XQC-WST621Flood and Freeze Sensor

WST-621 Flood and Freeze Sensor patent pending Installation Manual SPECIFICATIONS Frequency: 319.5 MHz Battery: One 3Vdc lithium CR2450 (620mAH) Operating Temperature: 32° – 120°F (0° – 49°C) Operating Humidity: 5 – 95% RH non condensing Battery life: up to 10 years Compatible with Interlogix / GE receivers Detect Freeze at 41°F (5°C) restores at 45°F (7°C) Supervisory signal interval: 64 min(approx.) Detect a minimum of 1/64 th in of water OPERATION The WST-621 sensor is designed to detect water across the gold probes and will alert immediately when present. The Freeze sensor will trigger when the temperature is below 41°F (5°C) and will send a restoral at 45°F (7°C). ENROLLING To enroll the sensor, set your panel into sensor learn mode. Refer to your specific alarm panel instruction manual for details on these menus. Flood and freeze will enroll on separate serial numbers. 1.On the WST-621 locate the pry points on opposite edges of the sensor. Carefully use a plastic pry tool or standard slot head screwdriver to remove the top cover. (Tools not included) 2.Insert the CR2450 battery with the (+) symbol facing up, if not already installed. 3.To learn in as a flood sensor, press and hold the Learn Button (SW1) for 1 - 2 seconds, then release. A single short on/off blink at 1 second confirms flood learn is initiated. The LED will remain solid ON during the learn transmission. Repeat as required. 4.To learn the freeze sensor, press and hold the Learn Button (SW1) for 2 - 3 seconds, then release. A single short on/off blink at 1 second plus a double on/off blink at 2 seconds confirms freeze learn is initiated. The LED will remain solid ON during the learn transmission. Repeat as required. 5.After successful enrollment, verify the gasket in the top cover is properly seated, then snap the top cover onto the bottom cover aligning the flat sides. Inspect the seam all the way around the edge of the device to ensure it is completely sealed. Testing the Unit After successful enrollment, a test transmission sending current states can be initiated by pressing and immediately releasing the Learn Button (SW1), with the top cover open. The LED will remain solid ON during the button-initiated test transmission. With the unit fully assembled and sealed, placing wet fingers on any two probes will trigger a flood transmission. Note the LED will not illuminate for a wet flood test and remains OFF during all normal operation. PLACEMENT Place the flood detector anywhere that you wish to detect a flood or freezing temperature, such as under a sink, in or near a hot water heater, a basement or behind a washing machine. REPLACING THE BATTERY When the battery is low a signal will be sent to the control panel. To replace the battery: 1.On the WST-621 locate the pry points on opposite edges of the sensor, carefully use a plastic pry tool or standard slot head screwdriver to remove the top cover. (Tools not included) 2.Carefully remove the old battery. 3.Insert the new CR2450 battery with the (+) symbol facing up. 4.Verify the gasket in the top cover is properly seated, then snap the top cover onto the bottom cover, aligning the flat sides. Inspect the seam all the way around the edge of the device to ensure it is completely sealed FCC COMPLIANCE STATEMENT This equipment has been tested and found to comply with the limits for Class B digital devices, pursuant to 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. 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 instruction manual, 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: •Re‐orient or relocate the receiving antenna • Increase the separation between the equipment and receiver • Connect the equipment to an outlet on a different circuit from the receiver • Consult the dealer or an experienced radio/TV contractor for help. © 2023 Ecolink Intelligent Technology Inc. Warning: Changes or modifications not expressly approved by Ecolink Intelligent Technology Inc. could void the user’s authority to operate the equipment. This device complies with Industry Canada licence‐exempt RSS standard(s). Operation is subject to the following two conditions: (1)this device may not cause interference, and (2)this device must accept any interference, including interference that may cause undesired operation of the device. C’et appareil est conforme la norme d'Industrie Canada exempts de licence RSS. Son fonctionnement est soumis aux deux conditions suivantes: (1)c’et appareil ne peut pas provoquer d'interférences, et (2)c’et appareil doit accepter toute interférence, y compris les interférences qui peuvent causer un mauvais fonctionnement de la dispositif. FCC ID: XQC-WST621 IC:9863B-WST621 WARRANTY Ecolink Intelligent Technology Inc . warrants that for a period of 5 years from the date of purchase that this product is f ree from defects in material and workmanship. This warranty does not apply to damage caused by shipping or handling, or damage caused by accident, abuse, misuse, misapplication, ordinary wear, improper maintenance, failure to follow instructions or as a result of any unauthorized modifications. If t here is a defect in materials and workmanship under normal use within the warranty period Ecolink Intelligent Technology Inc. shall, at its option…

