2A789SC060Smart Battery Doorbell

(Insert company letter head) Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject: Certification designating a U.S. agent for service of process pursuant to Part 2.911(d)(7) To whom it may concern, [Ningbo Lingzhu Technology CO., Ltd., 2A789, 0032739252] (“the applicant”) certifies that, as of the date of the filing of application, [Tuya Global Inc.] (“the agent”) is designated as the U.S. agent for the purpose of accepting service of process on behalf of the applicant. The physical U.S. address, email for the designated agent are: Physical U.S. address: [3979 Freedom Circle, Suite 340, Santa Clara, CA 95054, USA] Email: [[email protected]] FRN: 0033411059 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 agent accepts the designation by (the applicant) as the U.S. agent to accept service of process includes, but is not limited to, delivery of any correspondence, notices, orders, decisions, and requirements of administrative, legal, or judicial process related to Commission proceedings. Signed by the Applicant Signed by the Agent (if different from the Applicant) Name: Linyun Li Name: Eric Shen Title: Manager Title: Manager Email: [email protected] Email: [email protected] Date: 13-7-2023 Date:13-7-2023

Ningbo Lingzhu Technology CO., Ltd. Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Date: July 13, 2023 Subject: Certifications concerning “covered” equipment pursuant to Part 2.911(d)(5)(i) and (ii) To whom it may concern, Ningbo Lingzhu Technology CO., Ltd. certifies that the equipment FCC ID: 2A789SC060 for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Ningbo Lingzhu Technology 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, ________________________ Name: Linyun Li E-mail: [email protected]

Model Difference Statement We, (Ningbo Lingzhu Technology CO., Ltd.) certify the Product Description: Smart Battery Doorbell FCC ID: 2A789SC060 Model No.: SC060-WCB2, SC060-WCB2A, SC060-WCB2B, SC060-WCB2C SC060-WCB3, SC060-WCB3A, SC060-WCB3B, SC060-WCB3C SC060-WCB4, SC060-WCB4A, SC060-WCB4B, SC060-WCB4C We hereby declare: SC060-WCB2, SC060-WCB2A, SC060-WCB2B, SC060-WCB2C SC060-WCB3, SC060-WCB3A, SC060-WCB3B, SC060-WCB3C SC060-WCB4, SC060-WCB4A, SC060-WCB4B, SC060-WCB4C are identical to each other, except for different model name, sensor, color and tiny enclosure difference, such as different chamfering. These differences are not related to the radio frequency function. 2, 3, 4 in model name for different image sensor and A, B, C in model name for different color and tiny enclosure difference. Sincerely, Signature: Contact Person: Li Linyun Date: 2023 - 04 - 23

Ningbo Lingzhu Technology CO., Ltd. Date: July 13, 2023 Power of Attorney To whom it may concern, Please be notified that I, Linyun Li, have designated Jim Tsai in Sporton International Inc. as the person being responsible for this project and to sign the form 731 and other documentation. Any and all acts carried out by Jim Tsai in Sporton International Inc., on the matters of relating to all processes required in the FCC approval and any communication needed with the national authority, shall have the same legal authority as acts on our own behalf. We further certifies that neither the applicant nor any party to this application, as defined in 47 CFR Ch. 1.2002 (b), is subject to a denial to Federal benefits, that include FCC benefits, pursuant to section 5301 of the Anti-Drug Abuse Act of 1998, 21 U.S.C. 835(a). This authorization is limited to the product of as following: FCC ID: 2A789SC060 If you have any acknowledgement and response, please send it to Sporton International Inc. directly. Should you have any questions or comments regarding this matter, please have my best attention. Sincerely yours, Contact Person: Linyun Li E-mail: [email protected]

Ningbo Lingzhu Technology CO., Ltd. Date: July 13, 2023 Federal Communications Commission Office of Engineering and Technology Laboratory Division 7435 Oakland Mills Rd Columbia MD 21046-1609 Subject: Request for Confidentiality FCC ID: 2A789SC060 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission’s rules (47CFR§§0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure indefinitely.  Schematic Diagram  Block Diagram  Operational Description  Tune-up Procedure 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. In additional to above mentioned documents, pursuant to Public Notice DA 04-1705 of the Commission’ s policy, in order to comply with the marketing regulations in 47 CFT §2.803 and the importation rules in 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices. We are requesting the commission to grant short-term confidentiality request on the following attachment(s) for 180 days after the grant as outlined in Public Notice DA 04-1705.  External Photos  Internal Photos  Test Setup Photos  User Manual 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. Best Regards, ______________________ Contact Person: Linyun Li E-mail: [email protected]

Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 1 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 720510 1. External Photograph of EUT Doorbell Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 2 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 3 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 4 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 5 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 6 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 7 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Dingdong machine Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 8 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 9 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 10 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 11 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 12 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 13 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 List of Accessory: Specification of Accessory Battery Brand Name Shenzhen RTD Technology Co., Ltd Model Name NA USB Cable Brand Name NA Model Name NA Remark: For accessories equipped with this EUT, please refer to the following photos. 2. Photograph of Accessory Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 14 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 720510 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 15 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Battery Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 16 of 51 TEL : 86-0512-5790-0158 Report Issued Date :…

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SN: ZR118061234567 MAC: AA:BB:CC:DD:EE:FF Smart Battery Doorbell ModelSC060-WCB2 Input5V 1A FCCID:2A789SC060 Ningbo Lingzhu Technology CO., Ltd.

Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 18 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 720510 3. Internal Photograph of EUT Doorbell Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 19 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 WIFI TX/RX Antenna Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 20 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 21 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 22 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 23 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 24 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 25 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 26 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 27 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 28 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 29 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 30 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 31 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 32 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton International Inc. (Kunshan) Page Number : 33 of 51 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 01, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 Photographs of EUT Report No.: EP342506 Model Name: SC060-WCB2,SC060-WCB2A,SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A,SC060-WCB3B,SC060-WCB3C SC060-WCB4,SC060-WCB4A,SC060-WCB4B,SC060-WCB4C Sporton Inter…

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Sporton International Inc. (Kunshan) Page Number : 1 of 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 31, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA342506 RF Exposure Evaluation Report APPLICANT : Ningbo Lingzhu Technology CO., Ltd. EQUIPMENT : Smart Battery Doorbell MODEL NAME : SC060-WCB2,SC060-WCB2A, SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A, SC060-WCB3B,SC060-WCB3C, SC060-WCB4,SC060-WCB4A, SC060-WCB4B,SC060-WCB4C FCC ID : 2A789SC060 STANDARD : 47 CFR Part 2.1091 The product evaluation date was started from Jul. 14, 2023 and completed on Jul. 14, 2023. We, Sporton International Inc. (Kunshan), would like to declare that the device has been evaluated in accordance with 47 CFR Part 2.1091 and FCC KDB 447498 D01 v06, and pass the limit. Without written approval of Sporton International Inc. (Kunshan), the test report shall not be reproduced except in full. Approved by: Si Zhang Sporton International Inc. (Kunshan) No. 1098, Pengxi North Road, Kunshan Economic Development Zone Jiangsu Province 215300 People’s Republic of China Sporton International Inc. (Kunshan) Page Number : 2 of 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 31, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA342506 Table of Contents 1. ADMINISTRATION DATA ........................................................................................................................... 4 1.1. Testing Laboratory ............................................................................................................................. 4 2. DESCRIPTION OF EQUIPMENT UNDER TEST (EUT) ............................................................................. 5 3. MAXIMUM RF AVERAGE OUTPUT TUNE UP POWER AMONG PRODUCTION UNITS ....................... 6 4. RF EXPOSURE LIMIT INTRODUCTION .................................................................................................... 7 5. RADIO FREQUENCY RADIATION EXPOSURE EVALUATION ............................................................... 8 5.1. Standalone Power Density Calculation ............................................................................................. 8 Sporton International Inc. (Kunshan) Page Number : 3 of 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 31, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA342506 Revision History REPORT NO. VERSION DESCRIPTION ISSUED DATE FA342506 Rev. 01 Initial issue of report. Jul. 31, 2023 Sporton International Inc. (Kunshan) Page Number : 4 of 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 31, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA342506 1. Administration Data 1.1. Testing Laboratory Sporton International Inc. (Kunshan) is accredited to ISO/IEC 17025:2017 by American Association for Laboratory Accreditation with Certificate Number 5145.02. Testing Laboratory Test Firm Sporton International Inc. (Kunshan) Test Site Location No. 1098, Pengxi North Road, Kunshan Economic Development Zone Jiangsu Province 215300 People’s Republic of China TEL : +86-512-57900158 FAX : +86-512-57900958 Test Site No. Sporton Site No. FCC Designation No. FCC Test Firm Registration No. SAR01-KS CN1257 314309 Applicant Company Name Ningbo Lingzhu Technology CO., Ltd. Address No.578, Building 7, No.535 Kangqiao South Road, Jiangbei District, Ningbo, Zhejiang, PRC Manufacturer Company Name Ningbo Lingzhu Technology CO., Ltd. Address No.578, Building 7, No.535 Kangqiao South Road, Jiangbei District, Ningbo, Zhejiang, PRC Sporton International Inc. (Kunshan) Page Number : 5 of 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 31, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA342506 2. Description of Equipment Under Test (EUT) Product Feature & Specification EUT Type Smart Battery Doorbell Model Name SC060-WCB2,SC060-WCB2A, SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A, SC060-WCB3B,SC060-WCB3C, SC060-WCB4,SC060-WCB4A, SC060-WCB4B,SC060-WCB4C FCC ID 2A789SC060 Wireless Technology and Frequency Range WLAN 2.4GHz Band: 2412 MHz ~ 2462 MHz 433MHz Mode WLAN 2.4GHz 802.11b/g/n HT20 433MHz: ASK Antenna Gain WLAN2.4GHz: 3.79 dBi 433MHz: -10.36 dBi Antenna Type WLAN: FPC Antenna 433MHz: Spring Antenna EUT Stage Identical Prototype Remark: The above EUT's information was declared by manufacturer. Please refer to the specifications or user's manual for more detailed description. Comments and Explanations: 1. The declared of product specification for EUT presented in the report are provided by the manufacturer, and the manufacturer takes all the responsibilities for the accuracy of product specification. 2. The maximum RF output tune up power, antenna gain also the safe distance used for evaluate RF exposure were declared by manufacturer. Sporton International Inc. (Kunshan) Page Number : 6 of 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 31, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA342506 3. Maximum RF average output tune up power among production units <2.4GHz WLAN > Mode Maximum Average Power (dBm) 2.4GHz 802.11b 14.00 802.11g 13.00 802.11n-HT20 12.00 <433MHz > Mode Maximum Average Power (dBm) 433MHz 7.00 Sporton International Inc. (Kunshan) Page Number : 7 of 8 TEL : 86-512-57900158 / FAX : 86-512-57900958 Report Issued Date : Jul. 31, 2023 FCC ID : 2A789SC060 Report Version : Rev. 01 RF Exposure Evaluation Report Report No. : FA342506 4. RF Exposure Limit Introduction According to ANSI/IEEE C95.1-1992, the criteria listed in Table 1 shall be used to evaluate the environmental impact of human exposure to radio frequency (RF) radiation as specified in §1.1310. The MPE was calculated a…

