V4P-KB9552.4G receiver

2. 4G receiver Manual Products Profile 1.Compatible with USB1.1/2.0specifications ,supporting USB-IF and WHQL testing 2.16 channel frequency hopping and Strong anti-jamming capability 3.Support 8*18 matrix ,standard 104/107 Keys,support 88 Keysmall keyboard function, Size keyboard sharing receiver 4.Support 18 PCS multimedia keys ,and special function keys,support FN+F1-F12 function. 5.Support battery low alarm,support CAPS LOCK ,NUM LOCK indicator light, LED status and hostsynchronization 6.Built - in maintenance mode ,tofacilitatethe testing and maintenance of defective products 7.Support computer hibernation wake up and wakefromhibernation 8.Wireless remote control distance greaterthan 10 meters 9. Intelligent multi-level power-saving design 10.Support keyboardand mouse combo set Installation Instructions 1. Open you computer 2. The receiver is inserted into the computer to an idle USB interface, 3. the computer will automatically identify the USB device and automatically complete the installation, after the completion of the installation can be used 4. Open the keyboard's battery cover, right into the battery, keyboard and receiver connections use Th is 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. (2)This device must accept any interference received, including interference that may cause undesired operation. 2 . 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 frequence energy and,if not installed and used in accordance with the instructions,may cause harmful interference to radio communications.However,there is no g uarantee that interference will not occur in a particular installation.if this equipmemt 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: • Reo rient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Co nnect the equipment into an autlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. Th e device has been evaluated to meet general RF exposure requirement. The devicecan be used in portable exposure condition without restriction.

Dongguan Newmen Electronics Technology Co., Ltd 2022-12-02 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize DongGuan Anci Electronic Technology Co., Ltd. to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Geroge He Manager Dongguan Newmen Electronics Technology Co., Ltd No.5, Xifa Road, Lin Village, Tangxia Town, Dongguan, Guangdong, China

Dongguan Newmen Electronics Technology Co., Ltd 2022-12-02 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (EUT Name: 2.4G receiver /Model: KB955, KB958 /FCC ID: V4P-KB955) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the (Block Diagram ,Operational Description,Schematics) required to be submitted with this application be permanently withheld from public review. 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. Please contact me if there is any information you may need. Sincerely, Geroge He Manager Dongguan Newmen Electronics Technology Co., Ltd No.5, Xifa Road, Lin Village, Tangxia Town, Dongguan, Guangdong, China

Label Label Location

ANT

RF EXPOSURE EVALUATION EUT Specification EUT 2.4G receiver Model Number KB955 FCC ID V4P-KB955 Antenna gain (Max) -1.66dBi Operation Frequency 2403-2480MHz Input Rating DC 5V from PC Classification Per Stipulated Test Standard §15.247(i), §2.1093 Modulation GFSK Max. output power -6.61dBm(0.0002W) Test Requirement: According to §15.247(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Routine SAR evaluation refers to that specifically required by §2.1093, using measurements or computer simulation. When routine SAR evaluation is not required, portable transmitters with output power greater than the applicable low threshold require SAR evaluation to quality for TCB approval. One antenna is available for the EUT. The minimum separation distance is 5mm. 2.4G DTS: Transmit Frequency (MHz) Mode Measured Power (dBm) Tune up Power (dBm) Max tune up power(dBm) Calculation Result 1-g SAR 2403 GFSK -6.61 -7±1 -6 0.077877 3 2441 GFSK -7.38 -7±1 -6 0.078490 3 2480 GFSK -8.58 -8±1 -7 0.062843 3 According to KDB 447498, no stand-alone required for BT antenna, and no simultaneous SAR measurement is required. Signature: Tiger Xu Date: 2022-11-01

ANTENNA SPECIFICATION Specifications Summary ITEM SPEC. Model Name Center Frequency Horizontal Vertical 2403MHz 2441MHz 2480MHz 2403MHz 2441MHz 2480Hz -2.64-1.89-1.66 -7.09 -4.70-3.15 MAX. Gain - 1.66dBi Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Antenna Length 32mm Manufacture COMPX Semiconductor Corp Antenna Photo & Length (mm) Horizontal: 2403MHz 2441MHz 2480MHz -2.64776 -30.6718 -9.77028 - 1.89964 -35.918 -8.87095 - 1.66516 -24.7457 -7.99065 Vertical: 2403MHz 2441MHz 2480MHz -7.09317 -24. 1891 - 13.5194 -4.7048 -27.8246 - 11.666 -3. 1576 -29.4867 - 10.5684

