 PASS JUNXU.LIN 5.3 Peak Output Power 15.247(b)(3) PASS Xiangyu.Wei 5.4 Power Spectral Density 15.247(e) PASS Xiangyu.Wei 5.5 6dB Bandwidth 15.247(a)(2) PASS Xiangyu.Wei 5.6 99% Occupied Bandwidth - PASS *1 Xiangyu.Wei 5.7 Duty cycle - PASS *1 Xiangyu.Wei 5.8 Conducted Band Edge and Spurious Emission 15.247(d)/15.205 PASS Xiangyu.Wei 5.9 Radiated Band Edge Emission 15.205/15.209 PASS JUNXU.LIN 5.10 Radiated Spurious Emission 15.247(d)/15.205/15.209 PASS JUNXU.LIN ZIWEN.WANG Note: ‒ The measurement uncertainty is not included in the test result. ‒ *1: No requirement on standard, only report these test data. Report No.: CHTW26010014 Page 5 of 37 3.SUMMARY 3.1. Client Information Applicant: BAL Inc. Address: 333 W. Maude Ave, Ste 207, Sunnyvale, CA 94085, United States Manufacturer: Zhortech Address: 13 rue Here 54000 Nancy France Factory 1: Shenzhen Grandtop Electronics Co., Ltd. Address: 2-3/F, Building 15, Hualun Technology Park, No. 161 Fenghuang Xingye 1st Road, Fuyong Street, Bao'an District, Shenzhen Factory 2: Maxway Technology Co., Ltd. Address: No.9, Dongsheng South Road, Chenjiang, Zhongkai Hi-Tech District,Huizhou, Guangdong Province, China,516029 Factory 3: VTech (Dongguan) Communications Limited Address: No. 6, Xialingbei Section, Liaocheng Middle Road, Liaobu Town, Dongguan City, Guangdong Province 3.2. Product Description Main unit information: Product Name: Gait detection module Trade Mark: Model No.: ZT6S Listed Model(s): ZT6L Power supply: DC 3.7V from Battery Hardware version: ZT6-RevD Software version: N/A Report No.: CHTW26010014 Page 6 of 37 3.3. Radio Spe…