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Sporton International Inc.(Kunshan) Page Number : 1 of 23 TEL : +86-512-57900158 Report Issued Date : Jul. 31, 2023 FCC ID: 2A789SC060 Report Version : Rev. 01 Report Template No.: BU5-FR15CWL AC MA Version 2.0 FCC RF Test Report Report No. : FR342506A FCC RF Test Report APPLICANT : Ningbo Lingzhu Technology CO., Ltd. EQUIPMENT : Smart Battery Doorbell MODEL NAME : SC060-WCB2,SC060-WCB2A, SC060-WCB2B,SC060-WCB2C, SC060-WCB3,SC060-WCB3A, SC060-WCB3B,SC060-WCB3C, SC060-WCB4,SC060-WCB4A, SC060-WCB4B,SC060-WCB4C FCC ID : 2A789SC060 STANDARD : FCC Part 15 Subpart C §15.247 CLASSIFICATION : (DTS) Digital Transmission System TEST DATE(S) : May 18, 2023 ~ Jul. 14, 2023 We, Sporton International Inc. (Kunshan), would like to declare that the tested sample has been evaluated in accordance with the test procedures and has been in compliance with the applicable technical standards. The test results in this report apply exclusively to the tested model / sample. Without written approval of Sporton International Inc. (Kunshan), the test report shall not be reproduced except in full. Approved by: Jason Jia Sporton International Inc. (Kunshan) No. 1098, Pengxi North Road, Kunshan Economic Development Zone Jiangsu Province 215300 People’s Republic of China Sporton International Inc.(Kunshan) Page Number : 2 of 23 TEL : +86-512-57900158 Report Issued Date : Jul. 31, 2023 FCC ID: 2A789SC060 Report Version : Rev. 01 Report Template No.: BU5-FR15CWL AC MA Version 2.0 FCC RF Test Report Report No. : FR342506A TABLE OF CONTENTS REVISION HISTORY .......................................................................................................................................... 3 SUMMARY OF TEST RESULT ......................................................................................................................... 4 1 GENERAL DESCRIPTION .......................................................................................................................... 5 1.1 Applicant ............................................................................................................................................ 5 1.2 Manufacturer ...................................................................................................................................... 5 1.3 Product Feature of Equipment Under Test ........................................................................................ 5 1.4 Product Specification of Equipment Under Test ................................................................................ 5 1.5 Modification of EUT ........................................................................................................................... 5 1.6 Testing Location ................................................................................................................................ 6 1.7 Test Software ..................................................................................................................................... 6 1.8 Applicable Standards ......................................................................................................................... 6 2 TEST CONFIGURATION OF EQUIPMENT UNDER TEST ........................................................................ 7 2.1 Carrier Frequency and Channel ........................................................................................................ 7 2.2 Test Mode .......................................................................................................................................... 7 2.3 Connection Diagram of Test System ................................................................................................. 8 2.4 Support Unit used in test configuration and system .......................................................................... 9 2.5 EUT Operation Test Setup ................................................................................................................ 9 2.6 Measurement Results Explanation Example ..................................................................................... 9 3 TEST RESULT ........................................................................................................................................... 10 3.1 6dB and 99% Bandwidth Measurement .......................................................................................... 10 3.2 Output Power Measurement ............................................................................................................ 11 3.3 Power Spectral Density Measurement ............................................................................................ 13 3.4 Conducted Band Edges and Spurious Emission Measurement ..................................................... 14 3.5 Radiated Band Edges and Spurious Emission Measurement ........................................................ 15 3.6 AC Conducted Emission Measurement........................................................................................... 19 3.7 Antenna Requirements .................................................................................................................... 21 4 LIST OF MEASURING EQUIPMENT ........................................................................................................ 22 5 MEASUREMENT UNCERTAINTY ............................................................................................................ 23 APPENDIX A. CONDUCTED TEST RESULTS APPENDIX B. AC CONDU…

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