2BGZW-BICASTBluetooth transmitter

FCC Caution. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. FCC Radiation Exposure Statement: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Rev 1/26/2023 Xiamen Lanse Tianchen Technology Co., Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2025-12-08 FCC ID: 2BGZW-BICAST Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing Xiamen Lanse Tianchen Technology Co., Ltd. certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Xiamen Lanse Tianchen Technology Co., Ltd. certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Device is inherently compliant based on hardware limitations or software controls. or A Software Bill of Materials (SBOM) is provided to the TCB for review, and The end-user or third parties cannot install additional software on this device. Ref. #2: Attestation Statements Part 2.911(d)(5)(ii) Filing Xiamen Lanse Tianchen Technology Co., Ltd. certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. pplicant: Xiamen Lanse Tianchen Technology Co., Ltd. Address: Room 201, No. 149 Qianpu, Qianpu Community, Siming District, Xiamen,Fujian, China Contact Person: Jianguang Wang Tel.: 18123653842 Email: [email protected] Sincerely, Signature:

Attestation Statements Date: 2025-12-08 TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for(FCC ID: 2BGZW-BICAST) Xiamen Lanse Tianchen Technology Co., Ltd., the undersigned, hereby authorize BLAFILI INC. to act as our designated agent for service of process, Xiamen Lanse Tianchen Technology Co., Ltd. accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. BLAFILI INC. accepts the responsibility to act as designated agent for service of process. Applicant Information： Company name: Xiamen Lanse Tianchen Technology Co., Ltd. Contact Name: Jianguang Wang Address: Room 201, No. 149 Qianpu, Qianpu Community, Siming District, Xiamen,Fujian, China Telephone No: 18123653842 Email: [email protected] FRN: 0035558444 Signature: Jianguang Wang Agent Information: Company Name:BLAFILI INC. Address:157 Lorraine Loop, Staten Island, NY 10309, United States FRN: 0035553080 Contact Name:Wenzao Li Telephone No: 347-517-7092 Email: [email protected] Signature: Wenzao Li

Xiamen Lanse Tianchen Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: December 8, 2025 Subject; Request for Confidentiality FCC ID: 2BGZW-BICAST 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 SOFTWARE SECURITY REQUIREMENTS FOR U-NII DEVICES 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: Jianguang Wang Title: PM

Effective Date: April 2, 2020 QSF 7.6.4-8 – Agent Authorization Letter Template Page 1 of 1 Revision Date: Revision: 0 Xiamen Lanse Tianchen Technology Co., Ltd. Date：2025-12-08 Product Model Number: BiCast FCC ID：2BGZW-BICAST To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following: • Testing • Approval applications and procedures We declare that QAI Laboratories Ltd. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by QAI Laboratories Ltd. on our behalf shall have the same effect as acts of our own. Signature: By: Jianguang Wang Contact Listed on FCC Wesbite Title: PM Email: [email protected] On behalf of: Xiamen Lanse Tianchen Technology Co., Ltd.

1.Electrical Characteristics ItemSpecification Modelblafili BiCast Manufacturer Shenzhen Tai Yilinan Scienc e & Technology Co.,Ltd TypePCB Meander Line Antenna Central frequency2.441 GHz Bandwidth78 MHz (Typical value) Gain1dBi PolarizationLinear VSWR2 max. Azimuth BandwithOmni-directional Impedance50Ω Rated Power (max.)4dBm Maximum Input Power10dBm Operation Temperature-40 C ~ +85 C 2.The suggestion of matching circuit 3. The Measurement of S-Parameter and VSWR Frequency(GHz)S11(dB) 2.402-10.24 2.441-24.02 2.480-10.74 Frequency(GHz)VSWR 2.4021.88 2.4411.13 2.4801.81 The reference: Return Loss -6.02dB -7.36dB -10dB -13dB -20dB VSWR 32.5 1.92 1.576 1.22 Return Power Ratio 25% 18.37% 10% 5% 0.98%

Page 1 of 5 Report No.: LGT25L036 Appendix - External Photographs of EUT Constructional Details Photo 1 Photo 2 Page 2 of 5 Report No.: LGT25L036 Appendix - External Photographs of EUT Constructional Details Photo 3 Photo 4 Page 3 of 5 Report No.: LGT25L036 Appendix - External Photographs of EUT Constructional Details Photo 5 Photo 6 Page 4 of 5 Report No.: LGT25L036 Appendix - External Photographs of EUT Constructional Details Photo 7 Photo 8 Page 5 of 5 Report No.: LGT25L036 Appendix - External Photographs of EUT Constructional Details Photo 9

Label Size: 10*20mm FCC ID: 2BGZW-BICAST

Page 1 of 4 Report No.: LGT25L036 Appendix - Internal Photographs of EUT Constructional Details Photo 1 Photo 2 Page 2 of 4 Report No.: LGT25L036 Appendix - Internal Photographs of EUT Constructional Details Photo 3 Photo 4 Page 3 of 4 Report No.: LGT25L036 Appendix - Internal Photographs of EUT Constructional Details Photo 5 Photo 6 ANT Page 4 of 4 Report No.: LGT25L036 Appendix - Internal Photographs of EUT Constructional Details Photo 7

