2AXYM-K0NALNoah Multifunction Leak Sensor

Kairos IoT Water Controls LLC 1254 Wincrest Ct NW, Kennesaw, GA, USA 30152 Tel: +1 7576941179 Fax: N/A Series Models Description FCC ID: 2AXYM-K0NAL Date: Dec. 21, 2020 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To whom it may concern: The device (Product Name: Noah Multifunction Leak Sensor) Models Name: N2-OTAA-01, N2-ABP-017 have same electrical, PCB and BOM, only the colour and model’s names are different for marketing requirements. Sincerely, Seth Taylor/ Head of Engineering

Kairos IoT Water Controls LLC 1254 Wincrest Ct NW, Kennesaw, GA, USA 30152 Tel: +1 7576941179 Fax: N/A DATE 12-21-2020 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AXYM-K0NAL Product Name: Noah Multifunction Leak Sensor Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential: (List here the documents for which you are seeking confidentiality – for example ...) • Schematics • Block diagram • Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. Dated this 12-21-2020 By: Seth Taylor Si gnature Printed Title: Head of Engineering On behalf of : Kairos IoT Water Controls LLC Telephone: +1 7576941179

FC C ID Label Information Label location: Size:4cm *2cm(L*W) Kairos IoT Water Controls LLC Noah Multifunction Leak Sensor Model:N2-OTAA-01 FCC ID:2AXYM-K0NAL This device complies with Part 15 of the FCC Rules. Operationissubjecttothefollowingtwoconditions:(1) thisdevicemaynotcauseharmfulinterference,and(2) this device must accept any interference received, including interference that may cause undesired operation.

Antenna

RF Exposure evaluation FCC ID: 2AXYM-K0NAL 1. Reference According to §1.1307(b)(1), 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. According to §1.1310 and §2.1091 RF exposure is calculated. KDB447498 D01: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies 2. Limit Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 1842/f 61.4 / / 1.63 4.89/f 0.163 / / (100) * (900/f 2 )* 1.0 f/300 5 6 6 6 6 6 Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 824/f 27.5 / / 1.63 2.19/f 0.073 / / (100) * (180/f 2 )* 0.2 f/1500 1.0 30 30 30 30 30 F=frequency in MHz *=Plane-wave equivalent power density 3. MPE Calculation Method Predication of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna 4. Result As declared by the Applicant, the EUT is a wireless device used in a fix application, at least 20 cm from any body part of the user or nearby persons; from the maximum EUT RF output power, the minimum separation distance, r =20cm, as well as the gain of the used antenna is 2.33dBi, the RF power density can be obtained. Max. Output Power (dBm) Max. Output Power (mW) Antenna Gain (Numeric) Power Density At 20 cm (mW/cm 2 ) Power Density Limit FCC (mW/cm 2 ) Test Results 16.323 42.88 1.71 0.0146 1.0000 PASS 5. Conclusion The evaluation is not required.

Shenzhen CTL Testing Technology Co., Ltd. Tel: +86-755-89486194 E-mail: [email protected] TEST REPORT FCC PART 15 SUBPART C 15.247 & RSS 247 Report Reference No. ................. : CTL2011176011-WF Compiled by: ( position+printed name+signature) Happy Guo (File administrators) Tested by: ( position+printed name+signature) Ray Feng (Test Engineer) Approved by: ( position+printed name+signature) Ivan Xie (Manager) Product Name .............................. : Noah Multifunction Leak Sensor Model/Type reference ................. : N2-OTAA-01 List Model(s) ................................ : N2-ABP-01 Trade Mark ................................... : KAIROS FCC ID .......................................... : 2AXYM-K0NAL Applicant’s name ........................ : Kairos IoT Water Controls LLC Address of applicant .................. : 1254 Wincrest Ct NW, Kennesaw, GA, USA 30152 Test Firm ...................................... : Shenzhen CTL Testing Technology Co., Ltd. Address of Test Firm .................. : Floor 1- A, Baisha Technology Park, No.3011, Shahexi Road, Nanshan District, Shenzhen, China 518055 Test specification ........................ : Standard ........................................ : 47 CFR FCC Part 15 Subpart C 15.247 & RSS 247 Issue 2, February 2017 TRF Originator .............................. : Shenzhen CTL Testing Technology Co., Ltd. Master TRF ................................... : Dated 2011-01 Date of receipt of test item ......... : Nov. 25, 2020 Date of sampling ......................... : Nov. 25, 2020 Date of Test Date ......................... : Nov. 25, 2020–Dec. 10, 2020 Data of Issue ................................ : Dec. 11, 2020 Result ........................................... : Pass Shenzhen CTL Testing 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 CTL Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTL Testing 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. V1.0 Page 2 of 32 Report No. CTL2011176011-WF TEST REPORT Test Report No. : CTL2011176011-WF Dec. 11, 2020 Date of issue Equipment under Test : Noah Multifunction Leak Sensor Sample No. CTL201117601-1-S001 Model /Type : N2-OTAA-01 Listed Models : N2-ABP-01 Applicant : Kairos IoT Water Controls LLC Address : 1254 Wincrest Ct NW, Kennesaw, GA, USA 30152 Manufacturer : Kairos IoT Water Controls LLC Address : 1254 Wincrest Ct NW, Kennesaw, GA, USA 30152 Test result Pass * * In the configuration tested, the EUT complied with the standards specified page 5. 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. V1.0 Page 3 of 32 Report No. CTL2011176011-WF ** Modified History ** Revisions Description Issued DataReport No. Remark Version 1.0 Initial Test Report Release2020-12-11 CTL2011176011-WF Tracy Qi V1.0 Page 4 of 32 Report No. CTL2011176011-WF Table of Contents Page 1. SUMMARY............................................................................................................................................................ 5 1.1. TEST STANDARDS ..................................................................................................................................................... 5 1.2. TEST DESCRIPTION ........................................................................................................................................................ 5 1.3. TEST FACILITY .............................................................................................................................................................. 6 1.4. STATEMENT OF THE MEASUREMENT UNCERTAINTY ............................................................................................................... 6 2. GENERAL INFORMATION ....................................................................................................................................... 8 2.1. ENVIRONMENTAL CONDITIONS ........................................................................................................................................ 8 2.2. GENERAL DESCRIPTION OF EUT ...................................................................................................................................... 8 2.3. DESCRIPTION OF TEST MODES AND TEST FREQUENCY .......................................................................................................... 8 2.4. EQUIPMENTS USED DURING THE TEST .............................................................................................................................. 9 2.5. RELATED SUBMITTAL(S) / GRANT (S) ................................................................................................................................ 9 2.6. MODIFICATIONS ........................................................................................................................................................... 9 3. TEST CONDITIONS AND RESULTS ......................................................................................................................... 10 3.1. CONDUCTED EMISSIONS TEST ....................................................................................................................................... 10 3.2. RADIATED EMISSIONS AND BAND EDGE .......................................................................................................................... 12 3.3. MAXIMUM PEAK CONDUCTED OUTPUT POWER ............................................................................................................... 17 3.4. 20DB AND 99% BANDWIDTH ..............................................................................…

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