FCC ID: 2BAO4-ST800 Transmitter

ST- 800 User manual The Call button ST-800 is a transmitter. It transmits RF signals to receiver in order to communicate wirelessly. First, user should register call button to receiver. And then press the call button to send signals to the receiver and the receiver shows its caller ID. For example, in the restaurant, customer can let server know when they need service by press pre-registered call button on the table.

<Operational Description>

Syscall Receiver (SR-A330) ST-800 Transmitter 1. Register a transmitter through the receiver. 2. Press the button, the signal will be sent to the receiver. Specification Model Frequency Frequency tolerance RF Power Modulation Battery Current drain ST-800(Transmitter) 433.420MHz

+/- 2.0KHz 10mW FSK CR2025 - Coin Battery 3V (1 Cell) Below 30mA FCC Information to User 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 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 con-nected. Consult the dealer or an experienced radio/TV technician for help. Caution Modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. FCC Compliance Information : 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. CAUTION : Exposure to Radio Frequency Radiation. Antenna shall be mounted in such a manner to minimize the potential for human contact during normal operation. The antenna should not be contacted during operation to avoid the possibility of exceeding the FCC radio frequency exposure limit.

Page 1 of 1 IDENTIFICATION LABEL:

PROPOSED LABEL The shall be permanently affixed in the rear side of the equipment

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a[_ 3.000] to12| 385] 569] 13600] 19500[ 1708] 1264] sooo] tea) 04s -S70)-1a800] 1.76) 1036 -Saa|-ranoa| 3843

|_sa000] asa -t003| Sat] 19600] 19600] t713| 1266) sono] 1700) tos7| -Sa2)-ta800] a1a7] 104s -s98|-ran00| 3898 G|_ 5000] s7e| tori] 52] 13600] 1e600] t7t4| 13.18) st8.00] s0a.00), 08a] -Saa)-1a800/ 24a 1054 -81a|-ranoa| ars 746.000] s63|_ 10.47] 582] 19600] 19500] 1708] 1311] sono] 11806) oes] -S94)-ta800/ 4200) 10ei| -8t6|-ranoa| 382 a|_ssro00] sa7| 1024] Sat] 13600] 1e000] -1715| 13.33] son00] sea.00) oral -ss1|-tas00] ata) 1088 -8a5|-ran00| 3899 a|_sa000] 223[ 1052] 604] 13600] 1e000] -t7t5| 136) 20500] 11075) oe1| -804[-13800] 1.62) oval -Saa|-ranoa| a5 to/ a39.000] o11[ taaal 612) 13500] reac) 1703 ta2a| sonoal ti7sa) 1080] -612|-ta500 ater] 10.80] -65i[-t2000| ena Graph Option H-Cut (8=90) E1-Cut (@=0) E2-Cut (=90) cn Gain [abi] Ys 108i] me Gain [483] "

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~ Plot Data Polarization To) Frequency

[MHz]

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Nttworks Co., Ltd Section 2.911(d)(5)(i) Certification Equipment Type Company name: Nttworks Co., Ltd Address: 5-10, Nttworks Bldg. Tongil-ro 89-gil, Eunpyeong-gu, Seoul, 03328, South Korea Product Name: Transmitter FCC ID: 2BAO4-ST800 Model(s): ST-800 2.911(d)(5)(i) Equipment Type We, [Nttworks Co., Ltd] (the applicant) certify that the equipment for which authorization is sought through certification is not:

Prohibited from receiving an equipment authorization pursuant to 2.903; of the FCC rules. Identified as an equipment type in the Covered List NOTE 1 Yours sincerely, Name: Hanbyul, Ryu Date: April 19, 2023 Title and Company name: Manager / Nttworks Co., Ltd NOTE 1 Covered List; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References;

1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the 2.911 (d)(5)(i) Equipment Type Attestation v1.2

Nttworks Co., Ltd Section 2.911(d)(5)(ii) Certification Applicant (Covered List

) Company name: Nttworks Co., Ltd Address: 5-10, Nttworks Bldg. Tongil-ro 89-gil, Eunpyeong-gu, Seoul, 03328, South Korea Product Name: Transmitter FCC ID: 2BAO4-ST800 Model(s): ST-800 2.911(d)(5)(ii) Applicant filing We, [Nttworks Co., Ltd] (the applicant) certify that, as of the date of the filing of the application, the applicant is is not identified NOTE 1 on the Covered List NOTE 2, established pursuant to 1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Name: Hanbyul, Ryu Date: April 19, 2023 Title and Company name: Manager / Nttworks Co., Ltd NOTE 1 Delete option not applicable to this application. NOTE 2 Covered List; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References;

1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the 2.911 (d)(5)(ii) Applicant Attestation v1.3

Nttworks Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject; Request for Confidentiality FCC ID: 2BAO4-ST800 Date: April 19, 2023 To Whom It May Concern, Pursuant to the provisions of the Commissions 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 In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. 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, Name: Hanbyul, Ryu Title: Manager

Letter of Authorization Company

: Nttworks Co., Ltd Address

: 5-10, Nttworks Bldg. Tongil-ro 89-gil, Eunpyeong-gu, Seoul, 03328, South Korea Product Name

: Transmitter Model Number

: ST-800 FCC Identifier

: 2BAO4-ST800 We authorize MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the above named equipment. Any individual within MiCOM Labs is authorized to act on our behalf and take action on the application. We declare that MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, is allowed to forward all 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 MiCOM Labs on our behalf shall have the same effect as acts of our own. Name: Hanbyul, Ryu Date: April 19, 2023 Title: Manager Signature of applicant:

Nttworks Co., Ltd 5-10, Nttworks Bldg. Tongil-ro 89-gil, Eunpyeong-gu Seoul, 03328 South Korea Date: April 24, 2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2BAO4-ST800 US Agent Attestation Statement / Part 2.911(d)(7) Nttworks Co., Ltd certifies, that as of April 24, 2023, we have designated FCC US Agent, LLC to accept service of process on our behalf for FCC ID: 2BAO4-ST800 Nttworks Co., Ltd, accepts to maintain an agent of 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. FCC US Agent, LLC, accepts as of the date of the filing of this application, the obligation of being the designated agent for the purpose of accepting service of process on behalf of Nttworks Co., Ltd for FCC ID: 2BAO4-ST800 Designated Agent Information:

Company Name: FCC US Agent, LLC FRN: 0033402884 Address: 3722 Illinois Avenue, Saint Charles, IL, 60174, USA Contact Person: Tim Payne Phone: 708-571-3148 Email: Support@FCCUSAgent.com Sincerely, Company: Nttworks Co., Ltd Designated Agent: FCC US Agent, LLC Company Representative: Hanbyul, Ryu Designated Agent Representative: Tim Payne Signature:

Signature: