2AOX8-F2200Bridge Unit

Flume Intelligent Water Monitoring System Operating Overview Page 1 | 10 Introduction This document provides an operating overview of the Flume Intelligent Water Monitoring System illustrated in Figure 1. This system remotely monitors water usage in real time by utilizing a Flume Sensor attached to a water meter. The Sensor monitors and detects water flowing through the meter by analyzing the water meter’s magnetic coupling and processes the data to correlate it to real time flow rates. Data is transmitted through a Flume Bridge unit to the customer’s Wireless Access Point (WAP) to remote Cloud Server storage. Consumers may access the data with the Flume Application Software installed on electronics such as smart phones and tablets. Figure 1. System Overview. Cloud Server Flume Bridge Customer WAP Software Application Flume Sensor Flume Intelligent Water Monitoring System Operating Overview Page 2 | 10 Sensor Operation The battery powered Flume Sensor collects water data using a magnetometer sensor illustrated in Figure 2. The data collected by the uController is processed (8MHz operation), analyzed and formed into messages, stored into flash memory for transmission. Transmission is accomplished using the RMF69HCW 915MHz radio module. The RFM69HCW also receives configuration and firmware updates. The RFM69HCW radio module transmits through a low pass harmonic filter (Johanson Technology 0915LP15B026) and printed antenna. The Bow-Tie antenna is located horizontally relative to the ground plane. Figure 2. Flume Sensor Block Diagram. The Flume Sensor, approved for operation at the system level (FCC ID: 2AOX8-F2100), communicates in a bidirectional manner with the Flume Bridge. Flume Intelligent Water Monitoring System Operating Overview Page 3 | 10 Bridge Operation The USB wall wart powers the Flume Bridge to communicate with the Flume Sensor and customer WAP as illustrated in Figure 3. Operation is controlled by the ESP8266 uController/WiFi module operating at 160MHz. This module is precertified by the FCC (FCC ID: 2AHMR-ESP12) and includes on module 2.4GHz WiFi capabilities and PCB antenna. WiFi b/g/n operations are supported but not HT40 in 802.11n operation. Communications with the Sensor are accomplished by the RFM69HCW 915MHz radio module. The RFM69HCW 915 MHz radio module transmits through a low pass harmonic filter (Johanson Technology 0915LP15B026) and a whip antenna protruding from the Sensor enclosure. The antenna is (Anaren 66089-0906) located horizontal to the ground. The PCB antenna connection uses coplaner waveguide techniques on a double sided 0.062” thick PCB. Both the antenna and filter utilize the same ground as the ESP8266 and the USB wall wart. Both WiFi and 915MHz transmissions may occur simultaneously in a co-location manner. The power from the USB wall wart is protected from transients using an 8V TVS (SMBJ8.0A). Any shorts or internal faults are protected by a 1.5A resettable PTC (1206L150). Previous testing with positive and negative air discharge transients was performed on the USB power connection at 15KV per EN 6100D-4-2 with no adverse permanent effects beyond a system reset occurring by the reset monitor (BD48K45). On board 3.3V voltage regulation is performed by the BD33GC0WEF regulator that is disabled if the external USB power falls below 4.5V. Figure 3. Flume Bridge Block Diagram. The Flume Bridge, approved for operation at the system level (FCC ID: 2AOX8-F2200), communicates in a bidirectional manner with the customer WAP and Flume Sensor for message operation. Flume Intelligent Water Monitoring System Operating Overview Page 4 | 10 Message Operation Messages from/to the Sensor are transmitted using 915MHz with the Bridge which also communicates with the customer WiFi network using 2.4GHz. An overview of the Sensor and Bridge message communication appears below. Sensor/Bridge Communication A frequency hopping method is utilized across 50 channels where the channel dwell time is 150ms. For example, in a 20 second transmission there are 20/150ms=133.33 channels. Given the sequence repeats every 50 channels each channel will on average be occupied by 1333.33/50*150ms=400ms. Bridge/WAP Communication Industry standard 2.4MHz WiFi communications are utilized between the Flume Bridge and customer supplied WAP. The ubiquitous 802.11 b/g/n operation is supported with WPA/WPA2 and WEP/TKIP/AES in station mode. Messages transmitted through the customer WiFi network are routed to the Flume Cloud Storage where the messages are parsed, and data stored into a data base for further reporting by the Flume Software Application. Flume Intelligent Water Monitoring System Operating Overview Page 5 | 10 Software Application The Flume Software Application provides intelligent leak detection and water management for the residential home. This application work in conjunction with the Flume Sensor and Flume Bridge notifies of water leaks and provides water usage in near real-time. Dashboard Monitor, in near real-time, water usage by a house and irrigation. Figure 4 illustrates a Dashboard displaying Today’s water use against a daily budget and water Status. Budgets may be displayed for daily, monthly or yearly time frames. Drilling down provides more detail. Figure 4. Application Dashboard. Flume Intelligent Water Monitoring System Operating Overview Page 6 | 10 Detailed Usage Figure 5 illustrates detailed usages over hourly, daily, weekly, monthly and yearly resolutions. Compare water usage to others that have similar households. Set budgets to help control how much water is used and receive notification when approaching limits. Figure 5. Detailed Usage and Comparison. Flume Intelligent Water Monitoring System Operating Overview Page 7 | 10 Notifications See Figure 6 for example notifications. Notifications provide waning of possible leak detection and usage against a budget threshold. Near real-time notifications are provided via text messaging. Figure 6. Notifications. Flume In…

