FCC ID: 2A3XA-F011 Ultrasonic tooth cleaner

Soft Comfort Strong 1 3 FCC Warning Statement: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. 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 instructions, 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:

- Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help. This device complies with 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. FCC Radiation Exposure Statement The antennas used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be colocated for operating in conjunction with any other antenna or transmitter.

< Shenzhen Caisu Technology Co., Ltd >

Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Subject: Request for Confidentiality FCC ID:2A3XA-F011 To Whom It May Concern, C5266091_X10_Ed.1 Date: 2022-08-05 Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules

(47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits ID Label/Location Attestation Statement External Photos Block Diagram Schematics Test Report Test Setup Photos Users Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) SDR Software / Security Info Long-Term Confidentiality No No No Short-Term Confidentiality No No No No No No No No Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name: Zhenwei Gao Title: N/A 1/1

Shenzhen Caisu Technology Co., Ltd Model Difference Product description: Ultrasonic tooth cleaner Model name: F011 F012,F013,F014,F015,G011,G012,G013,G014,G015 Trade Name: N/A FCC ID:2A3XA-F011 All the model are the same circuit and RF module, only for model name. Regards Sincerely Clients signature:

Clients name / title : Zhenwei Gao (N/A) Contact information / address: Second Floor, Building B, New Era Gongrong Industrial Park, No. 2, Shihuan Road, Bao 'an District, Shenzhen, China

C5266091_X8_Ed.1 Letter of Authorization

<Shenzhen Caisu Technology Co., Ltd >

Company:Shenzhen Caisu Technology Co., Ltd Address: Second Floor, Building B, New Era Gongrong Industrial Park, No. 2, Shihuan Road, Bao 'an District, Shenzhen, China Product Name: Ultrasonic tooth cleaner Model Number:F011 F012,F013,F014,F015,G011,G012,G013,G014,G015 FCC Identifier:2A3XA-F011 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. is allowed to forward all Name: Zhenwei Gao Date: 2022-08-05 Title: N/A Signature of applicant:

1/1