Dongguan Newmen Electronics Technology Co., Ltd Declaration on model difference We the undersigned hereby confirm that these models are identical, and all models have the same RF module and antenna, PCB layout, schematics and component. Only the models name are different. Production name Trademark FCC ID Model no. 2.4G receiver N/A V4P-KB955 KB955, KB958 Sincerely, Geroge He Manager Dongguan Newmen Electronics Technology Co., Ltd No.5, Xifa Road, Lin Village, Tangxia Town, Dongguan, Guangdong, China

TRF No.: 01-R001-3A-2.4G TRF Originator: GTG TRF Date: 2022-06-29 Web: www.gtggroup.com E-mail: [email protected] Tel.: 86-400 755 8988 ELECTROMAGNETIC EMISSIONS COMPLIANCE REPORT FCC PART 15 SUBPART C REQUIREMENT OF 2.4G receiver Model No.: KB955, KB958 Trademark: N/A FCC ID: V4P-KB955 Report No.: E01A22100574F00102 Issue Date: November 24, 2022 Prepared for Dongguan Newmen Electronics Technology Co., Ltd No.5, Xifa Road, Lin Village, Tangxia Town, Dongguan, Guangdong, China Prepared by Dong Guan Anci Electronic Technology Co., Ltd. 1-2 Floor, Building A, No.11, Headquarters 2 Road, Songshan, Lake Hi-tech Industrial Development Zone, Dongguan City, Guangdong Pr., China. This report shall not be reproduced, except in full, without the written approval of Dong Guan Anci Electronic Technology Co., Ltd. 1 of 50 Report No.: E01A22100574F00102 TRF No.: 01-R001-3A-2.4G Global Testing , Great Quality. VERIFICATION OF COMPLIANCE Applicant: Dongguan Newmen Electronics Technology Co., Ltd No.5, Xifa Road, Lin Village, Tangxia Town, Dongguan, Guangdong, China Manufacturer: Dongguan Newmen Electronics Technology Co., Ltd No.5, Xifa Road, Lin Village, Tangxia Town, Dongguan, Guangdong, China Product Description: 2.4G receiver Trade Mark: N/A Model Number: KB955, KB958(There is no difference between the models except the model name) We hereby certify that: The above equipment was tested by Dong Guan Anci Electronic Technology Co., Ltd. The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.10-2013 and the energy emitted by the sample EUT tested as described in this report is in compliance with conducted and radiated emission limits of FCC Rules Part 15.247(2022). Date of Test : November 07, 2022 to November 15, 2022 Prepared by : Duke Liu/Editor Reviewer & Authorized Signer : Tiger Xu/ Supervisor 2 of 50 Report No.: E01A22100574F00102 TRF No.: 01-R001-3A-2.4G Global Testing , Great Quality. Modified Information Version Summary Revision Date Report No. Ver.1.0 Original Report / E01A22100574F00102 3 of 50 Report No.: E01A22100574F00102 TRF No.: 01-R001-3A-2.4G Global Testing , Great Quality. Table of Contents 1. GENERAL INFORMATION ............................................................................................................ 5 1.1 PRODUCT DESCRIPTION .............................................................................................................. 5 1.2 TEST METHODOLOGY .................................................................................................................. 5 2. TEST FACILITY ................................................................................................................................ 6 3. DESCRIPTION OF TEST MODES ................................................................................................ 7 4. SUMMARY OF TEST RESULTS ................................................................................................... 9 6DB BANDWIDTH MEASUREMENT ............................................................................................... 9 5. TEST SYSTEM UNCERTAINTY .................................................................................................. 10 6. CONDUCTED EMISSIONS TEST ............................................................................................... 11 6.1MEASUREMENT PROCEDURE: ..................................................................................................... 11 6.2TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................. 11 6.3MEASUREMENT EQUIPMENT USED: ............................................................................................. 11 6.4 CONDUCTED EMISSION LIMIT ..................................................................................................... 11 6.5 MEASUREMENT RESULT: ........................................................................................................... 12 7. RADIATED EMISSION TEST ....................................................................................................... 15 7.1MEASUREMENT PROCEDURE ...................................................................................................... 15 7.2TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................. 17 7.3MEASUREMENT EQUIPMENT USED: ............................................................................................. 18 7.4 RADIATED EMISSION LIMIT .......................................................................................................... 19 7.5 MEASUREMENT RESULT .......................................................................................................... 20 7.6 RADIATED MEASUREMENT PHOTOS: ........................................................................................... 26 8. 6DB BANDWIDTH MEASUREMENT ......................................................................................... 27 8.1MEASUREMENT PROCEDURE ...................................................................................................... 27 8.2TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................. 27 8.3 MEASUREMENT EQUIPMENT USED: ............................................................................................ 27 8.4 LIMIT ........................................................................................................................................ 27 8.5MEASUREMENT RESULTS: .......................................................................................................... 27 9. MAXIMUM PEAK OUTPUT POWER TEST .............................................................................. 28 9.1MEASUREMENT PROCEDURE .............................................................................................…

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