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UNLESS OTHER SPECIFIED TOLERANCES ON INPAQ TECHNOLOGY CO., LTD. X X.X X.XX ANGLES HOLEDIA SCALE xxxx UNITmm THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF INPAQ TECHNOLOGY CO.,LTD.AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DRAWN BY: CHECKED BY: DESIGNED BY: APPROVED BY: TITLEACA-3216-A2-MC-S SPECIFICATION DOCUMENT ENS000015380 SPEC REV. NO. A1 Page 1 Of 6 ACA-3216-A2-MC-S SPECIFICATION 1. EXPLANATION OF PART NUMBER AC A _ 3216 A2 _ MC _ S _ _ (1) (2) (3) (4) (5) (6) (7) (1) Product TypeChip Antenna (2) Center Frequency/Band CodeA -2.45GHz (3) Size Code3.2mm(length) x 1.6mm(width) (4) Design Revision CodeA2= Rev. 2 (5) Series No.MC=MONOPOLE Ceramics type (6) Special CodeS= RoHS Compliant (7) Suffix For Special Requirements 2. ELECTRICAL SPECIFICATION ITEM SPECIFICATION Frequency Band 2400MHz2500MHz Return Loss Less than -10 Polarization Linear *Gain Max peak gain0.5 dBi Typ peak gain-0.5 dBi Impedance *Test conditionTest board size 53*20 mmground clearance 13*20 mm Matching circuitPi matching circuit will be required 3. DIMENSIONS Mark L W H a Dimensions 3.2±0.2 1.6±0.2 0.7±0.15 0.35±0.2 No. 5 Chunqiu Road, Panyang Industrial Park, Huangdai Town, Xiangcheng District, Suzhou, China UNLESS OTHER SPECIFIED TOLERANCES ON INPAQ TECHNOLOGY CO., LTD. X X.X X.XX ANGLES HOLEDIA SCALE xxxx UNITmm THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF INPAQ TECHNOLOGY CO.,LTD.AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DRAWN BY: CHECKED BY: DESIGNED BY: APPROVED BY: TITLEACA-3216-A2-MC-S SPECIFICATION DOCUMENT ENS000015380 SPEC REV. NO. A1 Page 2 Of 6 4. RECOMMENDED PCB LAYOUT(unitmm) 5. TERMINAL CONFIGURATION Bottom Layer Top Layer No. 5 Chunqiu Road, Panyang Industrial Park, Huangdai Town, Xiangcheng District, Suzhou, China UNLESS OTHER SPECIFIED TOLERANCES ON INPAQ TECHNOLOGY CO., LTD. XX.XX.XX ANGLESHOLEDIA SCALE xxxx UNITmm THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF INPAQ TECHNOLOGY CO.,LTD.AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DRAWN BY:CHECKED BY: DESIGNED BY:APPROVED BY: TITLEACA-3216-A2-MC-S SPECIFICATION DOCUMENT ENS000015380 SPEC REV. NO. A1 Page 3 Of 6 6. ELECTRICAL CHARACTERISTICS Return Loss 7. RADIATION PATTERN The gain pattern is measured in Ifar-field chamber. AUT is placed on the table of rotator, a standard horn antenna and vector network analyzer is used to collect data. ( Please contact with INPAQ for more detail ) Measuring factors definition 2400MHz 2450MHz 2500MHz X Y Z No. 5 Chunqiu Road, Panyang Industrial Park, Huangdai Town, Xiangcheng District, Suzhou, China UNLESS OTHER SPECIFIED TOLERANCES ON INPAQ TECHNOLOGY CO., LTD. X X.X X.XX ANGLES HOLEDIA SCALE xxxx UNITmm THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF INPAQ TECHNOLOGY CO.,LTD.AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DRAWN BY: CHECKED BY: DESIGNED BY: APPROVED BY: TITLEACA-3216-A2-MC-S SPECIFICATION DOCUMENT ENS000015380 SPEC REV. NO. A1 Page 4 Of 6 8. PACKAGING (1) Quantity4000pcs/Reel (2) Carrier Tape Dimensions(unitmm) (3) Tape Packing (4) Cover Tape Reel Off Force (5) Reel Dimensions: (unit: mm) A 3.55±0.5 B 5.25±0.15 C 1.50±0.10 D 1.75±0.10 E 1.98±0.05 F 4.0±0.10 T 0.75±0.05 A 178.02.0 B 2.00.5 C 13.00.5 D 21.00.8 E 60.01.0 F 9.00.5 G 12.00.2 No. 5 Chunqiu Road, Panyang Industrial Park, Huangdai Town, Xiangcheng District, Suzhou, China UNLESS OTHER SPECIFIED TOLERANCES ON INPAQ TECHNOLOGY CO., LTD. X X.X X.XX ANGLES HOLEDIA SCALE xxxx UNITmm THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF INPAQ TECHNOLOGY CO.,LTD.AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DRAWN BY: CHECKED BY: DESIGNED BY: APPROVED BY: TITLEACA-3216-A2-MC-S SPECIFICATION DOCUMENT ENS000015380 SPEC REV. NO. A1 Page 5 Of 6 9. Environmental Specifications (1) Reliability Test Item Condition Specification Thermal shock 1. 30±3 minutes at -40°C±5°C, 2. Convert to +105°C (5 minutes) 3. 30±3 minutes at +105°C±5°C, 4. Convert to -40°C (5 minutes) 5. Total 24 continuous cycles No apparent damage Fulfill the electrical spec. after test. Humidity resistance 1. Humidity: 85% R.H. 2. Temperature: 85±5°C 3. Time: 500 hours. No apparent damage Fulfill the electrical spec. after test. High temperature resistance 1. Temperature: 150°C±5°C 2. Time: 1000 hours. No apparent damage Fulfill the electrical spec. after test. Low temperature resistance 1. Temperature: -40°C±5°C 2. Time: 1000 hours. No apparent damage Fulfill the electrical spec. after test. Soldering heat resistance 1. Solder bath temperature : 260±5 2. Bathing time: 10±1 seconds No apparent damage Solderability The dipped surface of the terminal shall be at least 95% covered with solder after dipped in solder bath of 245±5 for 3±1 seconds. No apparent damage (2) Storage condition (a) At warehouse The temperature should be within 0 ~ 30 and humidity should be less than 75% RH. The product should be used within 1 year from the time of delivery. (b) On board The temperature should be within -40~85 and humidity should be less than 85% RH. (3) Operating temperature range Operating temperature range-40 to +105. No. 5 Chunqiu Road, Panyang Industrial Park, Huangdai Town, Xiangcheng District, Suzhou, China UNLESS OTHER SPECIFIED TOLERANCES ON INPAQ TECHNOLOGY CO., LTD. X X.X X.XX ANGLES HOLEDIA SCALE xxxx UNITmm THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF INPAQ TECHNOLOGY CO.,LTD.AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DRAWN BY: CHECKED BY: DESIGNED BY: APPROVED BY: TITLEACA-3216-A2-MC-S SPECIFICATION DOCUMENT ENS000015380 SPEC REV. NO. A1 Page 6 Of 6 10. Recommendable reflow soldering (1) Soldering gun procedur…

