2BTEM-WW01Water Watch

1263 n 100 e American Fork, UT 84003 801.995.9142 [email protected] Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 01-12-2026 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: 2BTEM-WW01 Water Watch LLC (“the applicant”) certifies that, as of the date of the filing of the application, we designate ourselves as the U.S. agent for service of process. Designated U.S. Agent Information: FRN: 0037693611 Name: Water Watch LLC Address: 1263 n 100 e, American Fork, UT 84003 Contact Person: Cory Richards Tel.: 801-995-9142 Email: [email protected] Sincerely, Cory Richards Rev 1/26/2023

1263 n 100 e American Fork, UT 84003 801.995.9142 [email protected] Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 01-12-2026 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2BTEM-WW01 Water Watch LLC (“the applicant”) 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. Water Watch LLC (“the applicant”) 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). X 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. Sincerely, Cory Richards Rev 1/26/2023 1263 n 100 e American Fork, UT 84003 801.995.9142 [email protected] Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 01-12-2026 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2BTEM-WW01 Water Watch LLC (“the applicant”) 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. Sincerely, Cory Richards Rev 1/26/2023

1263 n 100 e American Fork, UT 84003 801.995.9142 [email protected] Date (01/16/2026) Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Confidentiality Request FCC ID: 2BTEM-WW01 Pursuant to Sections 0.457(d)(1)(ii) and 0.459 of the Commission’s Rules, Water Watch LLC hereby requests permanent confidential treatment of information accompanying this application as outlined below: Schematics Bill of Materials/Parts List Block Diagrams Theory of Operation Water Watch LLC also hereby requests short-term confidential treatment of information accompanying this application as outlined below for a period of 180 days. Internal Photos External Photos User Manual Test Set-up Photographs The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457(d)(1)(ii), disclosure of this Application and all accompanying materials will not be made before the date of the Grant for this Application. Yours sincerely, Name: Cory Richards Title: Partner, Water Watch LLC

Date (01/12/2026) Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam, We, Water Watch LLC, 1263 n 100 e, American Fork, UT 84003 , hereby authorize Hoosamuddin Bandukwala of H.B. Compliance Solutions, 5005 S. Ash Avenue, Suite A-10, Tempe AZ-85282 to act as our agent in all matters relating to applications for equipment authorization, including the signing of all documents relating to these matters. Yours sincerely, Name: Cory Richards Title: Partner

Certificates and reports shall not be reproduced except in full, without the written permission of H.B Compliance Solutions, LLC. FCC SAR Exclusion Report For the Water Watch Watch January 21, 2026 Prepared for: Water Watch, LLC 1263 N 100 E American Fork, UT 84003 Prepared By: H.B. Compliance Solutions 5005 S. Ash Avenue, Suite # A-10 Tempe, Arizona 85282 Reviewed By: Hoosamuddin Bandukwala Cert # ATL-0062-E HBCS SAR Exclusion Test Report # EMC_25018_2 Rev1 Page 2 of 6 1. Equipment Overview Product Name: Water Watch Model(s) Tested: N/A FCC ID: 2BTEM-WW01 Supply Voltage Input: Primary Power: +3,3VDCc Frequency Range: 434 MHz No. of Channels: 01 Type(s) of Modulation: FSK Range of Operation Power: 0.0656mW (Radiated) Emission Designator: N/A Channel Spacing(s) N/A Test Item: Pre-Production Type of Equipment: Mobile Antenna Requirement (§15.203) : Type of Antenna: Surface Mount Coil Antenna Gain of Antenna: 2.5dBi Environmental Test Conditions: Temperature: 15-35⁰C Humidity: 30-60% Barometric Pressure: 860-1060 mbar Modification to the EUT: None HBCS SAR Exclusion Test Report # EMC_25018_2 Rev1 Page 3 of 6 2. Test Facility All testing was performed at H.B. Compliance Solutions. This facility is located at 5005 S. Ash Avenue, Suite # A-10, Tempe AZ-85282. All equipment used in making physical determination is accurate and bears recent traceability to the National Institute of Standards and Technology. Radiated Emissions measurements were performed in a GTEM chamber (equivalent to an Open Area Test Site). In accordance with §2.948(a)(3), a complete site description is contained at H.B. Compliance Solutions. Test facility H.B. Compliance Solutions is an ANAB accredited test site. The ANAB certificate number is L2458. The scope of accreditation can be found on ANAB website www.anab.org FCC Registered Number: 738876 ISED Test Site Registration number is 9481A CAB ID: US0226 HBCS SAR Exclusion Test Report # EMC_25018_2 Rev1 Page 4 of 6 3. Applicable Standard Standalone SAR Test Exclusion Consideration According to KDB447498 D01 General RF Exposure Guidance v06 4.3.1. Standalone SAR test exclusion considerations Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Exclusion Threshold condition, listed below, is satisfied. Limits Table 1: SAR test exclusion threshold 100MHz -6GHz for ≤50MM HBCS SAR Exclusion Test Report # EMC_25018_2 Rev1 Page 5 of 6 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: 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 HBCS SAR Exclusion Test Report # EMC_25018_2 Rev1 Page 6 of 6 4. Test Results To solve for the EIRP; General RF Exposure = (0.0134 / 5 mm) x √0.433 GHz = 0.0017 ① SAR 1g extremity requirement: S= 3.0 ② ; ① < ②. Therefore SAR report is not required. Frequency (GHz) Separation Distance (mm) Max Power + Tolerance (dBm) Max Power + Tolerance (mW) SAR Calculation Result Limit for Exclusion threshold SAR Evaluation 0.434 5.0 -11.83 0.0134 0.0017 3.0 SAR Exempt Transmit power is less than power indicated in table 1 and the result of the above condition is less than 3. Based on this the transmitter is exempted from SAR evaluation. END OF TEST REPORT