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WST-621 Flood and Freeze Sensor patent pending Installation Manual Specifications Frequency: 319.5 MHz Operating Temperature: 32° – 120°F (0° – 49°C) Operating Humidity: 5 – 95% RH non condensing Battery: One 3Vdc lithium CR2450 (620mAH) Battery life: Up to 10 years D etect Freeze at 41°F (5°C) restores at 45°F (7°C) Detect a minimum of 1/64th in of water Compatible with Honeywell receivers Supervisory signal interval: 64 min(approx.) Package Contents 1x Flood and Freeze Sensor 1x Installation Manual 1x CR2450 Battery Optional Accessories (included in select kit s) 1x External Sensor Adapter / Mounting Bracket 2x Mounting Screws 1x Water Detection Rope Component Identification C omponent Identification (Optional Accessories) OPERATION The WST-621 sensor is designed to detect water across the gold probes and will alert immediately when present. The Freeze sensor will trigger when the temperature is below 41°F (5°C) and will send a restoral at 45°F (7°C). ENROLLING To enroll the sensor, set your panel into sensor learn mode. Refer to your specific alarm panel instruction manual for details on these menus. 1. On the WST-621 locate the pry points on opposite edges of the sensor. Carefully use a plastic pry tool or standard slot head screwdriver to remove the top cover. (Tools not included) 2.In sert the CR2450 battery with the (+) symbol facing up, if not already installed. 3.T o learn in as a flood sensor, press and hold the Learn Button (SW1) for 1 - 2 seconds, then release. A single short on/off blink at 1 second confirms flood learn is initiated. The LED will remain solid ON during the learn transmission. The Flood sensor enrolls as Loop 1. Repeat as required. 4.T o learn the freeze sensor, press and hold the Learn Button (SW1) for 2 - 3 seconds, then release. A single short on/off blink at 1 second plus a double on/off blink at 2 seconds confirms freeze learn is initiated. The LED will remain solid ON during the learn transmission. The Freeze sensor enrolls as Loop 2. Repeat as required. 5.After successful enrollment, verify the gasket in the top cover is properly seated, then snap the top cover onto the bottom cover aligning the flat sides. Inspect the seam all the wa y ar ound the edge of the device to ensure it is completely sealed. Note: Alternately, the 7 digit serial number printed on the back of each unit can be manually entered into the panel. For 2GIG systems the equipment code is “0637” Te sting the Unit After successful enrollment, a test transmission sending current states can be initiated by pressing and immediately releasing the Learn Button (SW1), with the top cover open. The LED will remain solid ON during the button-initiated test transmission. With the unit fully assembled and sealed, placing wet fingers on any two probes will trigger a flood transmission. Note the LED will not illuminate for a wet flood test and remains OFF during all normal operation. PLACEMENT Place the flood detector anywhere that you wish to detect a flood or freezing temperature, such as under a sink, in or near a hot water heater, a basement or behind a washing machine. As a best practice send a test transmission from the desired placement location to ensure the panel can receive it. Flood and Freeze Sensor External Sensor Adapter / Mounting Bracket CR2450 Battery Water Detection Rope Pry Points Insert battery this way Learn Button (SW1) Light Emitting Diode (LED) Gasket Mounting Screws (not shown) USING OPTIONAL ACCESSORIES The optional accessories enhance the Flood and Freeze Sensor installation by allowing additional installation locations, mounting on vertical surfaces such as walls or cabinet interiors with the External Sensor Adapter / Mounting Bracket and included screws. The Water Detection Rope can be routed down and across the floor covering a larger detection area. The length of the Water Detection Rope jacket is the detection area. Setup 1.Be sure to complete all enrollment steps before installing optional accessories. 2.Plug the Water Detection Rope into the socket located on the end of the External Sensor Adapter / Mounting Bracket. 3.Wrap the Water Detection Rope around the strain relief / retension posts on the back of the External Sensor Adapter / Mounting Bracket to prevent the rope from being inadvertantly unplugged. 4.Use screws to secure the External Sensor Adapter / Mounting Bracket, if desired. 5.Align the flat sides of the Flood and Freeze Sensor with the sides of the External Sensor Adapter / Mounting Bracket. Then snap the sensor into the bracket esuring the sensor is fully seated and the three retention tabs are fully engaged. 6.Route the length of the Water Detection Rope across the horizontal surface(s) to be monitored for water. N otes: •Up to ten (10) Water Detection Rope sensors can be chained together to futher extend the detection area(s). •Once water detection occurs using the Water Detection Rope, it may take several hours for the rope to sufficiently dry and a restore signal to be sent. Adequate ventilation will speed the drying process. •Improper connections between the WST-621 Flood and Freeze Sensor, the External Sensor Adapter / Mounting Bracket, and the Water Detection Rope can prevent flood detection, or cause false flood restore. Always verify connections are secure. REPLACING THE BATTERY When the battery is low a signal will be sent to the control panel. To replace the battery: 1.On the WST-621 locate the pry points on opposite edges of the sensor, carefully use a plastic pry tool or standard slot head screwdriver to remove the top cover. (Tools not included) 2.Carefully remove the old battery. 3.Insert the new CR2450 battery with the (+) symbol facing up. 4.Verify the gasket in the top cover is properly seated, then snap the top cover onto the bottom cover, aligning the flat sides. Inspect the seam all the way around the edge of the device to ensure it is completely sealed. FCC COMPLIANCE STATEMENT This equipment has been tested and found to comply w…

