ZTL-G2WDALTA 900 MHz Rechargeable Water Detection Disc

ALTA ® 900 M HZ RECHARGEABLE WATER DETECTION DISC USER M ANUAL Remote Monitoring for Business By CAUTION SYM BOL EXPLANATION The following caut ion symbol appears on t he product . This symbol indicat es caut ion and a pot ent ial risk of danger. Carefully read t he warning at t ached wit h each symbol. TABLE OF CONTENTS I. ABOUT THE WATER DETECTION DISC1 FEATURES1 EXAM PLE APPLICATIONS1 II. SENSOR SECURITY 2 DISC COM M UNICATION SECURITY2 DATA SECURITY ON THE GATEWAY3 iM ONNIT SECURITY3 OPTIONAL DATA AUTHENTICATION3 III. ODER OF OPERATIONS FOR ACTIVATION4 SET-UP STEPS4 IV. REGISTRATION5 REGISTERING A WATER DETECTION DISK5 DISC PLACEM ENT AND CLEANING6 V. USING THE WATER DETECTION DISK7 ANTENNA ORIENTATION7 BUTTON AND LED BEHAVIOR 7 CHARGING BEHAVIOR8 VI. SENSOR OVERVIEW9 TAB BAR M ENU SYSTEM9 VII. SUPPORT15 WARRANTY INFORM ATION16 CERTIFICATIONS17 SAFETY RECOM M ENDATIONS (READ CAREFULLY)18 PAGE 1 I. ABOUT THE WATER DETECTION DISK GENERAL DESCRIPTION The ALTA ® Wireless Wat er Det ect ion Disk det ect s t he presence or non-presence of wat er. Convenient , wat er-t ight -disk design allows t he sensor t o be placed anywhere needed whet her dry or wet . Not e t hat wat er levels must be ~ 3mm deep t o t rigger det ect ion. The ALTA Wireless Wat er Det ect ion Disk det ect s when wat er is present by complet ing t he circuit bet ween t he t wo probe point s on t he bot t om of t he disk. When wat er is present , t he sensor will immediat ely t urn on t he radio and t ransmit t he dat a t o t he wireless gat eway and t he iM onnit ® Online Sensor M onit oring and Not ificat ion Syst em, allowing t he user t o immediat ely receive an SM S t ext , or email alert . The sensor can be configured t o det ect bot h t he presence and non-presence. -Wireless range of 1,200+ feet t hrough 12+ walls 1 -Frequency-Hopping Spread Spect rum (FHSS) -Int erference immunit y -Power management for longer bat t ery life 2 (12+ years on AA batteries) -Encrypt -RF ® Securit y (Diffie-Hellman Key Exchange + Advanced Encrypt ion St andard (AES)-128 Cipher Block Chaining (CBC) for sensor dat a messages) -Onboard dat a memory st ores up t o 512 readings per sensor: - 10-minut e Heart beat s = ~ 3.5 days - 2-hour Heart beat s = ~ 42 days -Over-t he-air updat es (fut ure-proof) -Free iM onnit basic online wireless sensor monit oring and not ificat ion syst em t o configure sensors, view dat a, and set alert s t o be sent via SM S t ext and email -Response t ime t o iM onnit : ~3 seconds 1 Act ual range may vary depending on t he environment and gat eway. 2 Bat t ery life is det ermined by t he sensor report ing frequency and ot her variables. Ot her power opt ions are also available. FEATURES Wi rel ess Range Compari son EXAM PLE APPLICATIONS -Wat er heat er t ank leak monit oring -Plumbing leak det ect ion -Dat a cent er subfloor wat er det ect ion -Wat er int rusion/flood det ect ion. -Crawlspace wat er int rusion monit oring -Reservoir/t ank -level monit oring II. SENSOR SECURITY The ALTA Wireless Wat er Det ect ion Disk has been designed and built t o securely manage dat a from sensors monit oring your environment and equipment . Hacking from bot net s are in t he headlines, M onnit ® Corporat ion has t aken ext reme measures t o ensure your dat a securit y is handled wit h t he ut most care and at t ent ion t o det ail. The same met hods ut ilized by financial inst it ut ions t o t ransmit dat a are also used in M onnit securit y infrast ruct ure. Securit y feat ures of t he gat eway include t amper proof net work int erfaces, dat a encrypt ion, and bank-grade securit y. M onnit ?s propriet ary sensor prot ocol uses low t ransmit power and specialized radio equipment t o t ransmit applicat ion dat a. Wireless devices list ening on open communicat ion prot ocols cannot eavesdrop on sensors. Packet level encrypt ion and verificat ion is key t o ensuring t raffic isn?t alt ered bet ween sensors and gat eways. Paired wit h a best -in-class range and power consumpt ion prot ocol, all dat a is t ransmit t ed securely from your devices. Thereby ensuring a smoot h, worry-free, experience. PAGE 2 DISC COM M UNICATION SECURITY The sensor and gat eway generat e a secure, wireless t unnel , Encrypt -RF? , bet ween t he t wo devices using ECDH-256 (Ellipt ic Curve Diffie-Hellman) public key exchange t o generat e a unique symmet ric key bet ween each pair of devices. Sensors and gat eways use t his link-specific key t o process packet level dat a wit h hardware-accelerat ed, 128-bit AES (Advanced Encrypt ion St andard) encrypt ion, which minimizes power consumpt ion t o provide t he indust ry's best bat t ery life. Thanks t o t his combinat ion, M onnit proudly offers robust bank-grade securit y at every level. For more informat ion on Et hernet Gat eway Securit y, visit ht t ps://monnit .blob.core.windows.net /sit e/document s/ot her/et hernet -gat eway-securit y-brief.pdf SensorPrint s TM is t he indust ry's only end-t o-end Int ernet of Things (IoT) dat a aut hent icat ion plat form for low-power wireless sensors. SensorPrint s aut hent icat es dat a by issuing a unique fingerprint for each device wit hin t he IoT. Dat a is secured from t he point of generat ion t o t he point of consumpt ion. Easy t o inst all and use, SensorPrint s is t he definit ive IoT securit y solut ion for any ent erprise. SensorPrint s aut hent icat es dat a at bot h t he point of generat ion and consumpt ion, creat ing t rust bet ween t he sensor and server levels. Implement ing 256-bit SHA 3 aut hent icat ion, SensorPrint s creat es a fingerprint for a M onnit Wireless Sensor t hat cont ains an aut hent icat ed sensor message. When dat a is t ransmit t ed from t he sensor, it is accompanied by a generat ed aut hent icat ion t oken. Upon receipt by t he applicat ion, t he t oken is evaluat ed via a crypt ographic hash funct ion against a unique per-sensor secret key. This st ep provides unprecedent ed full-coverage securit y for any M onnit user…

