FCC ID: 2AU4DDDQ Radon Alarm

Pull Attic Bedroom Living Room Kitchen Laundry Room Basement pCi/L English: This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada s licence-exempt RSS(s). Operation is subject to the following two conditions:

(1) This device may not cause interference.

(2) This device must accept any interference, including interference that may cause undesired operation of the device. This equipment complies with Canada radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. French: Cet appareil contient un ou plusieurs metteurs/rcepteurs exempts de licence qui sont conformes aux normes RSS d'Innovation, Sciences et Dveloppement conomique Canada. Son utilisation est soumise aux deux conditions suivantes :

(1) Cet appareil ne doit pas causer d'interfrences.

(2) Cet appareil doit accepter toute interfrence, y compris celles susceptibles de provoquer un fonctionnement indsirable de l'appareil. Cet quipement est conforme aux limites d'exposition aux rayonnements fixes par le Canada pour un environnement non control. Cet quipement doit tre install et utilis en respectant une distance minimale de 20 cm entre l'metteur et votre corps.

J412002000084 XR0A-iR(

J401001000021 20260604 20260604 20260604 V1.0 1.38mm 1.38mm 0.8mm 0.8mm 7mm Model: XR0A-iR SN: XR0A-iR-UL560001 1.38mm 1.2mm 1.2mm 21.8mm FCC ID: 2AU4DDDQ IC: 32919-ABI HVIN: XR0A-IR-MAIN_V0.1B 1.5mm 1.5mm S N SN ) Mont ser r at , Medium PANTONE COOL GRAY 7C SN: XR0A-iR-UL560001 SN:

XR0A-iR-UL560001-

16 XR0A-iR-UL560001--------

XR0A-iR-UL560001 XR0A-iR-UL560001...560009...56000A...56000F...560010

X-Sense Innovations Co., Ltd. Authority to Act as Agent Date: June 9, 2026 American Certification Body, Inc. 313 Park Avenue Suite 300 Falls Church, VA 22046 To Whom It May Concern:

______ Shenzhen UnionTrust Quality and Technology Co., Ltd.______ is authorized to act on our behalf, until otherwise notified, for applications to American Certification Body, Inc. (ACB). We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. We also declare that the information provided to the FCC is true and correct to the best of our knowledge (47 CFR 2.911(d)) and we have been informed of the grantee responsibilities (47 CFR 2.909) with regard to certified equipment. Thank you, Agency Agreement Expiration Date: _____ 12 months___ By:

__________________________ ______Sam Liang_____

(Signature1)

(Print name) Title:

_____Compliance Officer___ On behalf of: ___X-Sense Innovations Co., Ltd.__

(Company Name) Telephone:

___755 2267 0560______ 1 - Must be signed by applicant contact given for applicant on the FCC site, or by the authorized agent if an appropriate authorized agent letter has been provided. Letters should be placed on appropriate letterhead. 050222-17

X-Sense Innovations Co., Ltd. Certification Application Attestation Statements Date: August 12, 2026 American Certification Body, Inc. 313 Park Avenue Suite 300 Falls Church, VA 22046 To Whom It May Concern:

Statement for 47 CFR section 2.911(d)(5)(i) ______( X-Sense Innovations Co., Ltd.)______ certifies that as of the date of the application the equipment for which authorization is sought is not covered equipment1 prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, including affiliates or subsidiaries of the named companies, the applicant must include an explanation on why the equipment is not covered equipment. Additional Explanation: <N/A>

Statement for 47 CFR section 2.911(d)(5)(ii) ______( X-Sense Innovations Co., Ltd.)______ (the applicant) certifies that, as of the date of the filing of this application, the applicant - is / - is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates see KDB 986446 Question 5) as an entity producing covered equipment. The applicant also certifies that the device does not have cybersecurity and/or anti-virus software produced by Kaspersky Lab, Inc or any of its successors and assignees identified on the covered list installed on the device, nor will it be installed by the applicant at any time after certification. Thank you, By:

(Signature2) ________Sam Liang ______

(Print name) Title:

____Compliance Officer ____ Company:

___X-Sense Innovations Co., Ltd. ____ Telephone:

__755 2267 0560 ____ 1 - The Commissions Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commissions 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 . 2 - Letters must be placed on appropriate letterhead. 092723-17 rev 10

X-Sense Innovations Co., Ltd. Request for Confidentiality Date: August 12, 2026 Subject: Confidentiality Request for: ___FCC ID: 2AU4DDDQ and IC: 32919-ABI ____ Pursuant to FCC 47 CFR 0.457(d) and 0.459 and/or IC RSP-100, Section 12.4, the applicant requests that a part of the subject application(s) be held confidential. Type of Confidentiality Requested Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Exhibit Block Diagrams Permanent

--------------------------- External Photos Permanent *1 Internal Photos Operation Description/Theory of Operation Permanent Permanent Parts List & Placement/BOM Permanent Tune-Up Procedure Schematics Permanent

--------------------------- Test Setup Photos Permanent *1 Users Manual ____X-Sense Innovations Co., Ltd._____ has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality:

The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Sincerely, By:

______Compliance Officer__

(Signature/Title2) _______Sam Liang________

(Print name) 1 - The asterisked items (*) require further information to be provided to ACB before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 and the specific Document link for D01 found at:

https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. 2 - Must be signed by applicant contact given for applicant on the FCC site, or by the authorized agent if an appropriate authorized agent letter has been provided. Letters should be placed on appropriate letterhead. 050222-17

X-Sense Innovations Co., Ltd. Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 U.S. Agent Designation 7/30/2026

[X-Sense Innovations Co., Ltd.]acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2AU4DDDQ):

(FRN): 0028970382 FCC Grantee Code is: 2AU4D Name of U.S. agent contact person: Sam Liang Company U.S. agent:X-SENSE USA LLC Physical U.S. address of agent: 1209 Orange St, Wilmington, DE 19801, USA FRN of U.S. agent: 0035191709 Email address of U.S. agent: [email protected] Phone of U.S. agent: +1 (833) 952-1880 X-SENSE USA LLC acknowledges their obligation to accept service of process on behalf of

[X-Sense Innovations Co., Ltd.].

[X-Sense Innovations Co., Ltd.] accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under 2.911(d)(7).

Applicant Signed Agent Signed (if different to Applicant)

Signed:

Signed:

Printed name: Sam Liang Title: Compliance Officer Company Name: X-Sense Innovations Co., Ltd. Date:

7/30/2026 Printed name: Sam Liang Title: Compliance Officer Company Name: X-SENSE USA LLC Date:

7/30/2026 The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC 3 0 V

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