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February 02, 2023 CETCB 114 Olinda Drive Brea, CA 92823 Gentlemen: This is a letter of authorization to accept Compatible Electronics, Inc., specifically including the employees of Compatible Electronics, as an Agent for Ecolink Intelligent Technology, 2055 Corte Del Nogal, Carlsbad, CA 92011, for a period of one year, to sign applications before the Commission on our behalf, to make representations to you on our behalf, and to receive and exchange data between our company and the Commission in connection with certification of the following Ecolink Intelligent Technology product: WST-621 Flood Temp Sensor under FCC Docket Number 20780 and General Docket Number 80-284 pursuant to Part l5 of FCC Rules and Regulations. Please also accept this letter as an attestation that neither Ecolink Intelligent Technology nor any of its officers, directors, or persons holding 5% or more of the outstanding stock or shares, voting or non-voting, have been denied federal benefits under section 5301 of th e Anti-Drug-Abuse act of 1988,21 U.S.C. 853(a). In addition, Ecolink Intelligent Technology will n otify the Federal Communications Commission if, at any time, the situation changes causing Ecolink Intelligent Technology to be denied federal benefits. If you have any further questions or need additional information, please feel free to give me a call at (855)432-6546. Sincerely, Jay Stone Director of Engineering Ecolink Intelligent Technology 2055 Corte Del Nogal, Carlsbad, CA 92011

February 02, 2023 Compatible Electronics TCB 114 Olinda Drive Brea, California 92823 Subject: TCB application submittal Gentlemen: We, Ecolink Intelligent Technology, would like to declare that the application being submitted for the device with FCC ID: XQC-WST621, has not been submitted to another TCB or FCC for certification. If you have any questi ons, please do not hesitate t o contact us at (855)432-6546. Sincerely, Jay Stone Director of Engineering Ecolink Intelligent Technologies

11/02/2022 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 FCC ID: XQC-WST621 Subject: Attestation Statement pursuant to Part 2.911 (d)(7) Ecolink Intelligent Technology, Inc. “applicant”, as of the date of this filing, will also serve as the U.S. agent for service of process for the above reference FCC ID as required in Part 2.911(d)(7). The applicant acknowledges that they will maintain an agent for service of process 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. The applicant further acknowledges their responsibility to inform the FCC whenever the agent information changes. US Agent Company Name/Applicant: Ecolink Intelligent Technology, Inc. Contact Name: Jay Stone Address: 2055 Corte Del Nogal, Carlsbad, CA 92011 Telephone Number: (855)432-6546 E-Mail: [email protected] FRN: 0019081256 Sincerely, Ecolink Intelligent Technology, Inc. Jay Stone Director of Engineering [email protected]

