2BOJX-LGT185Bluetooth module

U.S. AGENT LETTER OF ATTESTATION D ate: 2025-04-22 FEDE RAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 R ef: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID: 2BOJX-LGT185 WATT (ShenZhen) Electronics Co.,Ltd. certifies that, as of the date of the filing of the application, Iconsigh Inc. is our designated U.S. agent for service of process for the above referenced FCC ID. WATT (ShenZhen) Electronics 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. I consigh Inc. accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. D esignated U.S. Agent Information: Company Name: Iconsigh Inc. Address: 2310 Homestead Road, Suite C1, Los Altos, CA, 94024, USA FRN: 0033398652 Tel.: +1 (408) 320-9867 Email: [email protected] Signed by (printed name): Benjamin Kaur Signature: Applicant: WATT (ShenZhen) Electronics Co.,Ltd. Address: 5floor B Building,Baoying Industrial Zone,Longgang district, Shenzhen, China FRN: 0036865384 Tel: +86 0755-86185800 Email: [email protected] Signed by (printed name): Bill Luo S ignature:

FCC ID: 2BOJX-LGT185

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.:2502R50668E-RF-00 Report Template Version: FCC-BLE-V2.1 Page 53 of 53 EXHIBIT C - RF EXPOSURE EVALUATION Applicable Standard According to subpart §1.1310,15.247(i) systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for Maximum Permissible Exposure (MPE) (§1.1310, §2.1091) (B) Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f²) 30 30–300 27.5 0.073 0.2 30 300–1500 / / f/1500 30 1500–100,000 / / 1.0 30 f = frequency in MHz; * = Plane-wave equivalent power density; According to §1.1310 and §2.1091 RF exposure is calculated. Calculation formula: Prediction of power density at the distance of the applicable MPE limit S = PG/4R² = power density (in appropriate units, e.g. mW/cm 2 ); P = power input to the antenna (in appropriate units, e.g., mW); G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain; R = distance to the center of radiation of the antenna (appropriate units, e.g., cm); Calculated Data: Operation Mode Frequency (MHz) Antenna Gain Conducted output power including Tune- up Tolerance Evaluation Distance (cm) Power Density (mW/cm 2 ) MPE Limit (mW/cm 2 ) (dBi) (numeric)(dBm)(mW) BLE 2402-2480 -2.92 0.51 1 1.26 20.00 0.0001 1.0 Note: The Conducted output power including Tune-up Tolerance provided by manufacturer. Result: Compliant. The devices meet FCC MPE at 20 cm distance ***** END OF REPORT *****

ANTENNA TEST REPORT Manufacturer: WATT (ShenZhen) Electronics Co.,Ltd. Address: 5floor B Building, Baoying Industrial Zone, Longgang district, Shenzhen, China Product Name: LGT185 Antenna Product Model: LGT185 Report Number: 2503T07114E-RF Date Of Issue: 2025/6/13 Reviewed : Title: Approved By: Luke Yuan OTA Engineer SunZhong Title: Manager Test Laboratory: China Certification ICT Co., Ltd (Dongguan) No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China Tel: +86-769-83085888 www.ccttt.com.cn China Certification ICT Co., Ltd (Dongguan) Report No.: 2503T07114E-RF Page 2 of 13 Test Facility The Test site used by China Certification ICT Co., Ltd (Dongguan) to collect test data is located on the No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China. Declarations China Certification ICT Co., Ltd (Dongguan) is not responsible for the authenticity of any test data provided by the applicant. Data included from the applicant that may affect test results are marked with a triangle symbol “▲”. Customer model name, addresses, names, trademarks etc. are not considered data. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report cannot be reproduced except in full, without prior written approval of the Company. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report may contain data that are not covered by the accreditation scope and shall be marked with an asterisk “★”. Each test item follows the test standard(s) without deviation. China Certification ICT Co., Ltd (Dongguan) Report No.: 2503T07114E-RF Page 3 of 13 CONTENTS DOCUMENT REVISION HISTORY .......................................................................................... 4 1. GENERAL INFORMATION .................................................................................................... 5 2. TEST CONFIGURATIONS ...................................................................................................... 6 2.1 TEST ENVIRONMENT ........................................................................................................................... 6 2.2 TEST EQUIPMENT ................................................................................................................................ 6 2.3 TEST SPECIFICATION ........................................................................................................................... 6 2.4 TEST UNCERTAINTY ............................................................................................................................ 6 2.5 TEST MEASUREMENT SYSTEM ............................................................................................................ 7 2.6 TEST SETUP .......................................................................................................................................... 7 2.6.1 Antenna Gain, Efficiency and Radiation Pattern Test Setup ............................................................ 7 3. TEST RESULTS ......................................................................................................................... 8 3.1 GAIN AND EFFICIENCY ........................................................................................................................ 8 3.2 RADIATION PATTERN .......................................................................................................................... 9 4. EUT PHOTOGRAPHS ............................................................................................................ 12 5. TEST SETUP PHOTOGRAPHS ............................................................................................ 13 China Certification ICT Co., Ltd (Dongguan) Report No.: 2503T07114E-RF Page 4 of 13 DOCUMENT REVISION HISTORY Revision Number Report Number Description of Revision Date of Revision 1.0 2503T07114E-RF Original Report 2025/6/13 China Certification ICT Co., Ltd (Dongguan) Report No.: 2503T07114E-RF Page 5 of 13 1. GENERAL INFORMATION Product Name: LGT185 Antenna Product Model: LGT185 Antenna Type: PCB Test Items: Gain; Efficiency; Radiation Pattern Test Frequency (MHz): 2400, 2450, 2500 Sample Number: 33U9-1 EUT Received Date: 2025/6/3 EUT Received Status: Good China Certification ICT Co., Ltd (Dongguan) Report No.: 2503T07114E-RF Page 6 of 13 2. TEST CONFIGURATIONS 2.1 Test Environment Temperature (°C) 26 Humidity (%RH) 60 Atmospheric Pressure (kPa) 101.1 Tester Leo Li Test Date 2025/6/13 2.2 Test Equipment Manufacturer Description Model Serial Number Calibration Date Calibrate Due Date R&S Vector Network Analyze r ZNB-8 13116010441042502025/2/10 2026/2/9 R&S Cross-Pol.Vivald i-ANT TC-TA18200256 N/A N/A R&S Switch Controller OSP320 1528.3111K02\10 1442 N/A N/A R&S Switch Controller OSP320 1528.3105K03\10 1666 N/A N/A maturo Turntable controllers NCD/536/ 3082..01 N/A N/A N/A R&S Test Software AMS32 11.40.00 N/A N/A R&S Test System TS8991 N/A N/A N/A * Statement of Traceability: China Certification ICT Co., Ltd (Dongguan) attests that all calibrations have been performed, traceable to National Primary Standards and International System of Units (SI). 2.3 Test Specification IEEE Std 149-2021 2.4 Test Uncertainty Otherwise required by the applicant or Product Regulations, Decision Rule in this report did not consider the uncertainty. The extended uncertainty given in this report is obtained by combining the standard uncertainty times the coverage factor K with the 95% confidence interval. Parameter Measurement Uncertainty Passive 1.82 dB VSWR(S11) 0.57 dB China Certification ICT Co., Ltd (Dongguan) Report No.: 2503T07114E-RF Page 7 of 13 2.5 Test Measurement System Conical-cut method is used to measure EUT in OTA qualified anechoic chamber. The Conical Cut method requires the ability of the Measurement Antenna to be physically rotated in the theta plane(overhead) of the EUT for …

