FCC ID: 2A3SYMBL01 WiFi Module

2A3SYMBL01 is a low-power embedded Wi-Fi module developed by Dongguan Techway Technology Co., Ltd. It consists of a It is composed of a highly integrated radio frequency chip BL2028N and a small number of peripheral devices, with a built-in Wi-Fi network protocol stack and Rich library functions. 2A3SYMBL01 Can support AP and STA dual-role connection, and support Bluetooth low energy connection at the same time. A 32-bit MCU with a maximum operating speed of 120 MHz, built-in 2Mbyte flash memory and 256 KB RAM, and 3 channels of 32-bit PWM output is very suitable for high-quality smart home control. Model: WiFi Module Model: 2A3SYMBL01 Input Voltage: 3V~3.6V Power: 210mA Product Picture as below End Product Labeling MBL01 has been labeled with its own FCC ID. The end product manufacturer must ensure that FCC labeling requirements are met. If the FCC ID of 2A3SYMBL01 is not visible when the module is installed inside another device, then the device must have a clearly visible label containing the following information:

Contains FCC ID: 2A3SYMBL01 Note 1: This module certified that complies with RF exposure requirement under mobile or fixed condition, this module is to be installed only in mobile or fixed applications. A separate approval is required for all other operating configurations, including portable configurations with respect to Part 2.1093 and difference antenna configurations. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Note 2: Any modifications made to the module will void the Grant of Certification, this module is limited to OEM installation only and must not be sold to end-users, end-user has no manual instructions to remove or install the device, only software or operating procedure shall be placed in the end-user operating manual of final products. Note 3:Additional testing and certification may be necessary when multiple modules are used. Note 4: The module may be operated only with the antenna with which it is authorized. Any antenna that is of the same type and of equal or less directional gain as an antenna that is authorized with the intentional radiator may be marketed with, and used with, that intentional radiator. This product must be professionally installed to ensure that no antenna other than that furnished by the responsible party shall be used with the device Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment. 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. Note: 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. To maintain compliance with FCC's RF exposure guidelines, the distance must be at least 20cm between the radiator and your body, and fully supported by the operating and installation configurations of the transmitter and its antenna(s).

Reference No.: WTX23X07151824W Page 1 of 7 ANNEX EXHIBIT 1 - PRODUCT LABELING Proposed FCC ID Label Format FCC ID: 2A3SYMBL01 Specifications: The label shall be securely affixed to a permanently attached part of the device, in a location where it is visible or easily accessible to the user, and shall not be readily detachable. The label shall be sufficiently durable to remain fully legible and intact on the device in all normal conditions of use throughout the devices expected lifetime. Proposed Label Location on EUT FCC ID Label Location Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn

Hesung Innovation Limited Room 803, Chevalier House, 45-51 Chatham Road South, Tsim Sha Tsui, Kowloon, Hong Kong 999077, Date: 2023-08-16 FEDERAL COMMUNICATIONS COMMISSION AUTHORIZATION AND EVALUATION DIVISION 7435 OAKLAND MILLS ROAD COLUMBIA, MD 21046 USA Ref: Attestation Statements Part 2.911(d) (7) Filing Grantee Code: 2A3SY Applicant FRN: 0031685647 Hesung Innovation Limited certifies that, as of the date of the filing of the application, Cleveland International Trade Agency is our designated U.S. agent for service of process for the above referenced Grantee Code. Hesung Innovation Limited accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Cleveland International Trade Agency accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced Grantee Code. Designated U.S. Agent Information:

Name: Cleveland International Trade Agency U.S. Agent FRN: 0033401837 Address: 4033 St Clair Ave, Cleveland, OH 44103, USA Contact Person: Becky Deng Tel.: (216) 600-0606 Email: Georgewu7012@gmail.com Sincerely, Signed on behalf of Hesung Innovation Limited | Signed on behalf of Cleveland International Trade Agency signature signature mere Per Young Name: Bera Yang Name: Becky Deng Title: Manager Title: Manager Date: 2023-08-16 Date: 2023-08-16

Hesung Innovation Limited Date: 2023-10-19 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d) (5) (i) Filing SUBJECT: FCC Application for FCC ID: 2A3SYMBLO1 To Whom It May Concern:

Hesung Innovation Limited 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. Sincerely, Signatory pers share 5