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BLE_1M-2440-0~Reference-PASS BLE_1M-2440-30~1000-PASS BLE_1M-2440-1000~26500-PASS BLE_1M-2480-0~Reference-PASS BLE_1M-2480-30~1000-PASS BLE_1M-2480-1000~26500-PASS BLE_2M-2402-0~Reference-PASS BLE_2M-2402-30~1000-PASS BLE_2M-2402-1000~26500-PASS BLE_2M-2440-0~Reference-PASS BLE_2M-2440-30~1000-PASS BLE_2M-2440-1000~26500-PASS BLE_2M-2480-0~Reference-PASS BLE_2M-2480-30~1000-PASS BLE_2M-2480-1000~26500-PASS --------EndofReport--------

TestGraphs BLE_1M-2402-PASS BLE_1M-2440-PASS BLE_1M-2480-PASS BLE_2M-2402-PASS BLE_2M-2440-PASS BLE_2M-2480-PASS AppendixD:99%OccupiedBandwidth TestResult TestModeFrequency[MHz] 99%OccupiedBandwidth[MHz] Limit[MHz]Verdict BLE_1M24021.0509------ BLE_1M24401.0549------ BLE_1M24801.0509------ BLE_2M24022.0380------ BLE_2M24402.0539------ BLE_2M24802.0460------ TestGraphs BLE_1M-2402 BLE_1M-2440 BLE_1M-2480 BLE_2M-2402 BLE_2M-2440 BLE_2M-2480 AppendixE:DutyCycle TestResult TestModeFrequency[MHz] ONTime [ms] Period [ms] DutyCycle [%] DutyCycle Factor[dB] 1/Tontime(kHz) BLE_1M24020.400.6363.491.97 2.50 BLE_1M24400.400.6363.491.97 2.50 BLE_1M24800.400.6363.491.97 2.50 BLE_2M24020.210.6333.334.77 4.76 BLE_2M24400.210.6333.334.77 4.76 BLE_2M24800.210.6333.334.77 4.76 TestGraphs NTNV-BLE_1M-2402 NTNV-BLE_1M-2440 NTNV-BLE_1M-2480 NTNV-BLE_2M-2402 NTNV-BLE_2M-2440 NTNV-BLE_2M-2480 AppendixF:BandedgeandSpuriousEmission(Conducted) TestGraphs BLE_1M-2402-PASS BLE_1M-2480-PASS BLE_2M-2402-PASS BLE_2M-2480-PASS BLE_1M-2402-0~Reference-PASS BLE_1M-2402-30~1000-PASS BLE_1M-2402-1000~26500-PASS

BAL Inc. 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – Equipment Type Company name: BAL Inc. Address: 333 W. Maude Ave, Ste 207, Sunnyvale, CA 94085, United States Product Name: Gait detection module FCC ID: 2BUJC-ZT6S Model(s): ZT6S, ZT6L 2.911(d)(5)(i) Equipment Type We, [BAL Inc.] (“the applicant”) certify that the equipment for which authorization is sought through certification is not: • Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules. • Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: Malik Issolah Date: 2026.05.06 Title and Company name: General Manager, BAL Inc. NOTE 1 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

TEST REPORT For RF Exposure Report No......................................... : CHTW26010015 Project No ........................................ : SHT2512090502W FCC ID ............................................. : 2BUJC-ZT6S Applicant’s name ............................. : BAL Inc. Address ............................................ : 333 W. Maude Ave, Ste 207, Sunnyvale, CA 94085, United States Product Name .................................. : Gait detection module Trade Mark....................................... : Model No.......................................... : ZT6S Listed Model(s) ................................ : ZT6L Standard .......................................... : FCC Part 2 (Section 2.1093) Date of receipt of test sample..........: 2025/12/25 Date of testing.............................: 2025/12/30- 2026/1/9 Date of issue...............................: 2026/1/22 Result ................... ........................: PASS Compiled by (Position+Printed name+Signature) : File administrator Caspar Chen Supervised by (Position+Printed name+Signature) : Project Engineer Xiaodong Zhao Approved by (Position+Printed name+Signature) : RF Manager Xu Yang Testing Laboratory Name ............. : Shenzhen Huatongwei International Inspection Co., Ltd. Address ............................................ : Building 7, Baiwang Idea Factory, No.1051, Songbai Road, Yangguang Community, Xili Subdistrict, Nanshan District, Shenzhen, Guangdong, China Test Report Form No. ........................ : R0066 Test Report Form(s) Originator ......... : Shenzhen Huatongwei International Inspection Co., Ltd. Master TRF ........................................ : Dated 2025-07 Shenzhen Huatongwei International Inspection Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Huatongwei International Inspection Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Huatongwei International Inspection 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.The test report merely correspond to the test sample.The authenticity of this Test Report and its contents can be verified by contacting the Laboratory, responsible for this Test Report. Report No.: CHTW26010015 Page 2 of 7 Contents 1.TEST STANDARDS AND REPORT VERSION3 1.1. Test standards 3 1.2. Report version information 3 2.SUMMARY4 2.1. Client Information 4 2.2. Product Description 4 2.3. Radio Specification Description 4 2.4. Testing Laboratory Information 5 3.RF EXPOSURE6 4.EXTERNAL AND INTERNAL PHOTOS OF THE EUT7 Report No.: CHTW26010015 Page 3 of 7 1.TEST STANDARDS AND REPORT VERSION 1.1. Test standards The tests were performed according to following standards: FCC Part 2 (Section 2.1093)- Radiofrequency radiation exposure evaluation: portable devices. KDB 447498 D04 Interim General RF Exposure Guidance v01- RF Exposure Procedures and Equipment Authorization Policies for Mobile and Portable Devices FCC Part 1 (Section 1.1307)- Actions that may have a significant environmental effect, for which Environmental Assessments (EAs) must be prepared. 1.2. Report version information Revision No. Date of issue Description N/A 2026-01-22 Original Report No.: CHTW26010015 Page 4 of 7 2.SUMMARY 2.1. Client Information Applicant: BAL Inc. Address: 333 W. Maude Ave, Ste 207, Sunnyvale, CA 94085, United States Manufacturer: Zhortech Address: 13 rue Here 54000 Nancy France Factory 1: Shenzhen Grandtop Electronics Co., Ltd. Address: 2-3/F, Building 15, Hualun Technology Park, No. 161 Fenghuang Xingye 1st Road, Fuyong Street, Bao'an District, Shenzhen Factory 2: Maxway Technology Co., Ltd. Address: No.9, Dongsheng South Road, Chenjiang, Zhongkai Hi-Tech District,Huizhou, Guangdong Province, China,516029 Factory 3: VTech (Dongguan) Communications Limited Address: No. 6, Xialingbei Section, Liaocheng Middle Road, Liaobu Town, Dongguan City, Guangdong Province 2.2. Product Description Product Name: Gait detection module Trade Mark: Model No.: ZT6S Listed Model(s): ZT6L Power supply: DC 3.7V from Battery Hardware version: ZT6-RevD Software version: N/A 2.3. Radio Specification Description Bluetooth Supported type: LE-1Mbps LE-2Mbps Note: Please refer to RF report for detailed technical specifications Report No.: CHTW26010015 Page 5 of 7 2.4. Testing Laboratory Information Laboratory Name Shenzhen Huatongwei International Inspection Co., Ltd. Laboratory Location Building 7, Baiwang Idea Factory, No.1051, Songbai Road, Yangguang Community, Xili Subdistrict, Nanshan District, Shenzhen, Guangdong, China Contact information: Phone: 400-963-0755 E-mail: [email protected] http://www.szhtw.com.cn Qualifications Type Accreditation Number FCC Registration Number 762235 FCC Designation Number CN1181 Report No.: CHTW26010015 Page 6 of 7 3. RF EXPOSURE LIMIT: KDB 447498 D04 Interim General RF Exposure Guidance v01 Appendix B Exemptions for Single RF Sources B.3 MPE-based Exemption and B.4 SAR-based Exemption: f is in GHz, d is the separation distance (cm), and ERP20cm is per Formula (B.1). TEST RESULT Passed Not Applicable Radio Type Frequency (MHz) Conducted Power(dBm) Ant Gain(dBi) Maximum ERP/EIRP (dBm) Maximum ERP/EIRP (mW) Minimum Separation Distance(mm) Pth* (mW) Bluetooth 2402 2.69 0.50 3.19 2.08 0 6.98 Note: 1) The safety distance for extremity exposure assessment is 0mm. 2) *: when 10-g extremity SAR applies, SAR test exemption may be considered by applying a factor of 2.5 to the SAR- based exemption thresholds. Report No.: CHTW26010015 Page 7 of 7 4. EXTERNAL AND INTERNAL PHOTOS OF THE EUT Reference to the test report No. CHTW26010014 --- End of Report ---

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BAL Inc. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2026.05.06 Subject; Request for Confidentiality FCC ID: 2BUJC-ZT6S To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Malik Issolah Title: General Manager

BAL Inc. Letter of Authorization Company: BAL Inc. Address: 333 W. Maude Ave, Ste 207, Sunnyvale, CA 94085, United Sta…

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