FCC ID: 2A9SE-CG4CHTX433 Transmitter

KL-CG4CHTX433 Transmitters specification 1. Parameter 1) Operating voltageDC3.0VDC15.5V 2) Electric current15mA max 3) Operating frequency433.92MHZ 4) ModulationASK 5) Encoding typerolling codeHCS301 6) Temperature-4070 7 )Size 44*12.7*1.0mm 2. Pins and functions Pins 1 GND 2 VCC 3 LED 4 D0 5 D1 6 D2 7 D3 8 ANT1 FCC Caution:

Functions Negative pole of power Positive pole of power LED Data input (High level trigger) Data input (High level trigger) Data input (High level trigger) Data input (High level trigger) Antenna socket U.FL 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. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 FCCs RF Exposure guidelines, This equipment should be installed and operated with minimum distance between 20cm the radiator your body: Use only the supplied antenna.

Page 1 of 1 FCC ID: 2A9SE-CG4CHTX433 LABEL AND LOCATION Transmitter Model: KL-CG4CHTX433 FCC ID: 2A9SE-CG4CHTX433

(Size: L0.5cm x 0.5cm) Label Location Shenzhen LCS Compliance Testing Laboratory Ltd. Add: 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Yabianxueziwei, Shajing Street, Baoan District, Shenzhen, 518000, China Tel: +(86) 0755-82591330 | E-mail: webmaster@lcs-cert.com | Web: www.lcs-cert.com Scan code to check authenticity

Shenzhen Kelvin Electronics Co,. Ltd 4/F, 23/B, Lianchuang Technology Park, Bulan Road Nanwan Street, Longgang District Shenzhen China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2023-4-12 To whom it may concer:

We, Shenzhen Kelvin Electronics Co,. Ltd , hereby certify that the equipment for which authorization is sought (FCC ID: 2A9SE-CG4CHTX433) is not covered equipment prohibited from receiving an equipment authorization pursuant to 2.903 of the FCC rules. We also certify that, as of the date of the filing of the application, we are not identified on the Covered List (httos://www foc. gov/supplychain/coveredlist) as an entity producing covered equipment. By signing this form, we confirm the above and that we are aware of the application requirements listed under 2.911(b) and ()(5) and (6). Sincerely, Dino Pony Signature Pang Diana Sales Manager 3 Shenzhen Kelvin Electronics Co,. Ltd The information provided inthis eter is based on the referenced rle parts of Tile 47 of the CFR as well as KDB 986446 DOI.

Sincerely, Name/Title Pang Diana/Sales Manager Company:

Address:

Shenzhen Kelvin Electronics Co,. Ltd 4/F, 23/B, Lianchuang Technology Park, Bulan Road Nanwan Street, Longgang District Shenzhen China 18878479860

sales2@cnkelvin.com Phone:

Fax:

E-Mail:

Shenzhen Kelvin Electronics Co, Ltd 4/F, 23/B, Lianchuang Technology Park, Bulan Road Nanwan Street, Longgang District Shenzhen China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2023-4-12 To whom it may concer:

We, the undersigned, hereby authorize Eurofins Product Service GmbH to acton our behaffin all matters relating to applications for equipment authorization FCC ID: 2A9SE-CG4CHTX433 including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. By signing this application form, we agree to Eurofins current valid General Terms and Conditions

(AGB),Testing and Certification Regulations (PZO) which can be viewed on following website www.eurofins de/ee or retrieved on request. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely,

Diono Pony Name/Title: Pang Diana/Sales Manager Shenzhen Kelvin Electronics Co,. Ltd 4/F, 23/B, Lianchuang Technology Park, Bulan Road Nanwan Street, Longgang District Shenzhen China Phone: 18878479860 Fax: /

E-Mail: sales2@cnkelvin.com

- Shenzhen Kelvin Electronics Co,. Ltd -

Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 U.S. Agent Designation 4/11/2023 Shenzhen Kelvin Electronics Co,. Ltd acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID:2A9SE-CG4CHTX433):

Name of U.S. agent: Tim Payne Company U.S. agent: FCC US Agent, LLC Physical U.S. address of agent: 3722 Illinois Avenue, Saint Charles, IL, 60174, USA FRN of U.S. agent: 0033402884 Email address of U.S. agent: Support@FCCUSAgent.com Phone of U.S. agent: 708-571-3148 FCC US Agent, LLC acknowledges their obligation to accept service of process on behalf of Shenzhen Kelvin Electronics Co,. Ltd. Shenzhen Kelvin Electronics Co,. Ltd accepts its obligation 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. By signing this form, we confirm the above and that we are aware of the application requirements listed under 2.911(d)(7). Sincerely, Signature Pang Diana Sales Manager Shenzhen Kelvin Electronics Co,. Ltd Signature Tim Payne Manager FCC US Agent, LLC The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC. 3 0 V

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