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Flume Pilot Participant and End User License Agreement (Pilot EULA) Last Updated April 17, 2017 Flume, Inc., a Delaware corporation with corporate oces located at 872 Higuera Street, San Luis Obispo, CA 93401 (“Flume”), desires to oer certain hardware and software products, developed by and proprietary to Flume or its licensors, on a pilot test basis (“Products”). The individual accessing this Product (“You” or “Participant”) desire(s) to test and evaluate Products in a real environment prior to purchasing Products. You have been selected by Flume or by an Insurer to participate in this Pilot Test Program and You are willing to participate subject to the following terms and conditions. You and Flume (the “Parties”) hereby agree as follows (hereinafter, this “Pilot Participant and End User License Agreement” or this “Agreement”): You will keep Products at your residence address during the Pilot Test period and shall not remove the Products. If requested, Flume will remove the Products at a mutually agreeable time. You may have the option at the conclusion of the Pilot Test to keep Products. However, Flume oers no warranties for maintaining the Products or ensuring that the Products still communicate after completion of the Pilot. Flume reserves the right to replace the Product with a newer production version when released. You will use Products under normal conditions and take reasonable precautions to protect Products while in your possession. You will allow Flume to have access, at reasonable times, and upon at least ve (5) days’ prior notice, to each test site for the purpose of inspecting, maintaining, repairing, testing, and performing analyses with Products (“Services”). You will provide reasonable assistance to Flume in gathering information relating to the performance of Products. You will complete a verbal or written evaluation of Products and Services, including evaluated strengths, weaknesses, and any recommended improvements. You acknowledge that Products contain valuable trade secret or condential information of Flume or its licensors and that Flume Product and Software Product are protected by intellectual property laws and treaties. You will take appropriate action to protect the condential aspects of Products to ensure that any person permitted access to Products does not provide condential information to others. You will not reverse-assemble, reverse-compile, or otherwise reverse-engineer Products, in whole or in part. You will notify Flume promptly at the following e-mail address and/or phone number if maintenance or repair of Products is necessary or if there is any loss or damage to Products: support@umetech.com You also accept the terms and conditions of the following End User License Agreement (EULA) prior to downloading the Flume software application Product that communicates with embedded software in the Flume sensor Product: End User License Agreement Notice to End User: There are two types of software covered by this END USER LICENSE AGREEMENT ("EULA"): (1) The Flume Product you have acquired contains embedded software (“Embedded Software”) which is integral to the Product's operation; and (2) Application Software provided to you on a downloadable basis (“Application Software”). Embedded Software and Application Software are collectively referred to as “Software” and are both subject to the terms and conditions contained in this EULA. Software is provided only for use with, and for authorized end users of, the Flume product you have acquired from Flume or its authorized representative ("Flume Product"). Portions of the Software may include or operate with Open Source software or libraries (“Open Source”). END USER LICENSE AGREEMENT TERMS This End User Software License Agreement (“EULA” or "Agreement") is a legally binding agreement governing the licensing of the Software and electronic Documentation by Flume, Inc. ("Flume") to the entity or person who has purchased or otherwise acquired a Flume Product, whether directly from Flume or from its authorized representative ( “You” or "End User"). For purposes of this Agreement, any software that is not Embedded Software or Application Software is software that may be associated with a separate end-user license agreement licensed to You under the terms of that license agreement. Software is provided only for use with the Flume Product and any other use of Software is strictly prohibited and may subject You to legal action. Software is provided to You under license, subject to the terms and conditions of this EULA. Any and all updates to Software shall also be subject to this EULA. If You use the Flume Product, You will be deemed to have accepted the terms and conditions of this EULA. If You do not intend to be bound to the terms of this EULA, Flume is not willing to license the Software to You; You may not use the Flume Product or the Software; and You must contact the party from whom You acquired the Flume Product for instructions on how to return the Flume Product. Flume and You (or “End User”) (each a “Party” or together the “Parties”) hereby agree as follows: 1. Denitions 1.1. “Aliate” means a business entity currently existing or later acquired that is controlled by, or is under common control with Flume. 1.2. “Documentation" means materials such as user's guides, program reference guides, quick reference guides, manuals, or similar materials associated with, or related to, the Flume Product, whether in printed; electronic online; or other form. 1.3. “Proprietary Information” means: (a) source code, object code, software, unpublished documentation, and any related internal design, system design, database design, algorithms, technology, technical data or information, implementation techniques, and trade secrets related to the Flume Product and/or the Software, (b) any other trade secrets marked appropriately or identied as proprietary or condential, when disclosed; all of which are not publicly availabl…