[Bera Yang, Poject Manager

Hesung Innovation Limited Date: 2023-10-19 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Ref: Attestation Statements Part 2.911(d) (5) (ii) Filing SUBJECT: FCC Application for FCC ID: 2A3SYMBLO1 To Whom It May Concern:

Hesung Innovation Limited 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, Y. Signatory bee (r~S

[Bera Yang, Poject Manager]

Hesung Innovation Limited Room 803, Chevalier House, 45-51 Chatham Road South, Tsim Sha Tsui, Kowloon, Hong Kong 999077, China Date: 2023-10-19 FEDERAL COMMUNICATIONS COMMISSION AUTHORIZATION AND EVALUATION DIVISION 7435 OAKLAND MILLS ROAD COLUMBIA, MD 21046 FCC Class Il Permissive Change Application Letter To Whom It May Concern:

This is to request a Class II permissive change, the following the original equipment:

Product name: WiFi Module FCC ID: 2A3SYMBLO01 Date of Grant: 12/15/2021 Model No.: MBLO1 Change Contents:

Location Old equipment of FCC ID: 2A3SYMBL02 New equipment of FCC ID: 2A3SYMBLO2 Antenna Added five antennas that can be selected. Modifications that do not change the fundamental RF characteristics and that do not degrade the unwanted emissions of the certified product, please refer to test report for more details;

Modifications that do not change physical characteristics. We attach new photographs to identify the modified product. Sincerely, Signatory Berm iM ws .

[Bera Yang, Poject Manager]

Hesung Innovation Limited Date: 2023-10-19 FEDERAL COMMUNICATIONS COMMISSION AUTHORIZATION AND EVALUATION DIVISION 7435 OAKLAND MILLS ROAD COLUMBIA, MD 21046 SUBJECT: FCC Application for FCC ID: 2A3SYMBLO01 MODULAR APPROVAL LETTER Regarding to the FCC 15.212, Hesung Innovation Limited would like to request modular approval for the submission FCC ID: 2A3SYMBLO2. Hesung Innovation Limited confirms that the product complies with numbered requirements identified below:

1. The modular transmitter must have its own RF Shielding This EUT has its own shielding, please refers to external photos of the report. The modular transmitter must have buffered modulation/data inputs The EUT has buffered data inputs; it is integrated in chip BL2028N. 2. The modular transmitter must have its own power supply regulation The EUT interface provides 3.3VDC, and has its own VCC inside. 3. The modular transmitter must comply with the antenna and transmission system requirements of Sections 15.203, 15.204(b) and 15.204(c) The EUT meets the antenna requirements. It has an Integral antenna. Refer to the photo of antennas are shown in the internal photos. 4. The modular transmitter must be tested in a stand-alone configuration. The EUT is tested in an access point configuration via DC power. 5. The modular transmitter must be labeled with its own FCC ID number. The EUT has its own FCC ID and the label is visible. 6. The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacture must provide adequate instructions along with module to explain any such requirement. The EUT comply with all applicable FCC Rules. Warning detail refer to the user manual. 7. The modular transmitter must comply with any applicable RF exposure requirements. The EUT comply with all applicable RF exposure requirements. See this RF exposure report. Sincerely, Signatory pei fn

[Bera Yang, Poject Manag

=Hesung Innovation Limited Room 803, Chevalier House, 45-51 Chatham Road South, Tsim Sha Tsui, Kowloon, Hong Kong 999077, China Date: 2023-10-19 FEDERAL COMMUNICATIONS COMMISSION AUTHORIZATION AND EVALUATION DIVISION 7435 OAKLAND MILLS ROAD COLUMBIA, MD 21046 SUBJECT: FCC Application for FCC ID: 2A3SYMBLO1 POWER OF ATTORNEY To Whom It May Concern:

We, the undersigned, hereby authorize Waltek Testing Group (Shenzhen) Co., Ltd. Jandy So on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Waltek Testing Group (Shenzhen) Co., Ltd. Jandy So on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, Hesung Innovation Limited are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, Signatory peu. Y :

[Bera Yang, Poject Manage

Hesung Innovation Limited Date:Nov. 29, 2021 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID:2A3SYMBLOI Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, we hereby request confidential treatment of information accompanying this application as outlined below:

Exhibit Type File Name Schematics Schematic.pdf Block Diagram Block Diagram.pdf Operational Description Operation Description.pdf 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. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Hesung Innovation Limited Signature pe Bera Yang/Poject Manager Typed name and Title