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3400 South West Temple, Salt Lake City, UT 84115 • 801-561-5555 • Monnit.com Date: February 5, 2026 To Whom It May Concern Subject: Authority to Act as an Agent Applicant: Monnit Corporation FCC ID: ZTL-G2WD Dear Sir/Madam: I hereby appoint UltraTech Engineering Labs Inc. (UltraTech) to act as my agent in preparation of this application for authorization of above equipment under F.C.C. Rules. The applicant hereby certify that neither the applicant nor any party to the application is subject to a denial of Federal benefits, that include FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. §862 because of a conviction for possession or distribution of a controlled substance. See 47 CFR 1.2002(b) for the definition of a “party” for these purposes. I also certify that the information provided, properly describe the device or system for which authorization is required. Regards, Bradley Walters – CEO Email: [email protected]

3400 South West Temple, Salt Lake City, UT 84115 • 801-561-5555 • Monnit.com Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: February 5, 2026 Subject: Attestation Statements Parts 2.911(d)(7) Applicant: Monnit Corporation FCC ID: ZTL-G2WD Grantee FRN: 0020736583 Dear Sir/Madam: This letter is to confirm that the Applicant Monnit Corporation will also serve as the U.S. Agent for Service of Process as required by 47 CFR 2.911(d)(7) for the above referenced FCC ID. The Applicant acknowledges that they must maintain an agent for no less than one year after terminating 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 Designated U.S. Agent information changes. Applicant: Name: Monnit Corporation FRN: 0020736583 Address: 3400 S. West Temple, South Salt Lake City, UT, 84115 Contact Person: Bradley Walters Tel.: 801-561-5555 Email: [email protected] Sincerely, Date: February 5, 2026 Signed by: Bradley Walters – CEO

3400 South West Temple, Salt Lake City, UT 84115 • 801-561-5555 • Monnit.com Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: February 5, 2026 Subject: Attestation Statements Parts 2.911(d)(5)(i) and 2.911(d)(5)(ii) Filing Applicant: Monnit Corporation FCC ID: ZTL-G2WD Grantee FRN: 0020736583 Attestation for 47 CFR section 2.911(d)(5)(i) Monnit Corporation, (“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. Attestation for 47 CFR section 2.911(d)(5)(ii) Monnit Corporation, (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Monnit Corporation, (“the applicant”) further certifies that the software to be loaded prior to marketing of the equipment identified above is not “covered” software manufactured by any entity including predecessors, successors, parents, subsidiaries, or affiliates or any entity which has rebranded or relabeled the software produced by the entity(ies) identified on the “Covered List.” Sincerely, Bradley Walters – CEO Email: [email protected]