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Flume Inc. 75 Higuera Street Suite 120 San Luis Obispo, CA 93401 USA Flume hereby declares that the following requirements will be satisfied via final packaging, electronic user manual and EULA, prior to this product being available for sale. Ryan Holtz 8 June 2020 Dir, Operation and Supply Chain __________________________

Flume,Inc 1 Date: 05/15/20 Subject: Website for Regulatory Information The customer is directed to either the Android or Apple store to download the application when the product is purchased. In order to operate the device, the application download and registration is required. The application provides installation steps, pairing and registration. The customer then places the sensor on the meter and water usage is now available on the phone. Operating instructions are provided from the application. Below is a screenshot of the sign-up page. The licensing link at the bottom brings up the second page which includes the FCC and ISED regulatory information for user. Sincerely, Alan Beverly R A lan Beverly / VP Engineering [email protected] / 872 Higuera St., San Luis Obispo, CA 93401, United States

SCS-F19: Confidentiality Request Letter Page 1 of 2 Rev 6.0 775 Montague Expressway Milpitas, CA 95035 Tel: 408-526-1188 Fax: 408-526-1088 Email: [email protected] Confidentiality Request Letter Reason for Amendment (current / obsolete) Revision History Approved Date From To Initial Release (obsolete) 1.0 1.0 Nov-14-2006 Adding CFR 2.459 (obsolete) 1.0 2.0 August – 11 - 2008 Updated company template & Added text box (obsolete) 2.0 3.0 Jan-31-2012 Added IC confidentiality letter form (obsolete) 3.0 4.0 March-26-2015 Corrections to STC form. Added reference to KDB (obsolete) 4.0 5.0 Nov-19-2015 Updated company logo (current) 5.0 6.0 Jun-26-2019 SCS-F19: Confidentiality Request Letter Page 2 of 2 Rev 6.0 6/9/20 To: Federal Communications Commission Office of Engineering and Technology Equipment Authorization Division 7345 Oakland Mills Road Columbia, Maryland 21046 Subject: Short Term Confidentiality Request for FCC ID: 2AOX8-F2200 To Whom It May Concern: Pursuant to sections 0.457 and 0.459 of CFR 47, and to avoid premature release of sensitive information prior to marketing or release of the product to the public, the applicant requests the following documents contained in this certification application be temporarily withheld from public disclosure for an initial period of 45 or 180 days; or for a specified date of / / not to exceed 180 days from the Grant Date. See KDB 726920. - e.g. User Manual - e.g. Internal Photos - e.g. Test Setup photos - e.g. External Photos. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Sincerely, Alan Beverly Alan Beverly, VP Engineering Alan Beverly: [email protected], (805)234-3711 Flume Inc. 75 Higuera St., STE 120 San Luis Obispo, CA 93401