The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:[email protected] Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Page 1 of 8 EMF TEST REPORT Product Name: Bluetooth transmitter Model Number: BiCast FCC ID: 2BGZW-BICAST Issued For : Xiamen Lanse Tianchen Technology Co., Ltd. Room 201, No. 149 Qianpu, Qianpu Community, Siming District, Xiamen,Fujian, China Issued By : Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Report Number: LGT25L036HA01 Sample Received Date: Dec. 03, 2025 Date of Test: Dec. 03, 2025 ~ Dec. 05, 2025 Date of Issue: Dec. 05, 2025 Report No.: LGT25L036HA01 Page 2 of 8 TEST REPORT CERTIFICATION Applicant: Xiamen Lanse Tianchen Technology Co., Ltd. Address: Room 201, No. 149 Qianpu, Qianpu Community, Siming District, Xiamen,Fujian, China Manufacturer: Xiamen Lanse Tianchen Technology Co., Ltd. Address: Room 201, No. 149 Qianpu, Qianpu Community, Siming District, Xiamen,Fujian, China Product Name: Bluetooth transmitter Trademark: blafili Model Number: BiCast Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC 47 CFR §2.1093 KDB 447498 D01 General RF Exposure Guidance v06 PASS Prepared by: Approved by: Zane Shan Vita Li Engineer Technical Director Report No.: LGT25L036HA01 Page 3 of 8 TABLE OF CONTENTS 1 . GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST LABORATORY 5 2 . FCC 47CFR §2.1093 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 TEST RESULT 8 Report No.: LGT25L036HA01 Page 4 of 8 Revision History Rev. Issue Date Revisions 00 Dec. 05, 2025 Initial Issue Report No.: LGT25L036HA01 Page 5 of 8 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name: Bluetooth transmitter Test Model Number: BiCast Series Number: N/A Model Difference: N/A Frequency Bands: Bluetooth 2402-2480MHz Rating: Input: DC 5V 500mA Battery: Capacity: 320mAh Rated Voltage: 3.7V Hardware Version: N/A Software Version: N/A 1.2 TEST LABORATORY Company Name: Shenzhen LGT Test Service Co., Ltd. Address: Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Accreditation Certificate: FCC Registration No.: 746540 CAB ID: CN0136 Report No.: LGT25L036HA01 Page 6 of 8 2. FCC 47CFR §2.1093 REQUIREMENT 2.1 TEST STANDARDS The limit for Maximum Permissible Exposure (MPE) specified in KDB 447498 D01 General RF Exposure Guidance v06 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. 2.2 LIMIT Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. Report No.: LGT25L036HA01 Page 7 of 8 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] • [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR,where f(GHz) is the RF channel transmit frequency in GHz. Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. Report No.: LGT25L036HA01 Page 8 of 8 2.3 TEST RESULT Turn up Result Mode Turn up Power BLE 1M-GFSK -5.5±1.5dBm BLE 2M-GFSK -5.5±1.5dBm The MPE result of worst mode: RF Function Frequency (MHz) Max Turn up Power (dBm) Max Turn up Power (mW) Estimated SAR Limit Ratio Result BLE 2440 -4.50 0.35 0.111 3 0.037 Pass Note: 1. The Maximum Power Density is less than the limit, complies with the exemption requirements. ※※※※※END OF THE REPORT※※※※※