Certificates and reports shall not be reproduced except in full, without the written permission of H.B Compliance Solutions, LLC. Intentional Radiator Test Report For the Water Watch Watch Tested under The FCC Rules contained in Title 47 of the CFR, Part 15.231 for Periodic Operation Prepared for: Water Watch, LLC 1263 N 100 E American Fork, UT 84003 Prepared By: H.B. Compliance Solutions 5005 S. Ash Avenue, Suite # A-10 Tempe, Arizona 85282 Reviewed By: Hoosamuddin Bandukwala Cert # ATL-0062-E Engineering Statement: The measurements shown in this report were made in accordance with the procedure indicated, and the emissions from this equipment were found to be within the limits applicable. I assume full responsibility for the accuracy and completeness of these measurements, and for the qualifications of all persons taking them. It is further stated that upon the basis of the measurement made, the equipment tested is capable of operation in accordance with the requirements of Part 15 of the FCC Rules under normal use and maintenance. All results contained herein relate only to the sample tested. HBCS Report # EMC_25018 Page 2 of 22 Report Status Sheet Revision # Report Date Reason for Revision Ø January 19, 2026 Initial Issue 1 March 17, 2026 Added CAB ID HBCS Report # EMC_25018 Page 3 of 22 Table of Contents EXECUTIVE SUMMARY ............................................................................................ 4 1. Testing Summary ....................................................................................... 4 EQUIPMENT CONFIGURATION ................................................................................ 5 1. Overview ................................................................................................... 5 2. Test Facility ............................................................................................... 6 3. Description of Test Sample ........................................................................ 7 4. Equipment Configuration .......................................................................... 7 5. Support Equipment ................................................................................... 7 6. Ports and Cabling Information ................................................................... 7 7. Method of Monitoring EUT Operation ...................................................... 7 8. Mode of Operation .................................................................................... 8 9. Modifications ............................................................................................ 8 10. Disposition of EUT ..................................................................................... 8 Criteria for Un-Intentional Radiators ...................................................................... 9 1. Radiated Emissions .................................................................................... 9 Emissions Tests Calculations ...................................................................... 10 Criteria for Intentional Radiators .......................................................................... 13 1. Occupied Bandwidth ............................................................................... 13 2. Deactivation Time ................................................................................... 15 3. Duty Cycle ............................................................................................... 17 1. Radiated Spurious Emissions and Restricted Band .................................. 19 4. Test Equipment ....................................................................................... 22 5. Measurement Uncertainty ............................................................................ 23 HBCS Report # EMC_25018 Page 4 of 22 EXECUTIVE SUMMARY 1. Testing Summary These tests were conducted on a sample of the equipment for the purpose of demonstrating compliance with Part 15.231. All tests were conducted using measurement procedure from ANSI C63.10-2020, American National Standard of Procedures for Compliance Testing of Unlicensed Wireless Devices as appropriate. Test Name Test Method/Standard Result Comments Unintentional Radiated Emissions 15.109 Pass A/C Power Line Conducted Emissions 15.207(a) N/A Battery Powered Device. Occupied Bandwidth 15.231(c) Pass Deactivation Time 15.231(a)(4) Pass Duty Cycle 15.231 Pass Radiated Spurious Emissions 15.231(b), 15.209(a), 15.205, 15.35(C) Pass HBCS Report # EMC_25018 Page 5 of 22 EQUIPMENT CONFIGURATION 1. Overview H.B Compliance Solutions was contracted by Water Watch to perform testing on the Water Watch under the purchase order number T02501. This document describes the test setups, test methods, required test equipment, and the test limit criteria used to perform compliance testing of the Water Watch, Watch. The tests were based on FCC Part 15 Rules. The tests described in this document were formal tests as described with the objective of the testing was to evaluate compliance of the Equipment Under Test (EUT) to the requirements of the aforementioned specifications. Water Watch should retain a copy of this document and it should be kept on file for at least five years after the manufacturing of the EUT has been permanently discontinued. The results obtained relate only to the item(s) tested. Product Name: Water Watch Model(s) Tested: - FCC ID: 2BTEM-WW01 Supply Voltage Input: Primary Power : 3.3 Vdc Frequency Range: 434 MHz No. of Channels: 1 Type(s) of Modulation: FSK Range of Operation Power: 0.0656 mW (Radiated) Emission Designator: N/A Channel Spacing(s) None Test Item: Pre-Production Type of Equipment: Portable Antenna Requirement (§15.203): Type of Antenna: Surface Mount Coil Antenna Gain of Antenna: 2.5dBi Environmental Test Conditions: Temperature: 15-35⁰C Humidity: 30-60% Barometric Pressure: 860-1060 mbar Modification to the EUT: None Evaluated By: Staff at H.B Compliance Solutions Test Dat…

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