3400 South West Temple, Salt Lake City, UT 84115 • 801-561-5555 • Monnit.com Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: February 5, 2026 Subject: FCC Application for FCC ID: ZTL-G2WD To Whom It May Concern: We, the undersigned, hereby attest to the fact that we will apply the Supplier's Declaration of Conformity (SDoC) procedure pursuant to Part 15, Subpart B - Unintentional Radiators, portion of this composite filing. Regards, Bradley Walters – CEO Email: [email protected]

Ultra Grou Accreditation Lab APEC CA 0 A SL2-I Kore a C 3000 B Oakv Cana Tel.: ( Fax.: ( Website: ww w Email: vic@ aTech up of Labs ns: Code: 0685 TEL CA0001 1309 0001/2049 AT-1945 N-E-1119R a KCC-RRA CA0001 Bristol Circle, ville, Ontario, da L6H 6G4 905) 829-1570 905) 829-8050 w.ultratech-labs.co @ultratech-labs.com Ma r Ult r 300 Oa k L6H Su b De a As a the If y o Yo u Sant San Auth om m rch 11, 2026 ratech Engin 0 Bristol Circ l kville, Ontario H 6G4 bject: F S ( A P M F ar Sir/Madam: appointed age above produc ou have any q urs truly, thosh Fernandez nthosh Fernan horized Agent eering Labs, le FCC Certifica Subpart C, S (FHSS) Oper Applicant: Product: Model No.: FCC ID: : ent for Monni ct. Kindly revi queries, pleas z ndez t , Inc. ation Author Section 15.24 rating in 902 Monnit C o ALTA® 90 MNS2-9-D ZTL-G2W it Corporatio ew all files up se do not hes rization Appl 47 - Frequenc - 928 MHz B orporation 00 MHz Rech DSC-WS D on, we submit ploaded to yo itate to contac ication Unde cy Hopping S and hargeable Wa t the applicati our electronic ct us. er FCC Part 1 Spread Spec ater Detectio on for certific filing site. 15, ctrum on Disc ation of

3400 South West Temple, Salt Lake City, UT 84115 • 801-561-5555 • Monnit.com Date: September 26, 2025 To Whom It May Concern Subject: Confidentiality Letter Applicant: Monnit Corporation FCC ID: ZTL-G2WD Dear Sir/Madam: The applicant would like to request the following documents submitted with this application for certification be withheld from public disclosure as per Section 0.457 & 0.459 of FCC Rules. 1. Operational Description 2. Block Diagram 3. Schematic(s) 4. Bill of Materials(BOM) 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. Regards, Bradley Walters – CEO Email: [email protected]

FCC ID: ZTL-G2WD 1.1. RF EXPOSURE REQUIRMENTS [§§ 15.247(i), 1.1310 & 2.1091] The criteria listed in the following table shall be used to evaluate the environmental impact of human exposure to radio-frequency (RF) radiation. FCC 47 CFR § 1.1310: 1.1.1. Method of Measurements Refer to Sections 1.1310, 2.1091 In order to demonstrate compliance with MPE requirements (see Section 2.1091), the following information is typically needed: (1) Calculation that estimates the minimum separation distance (20 cm or more) between an antenna and persons required to satisfy power density limits defined for free space. (2) Antenna installation and device operating instructions for installers (professional/unskilled users), and the parties responsible for ensuring compliance with the RF exposure requirement (3) Any caution statements and/or warning labels that are necessary in order to comply with the exposure limits (4) Any other RF exposure related issues that may affect MPE compliance FCC ID: ZTL-G2WD Calculation Method of RF Safety Distance : 22 44r EIRP r GP S       Where: P: power input to the antenna in mW EIRP: Equivalent (effective) isotropic radiated power S: power density mW/cm 2 G: numeric gain of antenna relative to isotropic radiator r: distance to centre of radiation in cm 1.1.2. RF Evaluation Evaluation of RF Exposure Compliance Requirements RF Exposure Requirements Compliance with FCC Rules Minimum calculated separation distance between antenna and persons required: *2.2 cm Manufacturer’ instruction for separation distance between antenna and persons required: 20 cm Caution statements and/or warning labels that are necessary in order to comply with the exposure limits Refer to User’s Manual for RF Exposure Information. Any other RF exposure related issues that may affect MPE compliance None. *The minimum separation distance between the antenna and bodies of users are calculated using the following formula: RF EXPOSURE DISTANCE LIMITS S EIRP S GP r      44 S = f/1500 = 902/1500 = 0.6 mW/cm 2 EIRP = 13.4+2.15=15.55 dBm = 10 15.55/10 mW = 36mW (Worst Case) (Minimum Safe Distance, r) = cm S EIRP 2.2 )6.0(4 36 4      FCC ID: ZTL-G2WD Manual statement