11/02/2022 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 FCC ID: XQC-WST621 Subject: Attestation Statements pursuant to Part 2.911 (d)(5)(i) Ecolink Intelligent Technology at 2055 Corte Del Nogal, CA 92011 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 and according to FCC 22-84 and KDB 986446. Sincerely, Jay Stone Director of Engineering Ecolink Intelligent Technology 2055 Corte Del Nogal, Carlsbad, CA 92011 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

11/02/2022 Fed eral Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 FCC ID: XQC-WST621 Subject: Attestation Statements pursuant to Part 2.911 (d)(5)(ii) Ecolink Intelligent Technology, Inc.(“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, Jay Stone Director of Engineering Ecolink Intelligent Technology 2055 Corte Del Nogal, Carlsbad, CA 92011

1(1) February 02, 2023 Attention: Application Examiner RE: Request for Confidentiality Applicant: Ecolink Intelligent Technology FCC ID: XQC-WST621 To Whom It May Concern: Request is hereby submitted by Ecolink Intelligent Technology to withhold permanently from public review certain portions of the application for equipment certification for the referenced FCC identifiers. This request for confidentiality is made pursuant to 47 CFR 0.457(d) and 0.459 of the FCC Rules. In particular, the following sections of the application are to be kept permanently confidential: Schematics Detailed Block Diagrams Detailed Operational/Functional Description Ecolink Intelligent Technology has invested considerable time and materials in research and development to produce the referenced product. Disclosure of the permanently confidential portions of this application to competitors would not only give them significant competitive advantages in developing similar products, but would also disclose successful implementation of unpublished, leading edge technology developed by us. The information contained in the confidential exhibits listed above is not available to the public. Sincerely, Jay Stone Director of Engineering Ecolink Intelligent Technology 2055 Corte Del Nogal, Carlsbad, CA 92011

Top View of the EUT Bottom View of the EUT Side View of the EUT #1 Side View of the EUT #2 Side View of the EUT #3 Side View of the EUT #4

EUT Mounted to Cradle Top View of the Cradle Bottom View of the Cradle Side View #1 of the Cradle Side View #2 of the Cradle Side View #3 of the Cradle Side View #4 of the Cradle Cable for the Cradle

材質 比例 品號 規格 視角 日期 品名 繪圖 VISION MM 單位 版本 審核 承認 Model Number: WST-621 FCC ID: XQC-WST621 IC: 9863B-WST621 Model Number: WST-621 FCC ID: XQC-WST621 IC: 9863B-WST621 19mm 9mm Model Number: WST-621 FCC ID: XQC-WST621 IC: 9863B-WST621 The FCC ID label material for this is: Adhesive is acrylic resin Substrate is white paper Ink printed

Inside View of the EUT - View #1 Inside View of the EUT - View #2 Inside View of the EUT - View #3 Top View of the PCB Bottom View of the PCB Bottom View of the PCB - Closeup #1 Bottom View of the PCB - Closeup #2 Bottom View of the PCB - Closeup #3 Bottom View of the PCB - Closeup #4 Bottom View of the PCB - Closeup #5

Compatible Electronics, Inc.https://celectronics.com 114 Olinda Drive Brea, CA 92823 This device FCC ID: Prepared By: Date: The maximum power that the transmitter is capable of is 19.95 mW Applied duty cycle? no Using the following formula from section 4.3.1 of KDB 447498 at test separation distances ≤ 50 mm [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] * [ √ f(GHz)] Duty Cycle 50.00% Value 1-g (mW) 10-g (mW) 2.26 170 568 "Value" shall be ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR 1-g power limit 10-g power limit 265 663 “source-based” time-averaging based on an inherent property or duty-cycle of a device is allowed. An example of this is the determination of exposure from a device that uses digital technology such as a time-division multiple-access (TDMA) scheme for transmission of a XQC-WST621 Max Peak Power (dBm) Min Separation distance (mm) * Frequency (Ghz) < 50mm power limits for above frequency and distance When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion. 0.3195 5 13.00 Kyle FujimotoApril 12, 2023 SAREXJUST-B-0-43 D 02/27/2020

