2BWHE-RZ-020Remote Control Cold Therapy Machine

       1. This product uses tap water or purified water. Please do not pour other liquids into the ice bucket to avoid damaging the water pump. 1. The product cannot be powered on 2. During use, water tank/water pipe/water bladder was found to be leaking. 3.After use, water is found on the outside of the water tank or at the connection between the water pipe and the ice bucket 4. After turning on the device, it automatically shuts down after a short period of work. It can be used again after restarting, but it still shuts down automatically after a short time. Please charge it first before turning it on for use. If the problem persists, please 5. During use, you can hear the water pump working, with a 'humming' sound, but the water bag is low on water. 6. The machine is operating normally, there is water in the water bladder, but the water is very little and the water pressure is very low. (In addition to considering the operations in question 5, it may be related to the height of the water bag. The water bag of this product cannot operate at a height more than 40 inches above the main unit, and as the height increases, the water flow will gradu- (Please try charging it before turning it on. If it still cannot be turned on, please contact us for assistance.) (Please turn off the device immediately to avoid security issues. Then take photos of the relevant problem and contact us for assistance.) (This is a normal phenomenon. Under cold compress conditions, at the connection between the water pipe and the ice bucket, long-term flow of cold water causes air condensation to form at this spot. The condensate water flows down from the outer wall of the ice bucket or directly from the connection.) (Please check the entire water pipe system as well as the connection points between the water bag and the pipes to see if there are any severe folds, as these may cause poor water flow. If such issues are found, please try to adjust the folded areas. After performing these steps, if the water bag is still lacking water, please contact us for 1. After receiving the product, please fully charge the controller before first use. 2. First, add water to the ice bucket, making sure it completely covers the water pump. 3. Then add ice cubes to the ice bucket. The final amount added should not exceed the maximum water level line in the bucket, or the highest water level of the ice water should be at least 4 inches below the bucket lid. At the same time, please ensure there is plenty of water around the pump that can cover the pump, otherwise it will cause the pump to run dry and damage the pump. 4. Connect the water bladder and the ice bucket. 5. Secure the water bag on your painful area. Please do not tie it too tightly; if the tied area turns purple or feels numb, it means it is tied too tightly and should be loosened accordingly. 6.Press and hold the mechanical button on the top of the controller for 2 seconds to turn on the device. A short press of this button can lock it to prevent accidental opera- tions. Pressing it briefly again can unlock it. The remote control can only be used after the device is turned on. The remote control cannot turn on the device remotely, but it can turn it off remotely. 7. There are three touch buttons on the controller from left to right. They are for setting the duration of a single work session, setting the duration of a single rest session, and setting the flow rate, respectively. 8. Single work duration setting and single rest duration setting combined work: Suppose the single work duration is set to 10 minutes, and the single rest duration is set to 5 minutes. Then the equipment will work for 10 minutes first, then stop to rest for 5 minutes, and then repeat this process. 10. Briefly pressing the water flow setting button can adjust the water flow speed. The higher the flow speed, the lower the temperature you will feel. The default flow speed is level 3 (fastest) when powered on. 9. Regardless of the durations you set for work and rest, the device will shut down completely after running 4 automatic cycles. 11. All of the above operations (except turning on the device) can be performed using the remote control. 2. Prolonged cold compresses may potentially cause harm to the body. If you notice a sharp stinging or prickling pain in the affected area, complete local numbness where even pinching causes little pain, skin turning reddish-purple for a long time after removing the ice, or even small blisters forming, please stop the treatment immediate- ly. In fact, we strongly advise against continuing ice application beyond the system-set duration. 4. Prolonged heat application may cause harm to the body. If you notice that the affected area changes from 'warm' to burning pain, the skin becomes red and hot, continues to burn even after removing the heat source, or experiences itching, tingling, or even slight blistering, please stop the heat application immediately. In fact, we strongly advise against continuing heat application beyond the system-set dura- tion. 3. If you want to use this product for heat therapy, be sure not to add water exceeding 122 into the container, as this can easily cause the water bag to leak.  