ALTA® 900 MHz Rechargeable Water Detection Disc Model: MNS2-9-DSC-WS FCC ID: ZTL- G2WD Applicant: Monnit Corporation 3400 S West Temple South Salt Lake, UT 84115 In Accordance With Federal Communications Commission (FCC) Part 15, Subpart C, Section 15.247 Frequency Hopping Spread Spectrum (FHSS) UltraTech's File No.: 26MONN055_FCC15C247 This Test report is Issued under the Authority of Tri M. Luu Vice President of Engineering UltraTech Group of Labs Date: March 11, 2026 Report Prepared by: Santhosh Fernandez Issued Date: March 11, 2026 Tested by: Angus Au Test Dates: August 7 to 15, 2025 and March 11, 2026  The results in this Test Report apply only to the sample(s) tested, and the sample tested is randomly selected.  This report must not be used by the client to claim product endorsement by any agency of the US Government.  This test report shall not be reproduced, except in full, without a written approval from UltraTech. UltraTech 3000 Bristol Circle, Oakville, Ontario, Canada, L6H 6G4 Tel.: (905) 829-1570 Fax.: (905) 829-8050 Website: www.ultratech-labs.com , Email: [email protected], Email: [email protected] FCC Part 15, Subpart C, Section 15.247 – FHSS Contents i Model: MNS2-9-DSC-WS FCC ID: ZTL-G2WD ULTRATECH GROUP OF LABS File #: 26MONN055_FCC15C247 3000 Bristol Circle, Oakville, Ontario, Canada L6H 6G4 March 11, 2026 Tel. #: 905-829-1570, Fax. #: 905-829-8050, Email: [email protected] , Website: http://www.ultratech-labs.com All test results contained in this engineering test report are traceable to National Institute of Standards and Technology (NIST) TABLE OF CONTENTS EXHIBIT 1. INTRODUCTION ......................................................................................................................................... 1 1.1. SCOPE ......................................................................................................................................................................... 1 1.2. REVISION HISTORY ....................................................................................................................................................... 1 1.3. RELATED SUBMITTAL(S)/GRANT(S) ................................................................................................................... 1 1.4. NORMATIVE REFERENCES ................................................................................................................................... 1 EXHIBIT 2. PERFORMANCE ASSESSMENT .............................................................................................................. 2 2.1. CLIENT INFORMATION .......................................................................................................................................... 2 2.2. EQUIPMENT UNDER TEST (EUT) INFORMATION .............................................................................................. 2 2.3. EUT’S TECHNICAL SPECIFICATIONS .................................................................................................................. 3 2.4. ASSOCIATED ANTENNA DESCRIPTIONS ........................................................................................................... 3 2.5. LIST OF EUT’S PORTS ............................................................................................................................................. 3 2.6. ANCILLARY EQUIPMENT: ..................................................................................................................................... 3 EXHIBIT 3. EUT OPERATING CONDITIONS AND CONFIGURATIONS DURING TESTS ............................... 4 3.1. CLIMATE TEST CONDITIONS ................................................................................................................................ 4 3.2. OPERATIONAL TEST CONDITIONS & ARRANGEMENT FOR TESTS .............................................................. 4 EXHIBIT 4. SUMMARY OF TEST RESULTS ............................................................................................................... 5 4.1. TEST LAB AND LOCATION .................................................................................................................................... 5 4.2. APPLICABILITY & SUMMARY OF EMC EMISSION TEST RESULTS ............................................................... 5 4.3. MODIFICATIONS INCORPORATED IN THE EUT FOR COMPLIANCE PURPOSES ......................................... 5 EXHIBIT 5. MEASUREMENTS, EXAMINATIONS & TEST DATA FOR EMC EMISSIONS ............................... 6 5.1. POWER LINE CONDUCTED EMISSIONS [§15.207(A)] ......................................................................................... 6 5.1.1. Limit(s) ................................................................................................................................................................ 6 5.1.2. Method of Measurements ..................................................................................................................................... 6 5.1.3. Test Arrangement ................................................................................................................................................ 6 5.1.4. Test Equipment List ............................................................................................................................................. 6 5.1.5. Test Data ............................................................................................................................................................. 7 5.2. COMPLIANCE WITH FCC PART 15 – GENERAL TECHNICAL REQUIREMENTS ......................................... 10 5.3. PROVISIONS FOR FREQUENCY HOPPING SYSTEMS [§ 15.247(A)(1)] ........................................................... 12 5.3.1. Limits ................................................................................................................................................................. 12 5.3…

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Monnit Corporation IC: 9794A‐G2WD FCC ID: ZTL‐G2WD Radiated Emissions Monnit Corporation IC: 9794A‐G2WD FCC ID: ZTL‐G2WD Monnit Corporation IC: 9794A‐G2WD FCC ID: ZTL‐G2WD Monnit Corporation IC: 9794A‐G2WD FCC ID: ZTL‐G2WD Powerline Conducted Emissions Monnit Corporation IC: 9794A‐G2WD FCC ID: ZTL‐G2WD