Report Number: B21209D1 FCC Part 15 Subpart B and C; FCC Section 15.231; and RSS-210 and RSS-GEN Test Report Flood and Freeze Sensor Model: WST-621 Brea Division 114 Olinda Drive Brea, CA 92823 (714) 579-0500 Newbury Park Division 1050 Lawrence Drive Newbury Park, CA 91320 (805) 480-4044 Lake Forest Division 20621 Pascal Way Lake Forest, CA 92630 (949) 587-0400 Page 1 of 21 FCC PART 15, SUBPART B and C; FCC 15.231; and RSS-210 & RSS GEN TEST REPORT for FLOOD AND FREEZE SENSOR Model: WST-621 Prepared for ECOLINK INTELLIGENT TECHNOLOGY, INC. 2055 CORTE DEL NOGAL CARLSBAD, CALIFORNIA 92011 Prepared by:_____________________ JAMES ROSS Approved by:____________________ KYLE FUJIMOTO COMPATIBLE ELECTRONICS INC. 114 OLINDA DRIVE BREA, CALIFORNIA 92823 (714) 579-0500 DATE: MARCH 29, 2023 REPORT APPENDICES TOTAL BODY A B C D E PAGES 21 2 2 2 15 50 92 This report shall not be reproduced except in full, without the written approval of Compatible Electronics. Report Number: B21209D1 FCC Part 15 Subpart B and C; FCC Section 15.231; and RSS-210 and RSS-GEN Test Report Flood and Freeze Sensor Model: WST-621 Brea Division 114 Olinda Drive Brea, CA 92823 (714) 579-0500 Newbury Park Division 1050 Lawrence Drive Newbury Park, CA 91320 (805) 480-4044 Lake Forest Division 20621 Pascal Way Lake Forest, CA 92630 (949) 587-0400 Page 2 of 21 TABLE OF CONTENTS Section / Title PAGE GENERAL REPORT SUMMARY 4 SUMMARY OF TEST RESULTS 5 1. PURPOSE 6 1.1 Decision Rule & Risk 7 2. ADMINISTRATIVE DATA 8 2.1 Location of Testing 8 2.2 Traceability Statement 8 2.3 Cognizant Personnel 8 2.4 Date Test Sample was Received 8 2.5 Disposition of the Test Sample 8 2.6 Abbreviations and Acronyms 8 3. APPLICABLE DOCUMENTS 9 4. DESCRIPTION OF TEST CONFIGURATION 10 4.1 Description of Test Configuration – Emissions 10 4.1.1 Cable Construction and Termination 10 5. LISTS OF EUT, ACCESSORIES AND TEST EQUIPMENT 11 5.1 EUT and Accessory List 11 5.2 Emissions Test Equipment 12 6. TEST SITE DESCRIPTION 13 6.1 Test Facility Description 13 6.2 EUT Mounting, Bonding and Grounding 13 6.3 Measurement Uncertainty 13 7. TEST PROCEDURES 14 7.1 RF Emissions 14 7.1.1 Conducted Emissions Test 14 7.1.2 Radiated Emissions Test 15 7.1.3 RF Emissions Test Results 16 7.1.4 Sample Calculations 17 7.1.5 Duty Cycle Calculation 18 7.1.6 99 % Bandwidth 19 7.1.7 -20 dB Bandwidth 19 7.1.8 Transmission Time 20 7.1.9 Variation of the Input Power 20 8. CONCLUSIONS 21 Report Number: B21209D1 FCC Part 15 Subpart B and C; FCC Section 15.231; and RSS-210 and RSS-GEN Test Report Flood and Freeze Sensor Model: WST-621 Brea Division 114 Olinda Drive Brea, CA 92823 (714) 579-0500 Newbury Park Division 1050 Lawrence Drive Newbury Park, CA 91320 (805) 480-4044 Lake Forest Division 20621 Pascal Way Lake Forest, CA 92630 (949) 587-0400 Page 3 of 21 LIST OF APPENDICES APPENDIX TITLE A Laboratory Accreditations and Recognitions B Modifications to the EUT C Models Covered Under This Report D Diagrams, Charts, and Photos  Test Setup Diagrams  