Text truncated - open the document above for the full version.

TEST REPORT Applicant: WATT (ShenZhen) Electronics Co.,Ltd. Address: 5floor B Building, Baoying Industrial Zone, Longgang district,Shenzhen,China P r o d u c t N a m e : Bluetooth module F C C I D : 2BOJX-LGT185 Standard(s): 47 CFR Part 15, Subpart C(15.247) ANSI C63.10-2020 KDB 558074 D01 15.247 Meas Guidance v05r02 Report Number: 2502R50668E-RF-00 Report Date: 2025/6/15 The above device has been tested and found compliant with the requirement of the relative standards by Bay Area Compliance Laboratories Corp. (Dongguan). Reviewed By: Pedro Yun Approved By: Gavin Xu Title: Project Engineer Title: RF Supervisor Bay Area Compliance Laboratories Corp. (Dongguan) No.12, Pulong East 1 st Road, Tangxia Town, Dongguan, Guangdong, China Tel: +86-769-86858888 Fax: +86-769-86858891 www.baclcorp.com.cn Note: The information marked ▲ is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested.This report cannot be reproduced except in full, without prior written approval of the Company. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report may contain data that are not covered by the accreditation scope and shall be marked with ★.This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the U.S. Government. Each test item follows the test standard(s) without deviation. Bay Area Compliance Laboratories Corp. (Dongguan) Report No.:2502R50668E-RF-00 Report Template Version: FCC-BLE-V2.1 Page 2 of 53 CONTENTS DOCUMENT REVISION HISTORY ...................................................................................... 4 1. GENERAL INFORMATION ................................................................................................ 5 1.1 GENERAL DESCRIPTION OF EQUIPMENT UNDER TEST ............................................................... 5 1.2 ACCESSORY INFORMATION ........................................................................................................... 5 1.3 ANTENNA INFORMATION DETAIL▲ ............................................................................................. 5 1.4 EQUIPMENT MODIFICATIONS ........................................................................................................ 5 2. SUMMARY OF TEST RESULTS ........................................................................................ 6 3. DESCRIPTION OF TEST CONFIGURATION ................................................................. 7 3.1 OPERATION FREQUENCY DETAIL ................................................................................................. 7 3.2 EUT OPERATION CONDITION ....................................................................................................... 7 3.3 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................... 7 3.4 SUPPORT CABLE LIST AND DETAILS ............................................................................................. 7 3.5 BLOCK DIAGRAM OF TEST SETUP ................................................................................................. 8 3.6 TEST FACILITY ............................................................................................................................... 10 3.7 MEASUREMENT UNCERTAINTY ..................................................................................................... 10 4. REQUIREMENTS AND TEST PROCEDURES ................................................................ 11 4.1 AC LINE CONDUCTED EMISSIONS ................................................................................................ 11 4.1.1 Applicable Standard ................................................................................................................................. 11 4.1.2 EUT Setup ................................................................................................................................................ 12 4.1.3 EMI Test Receiver Setup ......................................................................................................................... 12 4.1.4 Test Procedure .......................................................................................................................................... 13 4.1.5 Corrected Result& Margin Calculation .................................................................................................... 13 4.1.6 Test Result ................................................................................................................................................ 13 4.2 RADIATION SPURIOUS EMISSIONS ................................................................................................. 14 4.2.1 Applicable Standard ................................................................................................................................. 14 4.2.2 EUT Setup ................................................................................................................................................ 14 4.2.3 EMI Test Receiver & Spectrum Analyzer Setup ...................................................................................... 16 4.2.4 Test Procedure .......................................................................................................................................... 16 4.2.5 Corrected Result & Margin Calculation ................................................................................................... 17 4.2.6 Test Result ................................................................................................................................................ 17 4.3 MINIMUM 6 DB BANDWIDTH ...…

Text truncated - open the document above for the full version.