SCS-F19: Confidentiality Request Letter Page 1 of 2 Rev 6.0 775 Montague Expressway Milpitas, CA 95035 Tel: 408-526-1188 Fax: 408-526-1088 Email: [email protected] Confidentiality Request Letter Reason for Amendment (current / obsolete) Revision History Approved Date From To Initial Release (obsolete) 1.0 1.0 Nov-14-2006 Adding CFR 2.459 (obsolete) 1.0 2.0 August – 11 - 2008 Updated company template & Added text box (obsolete) 2.0 3.0 Jan-31-2012 Added IC confidentiality letter form (obsolete) 3.0 4.0 March-26-2015 Corrections to STC form. Added reference to KDB (obsolete) 4.0 5.0 Nov-19-2015 Updated company logo (current) 5.0 6.0 Jun-26-2019 SCS-F19: Confidentiality Request Letter Page 2 of 2 Rev 6.0 6/9/20 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD Subject: Permanent Confidentiality Request for FCC ID: 2AOX8-F2200 Pursuant to sections 0.457 and 0.459 of CFR 47, we respectfully request permanent confidential treatment of the following Exhibits accompanying this application as: - e.g. Block Diagram - e.g. Schematics - e.g. Operational Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Alan Beverly Alan Beverly, VP Engineering Alan Beverly: [email protected], (805)234-3711 Flume Inc. 75 Higuera St., STE 120 San Luis Obispo, CA 93401

EUT Photo-External view EUT – Front View EUT – Rear View EUT – Top View EUT – Bottom View EUT – Left View EUT – Right View

EUT Photo-Internal View EUT – Uncover View PCB Front View PCB Rear View Power Adapter Front View

Report No.: FCC_RF_SL20040701-FLU-002A1_Bridge_MPE Page No. 1 / 6 Report Format Version: 6.1.1 RF Exposure Report Report No.: FCC_RF_SL20040701-FLU-002A1_Bridge_MPE FCC ID: 2AOX8-F2200 2AHMR-ESP12S Test Model: F2200 Series Model: N/A Received Date: 04/06/2020 Test Date: 04/08/2020-04/28/2020 Issued Date: 06/01/2020 Applicant: Flume Inc Address: 75 Higuera St Suite 120, San Luis Obispo,CA-93405 Manufacturer: Flume Inc Address: 75 Higuera St Suite 120, San Luis Obispo,CA-93405 Issued By: Bureau Veritas Consumer Products Services, Inc. Lab Address: 775 Montague Expressway, Milpitas, CA 95035 Test Location (1): 775 Montague Expressway, Milpitas, CA 95035 FCC Registration / Designation Number: 540430 This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. The report must not be used by the client to claim product certification, approval, or endorsement by A2LA or any government agencies. Report No.: FCC_RF_SL20040701-FLU-002A1_Bridge_MPE Page No. 2 / 6 Report Format Version: 6.1.1 Table of Contents Release Control Record .................................................................................................................................. 3 1 Certificate of Conformity ...................................................................................................................... 4 2 RF Exposure .......................................................................................................................................... 5 2.1 Limits for Maximum Permissible Exposure (MPE) .............................................................................. 5 2.2 MPE Calculation Formula ................................................................................................................... 5 2.3 Classification ....................................................................................................................................... 5 2.4 Antenna Gain ...................................................................................................................................... 5 2.5 Calculation Result of Maximum Conducted Power ............................................................................. 6 3 Conclusion ............................................................................................................................................ 6 Report No.: FCC_RF_SL20040701-FLU-002A1_Bridge_MPE Page No. 3 / 6 Report Format Version: 6.1.1 Release Control Record Issue No. Description Date Issued FCC_RF_SL20040701-FLU-002A1_Bridge_MPE Initial Release 06/01/2020 Report No.: FCC_RF_SL20040701-FLU-002A1_Bridge_MPE Page No. 4 / 6 Report Format Version: 6.1.1 1 Certificate of Conformity Product: Flume Bridge Brand: Flume Test Model: F2200 Sample Status: Engineering sample Applicant: Flume Inc Test Date: 04/08/2020-04/28/2020 Standards: FCC Part 2 (Section 2.1093) KDB 447498 D01 General RF Exposure Guidance v06 IEEE C95.1-1992 The above equipment has been tested by Bureau Veritas Consumer Products Services, Inc., Milpitas Branch, and found compliance with the requirement of the above standards. The test record, data evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts of the measurements of the sample’s EMC characteristics under the conditions specified in this report. Prepared by : , Date: 06/01/2020 Deon Dai / Test Engineer Approved by : , Date: 06/01/2020 Chen Ge / Engineer Reviewer Report No.: FCC_RF_SL20040701-FLU-002A1_Bridge_MPE Page No. 5 / 6 Report Format Version: 6.1.1 2 RF Exposure 2.1 Limits for Maximum Permissible Exposure (MPE) Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Average Time (minutes) Limits For General Population / Uncontrolled Exposure 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f 2 )* 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 2.2 MPE Calculation Formula Pd = (Pout*G) / (4*pi*r 2 ) Where Pd = power density in mW/cm 2 Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = distance between observation point and center of the radiator in cm 2.3 Classification The antenna of this product, under normal use condition, is at least 20cm away from the body of the user. So, this device is classified as Mobile Device. 2.4 Antenna Gain The antenna type is Inverted F antenna with 0.9 dBi gain. Report No.: FCC_RF_SL20040701-FLU-002A1_Bridge_MPE Page No. 6 / 6 Report Format Version: 6.1.1 2.5 Calculation Result of Maximum Conducted Power Type Max Power (dBm) Max Power (mW) Turn-Up Tolerance Antenna Gain (dBi) Distance (cm) Power Density (mW/cm 2 ) Limit (mW/cm 2 ) FHSS 16.153 41.24 ±1dB 0…