Antenna and Effective Gain Factors  Radiated Emissions Photos E Data Sheets LIST OF FIGURES FIGURE TITLE 1 Conducted Emissions Test Setup 2 Layout of the Semi-Anechoic Test Chamber LIST OF TABLES TABLE TITLE 1 Radiated Emission Results Report Number: B21209D1 FCC Part 15 Subpart B and C; FCC Section 15.231; and RSS-210 and RSS-GEN Test Report Flood and Freeze Sensor Model: WST-621 Brea Division 114 Olinda Drive Brea, CA 92823 (714) 579-0500 Newbury Park Division 1050 Lawrence Drive Newbury Park, CA 91320 (805) 480-4044 Lake Forest Division 20621 Pascal Way Lake Forest, CA 92630 (949) 587-0400 Page 4 of 21 GENERAL REPORT SUMMARY This electromagnetic emission test report is generated by Compatible Electronics Inc., which is an independent testing and consulting firm. The test report is based on testing performed by Compatible Electronics personnel according to the measurement procedures described in the test specifications given below and in the "Test Procedures" section of this report. The measurement data and conclusions appearing herein relate only to the sample tested and this report may not be reproduced without the written permission of Compatible Electronics, unless done so in full. This report must not be used by the client to claim product certification, approval or endorsement by NVLAP, NIST or any agency of the United States government. Device Tested: Flood and Freeze Sensor Model: WST-621 S/N: N/A Product Description: The equipment under test is a battery-powered wireless sensor for detecting flooding or freezing conditions and wirelessly reporting these conditions to a wireless security panel. The transmit frequency is 319.50 MHz. The clock oscillator are 31 kHz, 4 MHz, 9.984375 MHz and 16 MHz. Dimensions: 2.50" diameter, 0.375" thick. Modifications: The EUT was not modified to meet the specifications. Customer: Ecolink Intelligent Technology, Inc. 2055 Corte Del Nogal Carlsbad, California 92011 Test Dates: September 21 and December 9, 2022; and March 29, 2023 Test Specifications covered by accreditation: Test Specifications: Emissions requirements CFR Title 47, Part 15, Subpart B; CFR Title 47, Part 15, Subpart C, sections 15.205, 15.209, and 15.231; RSS-210 and RSS-Gen Test Procedures: ANSI C63.4 and ANSI C63.10 Test Deviations: The test procedure was not deviated from during the testing. Report Number: B21209D1 FCC Part 15 Subpart B and C; FCC Section 15.231; and RSS-210 and RSS-GEN Test Report Flood and Freeze Sensor Model: WST-621 Brea Division 114 Olinda Drive Brea, CA 92823 (714) 579-0500 Newbury Park Division 1050 Lawrence Drive Newbury Park, CA 91320 (805) 480-4044 Lake Forest Division 20621 Pascal Way Lake Forest, CA 92630 (949) 587-0400 Page 5 of 21 SUMMARY OF TEST RESULTS TEST DESCRIPTION RESULTS 1 Conducted RF Emissions, 150 kHz – 30 MHz This test was not performed because the EUT operates on battery power only and cannot be plugged into the AC public mains. 2 Spurious Radiated RF Emissions, 9 kHz – 3.195 GHz (Transmitt…