Rev 6/05/2026 Shenzhen Ruizhang Industrial Co., Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 06-05-2026 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2BWHE-RZ-020 [Shenzhen Ruizhang Industrial Co., Ltd.] 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. [Shenzhen Ruizhang Industrial Co., Ltd.] certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Device is inherently compliant based on hardware limitations or software controls. or A Software Bill of Materials (SBOM) is provided to the TCB for review, and The end-user or third parties cannot install additional software on this device. Sincerely, (Applicant signature) (Applicant printed name) Lemon feng Rev 6/05/2026 Shenzhen Ruizhang Industrial Co., Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 06-05-2026 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2BWHE-RZ-020 [Shenzhen Ruizhang Industrial Co., Ltd.] 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, (Applicant signature) (Applicant printed name) Lemon feng

Shenzhen Ruizhang Industrial Co., Ltd. U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: June 05, 2026 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: 2BWHE-RZ-020 Shenzhen Ruizhang Industrial Co., Ltd. (“the applicant”) certifies that, as of the date of the filing of the application, CLF Import and Export Limited (“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts 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. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. CLF Import and Export Limited ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name: CLF Import and Export Limited FRN: 0033489683 Address: 1312 17th Street #692, Denver, CO 80202, United States Signature: Contact Person: David Chen Tel: +1 949 254 2565 Email: [email protected] Applicant Company Name: Shenzhen Ruizhang Industrial Co., Ltd. FRN: 0038505418 Address: Pugu Road, Puxin Industrial Zone, Shipai Town, Shenzhen City, China Signature: Contact Person: Lemon feng Tel: 18211307641 Email: [email protected]

Shenzhen Ruizhang Industrial Co., Ltd. Date: June 05, 2026 Product Model Number: RZ-020, RZ-021, RZ-022, RZ-023, RZ-024, RZ-025 FCC ID: 2BWHE-RZ-020 To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following:  Testing  Approval applications and procedures We declare that QAI Laboratories Ltd. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by QAI Laboratories Ltd. on our behalf shall have the same effect as acts of our own. By: Lemon feng Contact Listed on FCC Wesbite Title: Manager Email: [email protected] Telephone: 18211307641 On behalf of: Shenzhen Ruizhang Industrial Co., Ltd.

Shenzhen Ruizhang Industrial Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: June 10, 2026 Subject; Request for Confidentiality FCC ID: 2BWHE-RZ-020 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure Software Security Requirements for UNII devices It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Lemon feng Title: Manager

Shenzhen Ruizhang Industrial Co., Ltd. Model Difference Statement DATE: June 5, 2026 FCC ID: 2BWHE-RZ-020 Dear Sir/Madam, Added models RZ-021, RZ-022, RZ-023, RZ-024, RZ-025 basis of the original product RZ-020. The color of appearance and model name of series models listed are different from the main model, but the circuit and the electronic construction are the same, declared by the manufacturer. Sincerely, Name: Lemon feng Title: Manager Company name: Shenzhen Ruizhang Industrial Co., Ltd. Address: Pugu Road, Puxin Industrial Zone, Shipai Town, Shenzhen City, China

Report No: SSP26050510-1E FCC ID: 2BWHE-RZ-020 Annex of Test Report Annex A. EUT External Photos Model: RZ-020 EUT View 1 EUT View 2 Report No: SSP26050510-1E FCC ID: 2BWHE-RZ-020 Annex of Test Report EUT View 3 EUT View 4 Report No: SSP26050510-1E FCC ID: 2BWHE-RZ-020 Annex of Test Report EUT View 5 EUT View 6 Report No: SSP26050510-1E FCC ID: 2BWHE-RZ-020 Annex of Test Report EUT View 7 EUT View 8

Report No: SSP26050510-1E FCC ID: 2BWHE-RZ-020 Annex of Test Report Annex D. Label and Inf ormation FCC Label Sample FCC Labe Size: 30mm x 4mm FCC Label Specifications Text is Black in color and is justified. Labels are printed in indelible ink on permanent adhesive backing or silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Where the EUT is constructed in two or more sections connected by wires and marketed together, the above statement is required to be affixed only to the main control unit. When the EUT is so small or for such use that it is not practicable to place the statement on it, the above information shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed. FCC Label Location

Report No: SSP26050510-1E FCC ID: 2BWHE-RZ-020 Annex of Test Report Annex B. EUT Internal Photos Model: RZ-020 EUT Internal View 1 EUT Internal View 2 Report No: SSP26050510-1E FCC ID: 2BWHE-RZ-020 Annex of Test Report EUT Internal View 3 PCB antenna

FCC ID: 2BWHE-RZ-020 RF Exposure Evaluation According to KDB 447498 D04 RF Exposure Procedures and Equipment Authorization Policies for Mobile and Portable Devices part 2.1.2, a single RF source is exempt RF device (from the requirement to show data demonstrating compliance to RF exposure limits, as previously mentioned) if the available maximum time-averaged power is no more than 1mW, regardless of separation distance. This exemption applies to all operating configurations and exposure conditions, for the frequency range 100 kHz to 100 GHz, regardless of fixed, mobile, or portable device exposure conditions. This is a standalone exemption, and it cannot be applied in conjunction with any other test exemption. The result is rounded to one decimal place for comparison Here, The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. Frequency (MHz) Power (dBuV/m) Power (dBm) Power (mW) Limit (mW) 433.92 78.63 -16.57 0.02 1 Notes: 78.63dBuV/m-95.2=-16.57dBm 0.02mW＜1mW, so a SAR test is not required.