The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:[email protected] Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Page 1 of 53 RF TEST REPORT Product Name: Bluetooth transmitter Model Number: BiCast FCC ID: 2BGZW-BICAST Issued For : Xiamen Lanse Tianchen Technology Co., Ltd. Room 201, No. 149 Qianpu, Qianpu Community, Siming District, Xiamen,Fujian, China Issued By : Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Report Number: LGT25L036RF01 Sample Received Date: Dec. 03, 2025 Date of Test: Dec. 03, 2025 ~ Dec. 05, 2025 Date of Issue: Dec. 05, 2025 Report No.: LGT25L036RF01 Page 2 of 53 TEST REPORT CERTIFICATION Applicant: Xiamen Lanse Tianchen Technology Co., Ltd. Address: Room 201, No. 149 Qianpu, Qianpu Community, Siming District, Xiamen,Fujian, China Manufacturer: Xiamen Lanse Tianchen Technology Co., Ltd. Address: Room 201, No. 149 Qianpu, Qianpu Community, Siming District, Xiamen,Fujian, China Product Name: Bluetooth transmitter Trademark: blafili Model Number: BiCast Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC Part 15.247, Subpart C ANSI C63.10-2020 PASS Prepared by: Approved by: Zane Shan Vita Li Engineer Technical Director Report No.: LGT25L036RF01 Page 3 of 53 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST LABORATORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 9 2.3 TEST SOFTWARE AND POWER LEVEL 9 2.4 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 10 2.5 EQUIPMENTS LIST 11 3. EMC EMISSION TEST 13 3.1 CONDUCTED EMISSION MEASUREMENT 13 3.2 TEST PROCEDURE 14 3.3 TEST SETUP 14 3.4 EUT OPERATING CONDITIONS 14 3.5 TEST RESULTS 15 4. RADIATED EMISSION MEASUREMENT 17 4.1 RADIATED EMISSION LIMITS 17 4.2 TEST PROCEDURE 19 4.3 TEST SETUP 19 4.4 EUT OPERATING CONDITIONS 20 4.5 FIELD STRENGTH CALCULATION 20 4.6 TEST RESULTS (BAND EDGE REQUIREMENTS) 25 5. CONDUCTED SPURIOUS & BAND EDGE EMISSION 27 5.1 LIMIT 27 5.2 TEST PROCEDURE 27 5.3 TEST SETUP 27 5.4 EUT OPERATION CONDITIONS 27 5.5 TEST RESULTS 27 6. POWER SPECTRAL DENSITY TEST 28 6.1 LIMIT 28 6.2 TEST PROCEDURE 28 6.3 TEST SETUP 28 6.4 EUT OPERATION CONDITIONS 28 Report No.: LGT25L036RF01 Page 4 of 53 6.5 TEST RESULTS 28 7. BANDWIDTH TEST 29 7.1 LIMIT 29 7.2 TEST PROCEDURE 29 7.3 TEST SETUP 29 7.4 EUT OPERATION CONDITIONS 29 7.5 TEST RESULTS 29 8. PEAK OUTPUT POWER TEST 30 8.1 LIMIT 30 8.2 TEST PROCEDURE 30 8.3 TEST SETUP 30 8.4 EUT OPERATION CONDITIONS 30 8.5 TEST RESULTS 30 9. ANTENNA REQUIREMENT 31 9.1 STANDARD REQUIREMENT 31 9.2 EUT ANTENNA 31 APPENDIX I - TEST RESULTS 32 1. DUTY CYCLE 32 2. BANDWIDTH 35 3. MAXIMUM CONDUCTED OUTPUT POWER 40 4. MAXIMUM POWER SPECTRAL DENSITY 43 5. UNWANTED EMISSIONS IN NON-RESTRICTED FREQUENCY BANDS 46 APPENDIX II - MEASUREMENT PHOTOS 53 Report No.: LGT25L036RF01 Page 5 of 53 Revision History Rev. Issue Date Revisions 00 Dec. 05, 2025 Initial Issue Report No.: LGT25L036RF01 Page 6 of 53 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 Part 15.247 Meas Guidance v05r02. FCC Part 15.247, Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247 (a)(2) 6dB Bandwidth PASS -- 15.247 (b)(3) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247 (d) Conducted Spurious & Band Edge Emission PASS -- 15.247 (e) Power Spectral Density PASS -- 15.205 Restricted Band Edge Emission PASS -- Part 15.247(d)/ Part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- NOTE: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2020. Report No.: LGT25L036RF01 Page 7 of 53 1.1 TEST LABORATORY Company Name: Shenzhen LGT Test Service Co., Ltd. Address: Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Accreditation Certificate: FCC Registration No.: 746540 CAB ID: CN0136 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 Occupied Channel Bandwidth ±0.46% 2 RF Output Power, Conducted ±0.71dB 3 Power Spectral Density, Conducted ±1.57dB 4 Unwanted Emission, Conducted ±0.63dB 5 Conducted emission ±2.80dB 6 All Emissions, Radiated (0.009-30MHz) ±2.16dB 7 All Emissions, Radiated (30MHz-1GHz) ±4.61dB 8 All Emissions, Radiated (1GHz-18GHz) ±5.49dB 9 Temperature ±0.5°C 10 Humidity ±2% 11 Duty Cycle ±2.3% Note: The measurement uncertainty is not included in the test result. Report No.: LGT25L036RF01 Page 8 of 53 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name: Bluetooth transmitter Test Model Number: BiCast Series Number: N/A Model Difference: N/A Product Description: Operation Frequency: 2402~2480 MHz Modulation Type: GFSK Radio Technology: BLE Bluetooth Configuration: BLE (1M PHY, 2M PHY) Number Of Channel: 40 Antenna Designation: PCB Antenna Antenna Gain (dBi) 1 Channel List: Please refer to the Note 3. Rating: Input: DC 5V 500mA Battery: Capacity: 320mAh Rated Voltage: 3.7V Hardware Version: N/A Software Version: N/A Connecting I/O Port(s): Please refer to the Note 1. Note: 1. For a more detailed features description, please refer to the manufacturer’s specifications or the User Manual. 2. The antenna info…

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Page 1 of 2 Report No.: LGT25L036 Appendix - Test Setup photos Set-up for Radiated Spurious Emission, Below 1GHz Set-up for Radiated Spurious Emission, Above 1GHz Page 2 of 2 Report No.: LGT25L036 Set-up for Conducted Emission