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Antenna Spec WST-621: Flood_Freeze_G2 Rev 2, 02/02/2023 The device uses a wire antenna structure. It is a loop typ e antenna. The antenna is not accessible or changeable by the user. No modifications can be made to the radiating mechanism (antenna or tuning elements) by the user. The peak antenna gain is estimated to be -33.9 dBi. Peak antenna gain estimation : Peak antenna gain is estimated by extracting the Gain (G T ) from the Friis transmission equation. 푃 푅 푃 푇 = 휆 2 퐺 푇 퐺 푅 (4휋푅) 2 Assuming polarization match (linearly polarized) and no mismatch loss (tuned) in the direction of peak antenna gain at 3m separation; Freq = 319.5 MHz Rx antenna and gain : Com-Power Log Periodic (ALP-100) at 300 MHz (5.9 dBi) Tx : DUT P T : 13 dBm (conducted measurement at antenna input) P T : -47.1 dBm (received power at Log periodic antenna input) G T = -33.9 dBi (estimated)

FRONT VIEW WITHOUT EXTERNAL SENSOR ADAPTER ECOLINK INTELLIGENT TECHNOLOGY, INC. FLOOD AND FREEZE SENSOR MODEL: WST-621 FCC SUBPART B AND C; RSS-210 AND RSS-GEN – RADIATED EMISSIONS – BELOW 1 GHz PHOTOGRAPH SHOWING THE EUT CONFIGURATION FOR MAXIMUM EMISSIONS REAR VIEW WITHOUT EXTERNAL SENSOR ADAPTER ECOLINK INTELLIGENT TECHNOLOGY, INC. FLOOD AND FREEZE SENSOR MODEL: WST-621 FCC SUBPART B AND C; RSS-210 AND RSS-GEN – RADIATED EMISSIONS – BELOW 1 GHz PHOTOGRAPH SHOWING THE EUT CONFIGURATION FOR MAXIMUM EMISSIONS FRONT VIEW WITHOUT EXTERNAL SENSOR ADAPTER ECOLINK INTELLIGENT TECHNOLOGY, INC. FLOOD AND FREE ZE SENSOR MODEL: WST-621 FCC SUBPART B AND C; RSS-210 AND RSS-GEN – RADIATED EMISSIONS – ABOVE 1 GHz PHOTOGRAPH SHOWING THE EUT CONFIGURATION FOR MAXIMUM EMISSIONS REAR VIEW WITHOUT EXTERNAL SENSOR ADAPTER ECOLINK INTELLIGENT TECHNOLOGY, INC. FLOOD AND FREE ZE SENSOR MODEL: WST-621 FCC SUBPART B AND C; RSS-210 AND RSS-GEN – RADIATED EMISSIONS – ABOVE 1 GHz PHOTOGRAPH SHOWING THE EUT CONFIGURATION FOR MAXIMUM EMISSIONS FRONT VIEW WITH EXTERNAL SENSOR ADAPTER ECOLINK INTELLIGENT TECHNOLOGY, INC. FLOOD AND FREEZE SENSOR MODEL: WST-621 FCC SUBPART B AND C; RSS-210 AND RSS-GEN – RADIATED EMISSIONS – BELOW 1 GHz PHOTOGRAPH SHOWING THE EUT CONFIGURATION FOR MAXIMUM EMISSIONS REAR VIEW WITH EXTERNAL SENSOR ADAPTER ECOLINK INTELLIGENT TECHNOLOGY, INC. FLOOD AND FREEZE SENSOR MODEL: WST-621 FCC SUBPART B AND C; RSS-210 AND RSS-GEN – RADIATED EMISSIONS – BELOW 1 GHz PHOTOGRAPH SHOWING THE EUT CONFIGURATION FOR MAXIMUM EMISSIONS FRONT VIEW WITH EXTERNAL SENSOR ADAPTER ECOLINK INTELLIGENT TECHNOLOGY, INC. FLOOD AND FREEZE SENSOR MODEL: WST-621 FCC SUBPART B AND C; RSS-210 AND RSS-GEN – RADIATED EMISSIONS – ABOVE 1 GHz PHOTOGRAPH SHOWING THE EUT CONFIGURATION FOR MAXIMUM EMISSIONS REAR VIEW WITH EXTERNAL SENSOR ADAPTER ECOLINK INTELLIGENT TECHNOLOGY, INC. FLOOD AND FREEZE SENSOR MODEL: WST-621 FCC SUBPART B AND C; RSS-210 AND RSS-GEN – RADIATED EMISSIONS – ABOVE 1 GHz PHOTOGRAPH SHOWING THE EUT CONFIGURATION FOR MAXIMUM EMISSIONS