Report No: SSP26050510-1E FCC Test Report Page 1 of 23 FCC TEST REPORT FCC ID: 2BWHE-RZ-020 Report No. : SSP26050510-1E Applicant : Shenzhen Ruizhang Industrial Co., Ltd. Product Name : Remote Control Cold Therapy Machine Model Name : RZ-020 Test Standard : FCC Part 15.231 Date of Issue : 2026-06-05 Shenzhen CCUT Quality Technology Co., Ltd. 1F, Building 35, Changxing Technology Industrial Park, Yutang Street, Guangming District, Shenzhen, Guangdong, China; (Tel.:+86-755-23406590 website: www.ccuttest.com) This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd. Report No: SSP26050510-1E FCC Test Report Page 2 of 23 Test Report Basic Information Applicant..................................: Shenzhen Ruizhang Industrial Co., Ltd. Address of Applicant...............: Pugu Road, Puxin Industrial Zone, Shipai Town, Shenzhen City, China Manufacturer..........................: Shenzhen Ruizhang Industrial Co., Ltd. Address of Manufacturer........: Pugu Road, Puxin Industrial Zone, Shipai Town, Shenzhen City, China Product Name.........................: Remote Control Cold Therapy Machine Brand Name.............................: - Main Model..............................: RZ-020 Series Models..........................: RZ-021, RZ-022, RZ-023, RZ-024, RZ-025 Test Standard..........................: FCC Part 15 Subpart C ANSI C63.4-2014 ANSI C63.10-2020 + COR.1-2023 Date of Test .............................: 2026-05-29 to 2026-06-04 Test Result...............................: PASS Tested By ................................: (Walker Wu) Reviewed By............................: (Lorzix Luo) Authorized Signatory............: (Lahm Peng) Note : This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd.. All test data presented in this test report is only applicable to presented test sample. Report No: SSP26050510-1E FCC Test Report Page 3 of 23 CONTENTS 1. General Information ....................................................................................................................................................5 1.1 Product Information .............................................................................................................................................5 1.2 Test Setup Information..........................................................................................................................................5 1.3 Compliance Standards ...........................................................................................................................................6 1.4 Test Facilities ........................................................................................................................................................6 1.5 List of Measurement Instruments ..........................................................................................................................7 1.6 Measurement Uncertainty .....................................................................................................................................7 2. Summary of Test Results .............................................................................................................................................8 3. Antenna Requirement .................................................................................................................................................9 3.1 Standard and Limit................................................................................................................................................9 3.2 Test Result ............................................................................................................................................................9 4. Conducted Emissions ................................................................................................................................................ 10 4.1 Standard and Limit.............................................................................................................................................. 10 4.2 Test Procedure.................................................................................................................................................... 10 4.3 Test Data and Results .......................................................................................................................................... 11 5. Radiated Emissions ................................................................................................................................................... 12 5.1 Standard and Limit.............................................................................................................................................. 12 5.2 Test Procedure.................................................................................................................................................... 12 5.3 Test Data and Results .......................................................................................................................................... 14 6. Occupied Bandwidth ................................................................................................................................................. 18 6.1 Standard and Limit.............................................................................................................................................. 18 6.2 Test Procedure.................................................................................................................................................... 18 6.3 Test Data and Results .......................................................................................................................................... 18 7…

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Type of Antenna:：PCB antenna Operating Frequency:：433.92MHZ Project Specification parameter Modle Name PCB-Antenna Center Frequency 433.92MHz 0dBi MAX.GAIN 0 dbi Polarization Linear,Vertical Azimuth Beam Pattern 0mni directional Impedance 80Ω Antenna length and width 240mm*142mm PCB antenna：line width =13mm length =11mm 13mm 11mm Horizontal: 433.92MHz (0dBi) Max: 0 Min: -40 Scale: 5/div Vertical: 433.92MHz (-0.58dBi) Max: 0 Min: -30 Scale: 5/div

Report No: SSP26050510-1E FCC ID: 2BWHE-RZ-020 Annex of Test Report Annex C. Test Photos Radiated Emission Test View 1 Radiated Emission Test View 2