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Report No.: FCC_IC_RF_SL20040701-FLU-002A1_Bridge Page No. 1 / 43 Report Format Version: 6.1.1 FCC IC Test Report Report No.: FCC_IC_RF_SL20040701-FLU-002A1_Bridge FCC ID: 2AOX8-F2200 IC: 26125-F2200 Test Model: F2200 Received Date: 04/06/2020 Test Date: 04/08/2020-04/28/2020 Issued Date: 06/01/2020 Applicant: Flume Inc Address: 75 Higuera St Suite 120, San Luis Obispo,CA-93405 Manufacturer: Flume Inc Address: 75 Higuera St Suite 120, San Luis Obispo,CA-93405 Issued By: Bureau Veritas Consumer Products Services, Inc. Lab Address: 775 Montague Expressway, Milpitas, CA 95035 Test Location (1): 775 Montague Expressway, Milpitas, CA 95035 FCC Registration / Designation Number: 540430 ISED# / CAB identifier: 4842D This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. The report must not be used by the client to claim product certification, approval, or endorsement by A2LA or any government agencies. Report No.: FCC_IC_RF_SL20040701-FLU-002A1_Bridge Page No. 2 / 43 Report Format Version: 6.1.1 Table of Contents Release Control Record .................................................................................................................................. 4 1 Certificate of Conformity ...................................................................................................................... 5 2 Summary of Test Results ..................................................................................................................... 6 2.1 Measurement Uncertainty ................................................................................................................... 6 2.2 Modification Record ............................................................................................................................ 6 3 General Information .............................................................................................................................. 7 3.1 General Description of EUT ................................................................................................................ 7 3.2 Description of Test Modes ................................................................................................................... 8 3.3 Description of Support Units ............................................................................................................... 9 3.3.1 Configuration of System under Test .................................................................................................... 9 3.4 General Description of Applied Standards .......................................................................................... 9 4 Test Types and Results ...................................................................................................................... 10 4.1 Radiated Emission Measurement ..................................................................................................... 10 4.1.1 Limits of Radiated Emission .............................................................................................................. 10 4.1.2 Test Instruments ................................................................................................................................. 11 4.1.3 Test Procedures ................................................................................................................................. 12 4.1.4 Deviation from Test Standard ............................................................................................................ 13 4.1.5 Test Setup .......................................................................................................................................... 13 4.1.6 EUT Operating Conditions ................................................................................................................. 14 4.1.7 Test Results ....................................................................................................................................... 15 4.2 Conducted Emission Measurement .................................................................................................. 20 4.2.1 Limits of Conducted Emission Measurement .................................................................................... 20 4.2.2 Test Instruments ................................................................................................................................ 20 4.2.3 Test Procedures ................................................................................................................................. 21 4.2.4 Deviation from Test Standard ............................................................................................................ 21 4.2.5 Test Setup .........................................…

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Setup Photo View Radiated Emission Test below 1GHz Front View Radiated Emission Test below 1GHz Rear View Radiated Emission Test above 1GHz Front View Radiated Emission Test above 1GHz Rear View Conducted Emission Test Front View Conducted Emission Test Side View