2BTI2-SYKJ-1212-WBDouble-key Bluetooth control switch

Drawing name Proportional units 1:1mmTime Chart number audit parameter Key description Key operation method 32-bit dual key Bluetooth three-color switch Huizhou Shuntranslation Technology Co., Ltd. K1 is the Bluetooth key and K2 is the lighting key Horn channel connector The red line is positive The black line is negative Power plug Thickness 12mm K1 key K2 key 40 84 89 87 Right speaker channel connector LED light plug Left speaker channel connector 600200 The red line is positive White to white light Yellow warm light LED light connector Power cord plug The red line is positive The black line is negative Input voltage: DC-12V The red power line is the positive power pole, and the black line is the negative power pole; Output power: DC12V-5A 60W Max The red strip light line is positive, the white line is the first route of white light, and yellow line is the second route of warm light; 1. Backlight: In standby mode, the backlight of the keys is indicated by white light, and after turning on, it is light; 2. Bluetooth: In standby mode, press and hold the K1 key to turn on Bluetooth, and after the mobile phone connects to Bluetooth (Mirror) press the K1 key to pause/play when playing music, press and hold the K1 key to adjust the volume /- (the volume will emit a beep sound it is adjusted to the maximum volume), double-click the K1 key to turn off Bluetooth; 3. Switch: Press the K2 key to turn on the LED, press the K2 key within 10 seconds after turning on the LED light to cycle (white-warm-mixed color-off) to switch the color temperature, and the K2 key for more than 10 seconds when any color temperature is lit. No operation is required to press it again to turn off the LED light; 4.immer: In the LED light on state, you can press and hold the K2 key to control the LED light from the brightest to the dimmest in any color, and press hold the K2 key again to control the LED light from the dimmest to the brightest; 5. Memory function: After turning off the LED light at any brightness and temperature. Turn it on again and it will be the previous color temperature and brightness state before it was turned off. FCC Statement Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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. lf this equipment does cause harmful interference to radio or television reception, which can be determined by tuming 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 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.

Covered Equipment Attestation Letter For Certification Service in the USA Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(i)-(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC ID Model name 2BTI2-SYKJ-1212-WB SYKJ-1212-WB, SYK-82CTD305WB-1 We, Applicant Company Name: HuiZhou ShunYi Technology CO., LTD Address: Huizhou, Huiyang District, Sanhe Street, U Valley, Building 1, 9thFloor Phone: 13867129928 certify 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. This includes the cybersecurity and anti-virus software produced or provided by Kaspersky Lab, Inc. or any of ist successors and assignees. We certify that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. If you have any questions, please feel free to contact us at the address shown below. Sincerely, Dec.18,2025 Signature Date Printed Name of Signee: Wen Long Company: HuiZhou ShunYi Technology CO., LTD Address: Huizhou, Huiyang District, Sanhe Street, U Valley, Building 1, 9thFloor Phone: 13867129928 Fax: Email:[email protected]

LocalRepresentativeLetter ForCertificationServiceintheUSA FederalCommunicationsCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoSection2.911(d)(7),oftheCommission’sRules(47C.F.R.)weattestasfollowsfor theproductlistedbelow: FCCIDModelname 2BTI2-SYKJ-1212-WBSYKJ-1212-WB,SYK-82CTD305WB-1 Weherebyacknowledgeasfollows: i.bothsigneesconfirmthatthepointofcontactacceptsresponsibilitytoactasaUS- AmericanRepresentativeonbehalfoftheapplicant ii.thepointofcontactprovidesthephysicalU.S.addressandemailaslistedbelow iii.bothpartiesmaintaintherequirementsofthisagreementfornolessthanoneyear afterthegranteehasterminatedallmarketingandimportationortheconclusionof anyCommission-relatedproceedinginvolvingtheequipment. US-AmericanPointofContactApplicant/ApprovalHolder CompanyName:FCCUSAgent,LLC HuiZhouShunYiTechnologyCO.,LTD FRN:0033402884 0037720802 ContactName:TimPayne WenLong Address:3722IllinoisAvenue,Saint Charles,IL,60174,USA Huizhou,HuiyangDistrict,SanheStreet, UValley,Building1,9thFloor Phone:708-571-3148 13867129928 Email:[email protected] [email protected]

Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we request confidentiality for the documentation of the following products: FCC ID Model name 2BTI2-SYKJ-1212-WB SYKJ-1212-WB, SYK-82CTD305WB-1 For the products listed above, we request permanent confidentiality for all applicable exhibits as there are: • the Operational Description • the Block Diagram • the Schematics • the Parts Lists • the Tune Up Information The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, Dec.18,2025 Signature Date Printed Name of Signee: Wen Long Company: HuiZhou ShunYi Technology CO., LTD Address: Huizhou, Huiyang District, Sanhe Street, U Valley, Building 1, 9thFloor Phone: 13867129928 Fax: Email: [email protected]

HuiZhou ShunYi Technology CO., LTD Huizhou, Huiyang District, Sanhe Street, U Valley, Building 1, 9thFloor Declaration Letter Date: Dec.18,2025 To: Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: For our business issue and marketing requirement, we would like to list different model number on the FCC certificates and reports, as following: FCC ID: 2BTI2-SYKJ-1212-WB Model Number: SYKJ-1212-WB, SYK-82CTD305WB-1 Model Difference: The only difference between the models is the color of appearance, the other (hardware and software) was the same as before. Sincerely, Name / Title Wen Long/Manager Company Name HuiZhou ShunYi Technology CO., LTD Company Address Huizhou, Huiyang District, Sanhe Street, U Valley, Building 1, 9thFloor Tel: 13867129928 Fax: Email: [email protected]

External Photographs FCC ID: 2BTI2-SYKJ-1212-WB

Label Sample for FCC ID: 2BTI2-LY01 FCC ID: 2BTI2-LY01 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. Size for the label: 1.5cm X 1cm Product Name : Double-key Bluetooth control switch Model : SYKJ-1212-WB FCC ID : 2BTI2-SYKJ-1212-WB

Internal photographs FCC ID: 2BTI2-SYKJ-1212-WB Antenna

MAXLAB TESTING CO., LTD. Report No.: MAX251123901602MPE Report No.: MAX251123901602MPE Page 1 of 7 FCC Part 15.247 FCC Part 15C Measurement and Test Report For HuiZhou ShunYi Technology CO., LTD FCC ID: 2BTI2-SYKJ-1212-WB FCC Rule(s): FCC Part 15.247 Product Description: Double-key Bluetooth control switch Tested Model: SYKJ-1212-WB Report No.: MAX251123901602RF Tested Date: Nov.22~Dec.17,2025 Issued Date: Dec.17,2025 Tested By: Lris Yao / Engineer Reviewed By: Levi Xiao / EMC Manager Approved & Authorized By: Salon Ouyang / PSQ Manager Prepared By: MAXLAB TESTING CO., LTD. 1/F, Building B, Xinshidai GR Park, Shiyan Street, Bao'an District, Shenzhen, Guangdong,518052,People’s Republic of China Tel: 400-882-9628 Fax: 86- 755-26508703 MAXLAB TESTING CO., LTD. Report No.: MAX251123901602MPE Report No.: MAX251123901602MPE Page 2 of 7 FCC Part 15.247 TABLE OF CONTENTS 1. GENERAL INFORMATION ...................................................................................................................................... 3 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) .................................................................................. 3 1.2 TEST STANDARDS ...................................................................................................................................................... 4 1.3 TEST METHODOLOGY ........................................................................................ ERROR! BOOKMARK NOT DEFINED. 1.4 TEST FACILITY .......................................................................................................................................................... 4 1.5 EUT SETUP AND TEST MODE ............................................................................ ERROR! BOOKMARK NOT DEFINED. 1.6 MEASUREMENT UNCERTAINTY ................................................................................................................................. 4 1.7 TEST EQUIPMENT LIST AND DETAILS ................................................................ ERROR! BOOKMARK NOT DEFINED. 2. SUMMARY OF TEST RESULTS .............................................................................................................................. 5 3. RF EXPOSURE ........................................................................................... ERROR! BOOKMARK NOT DEFINED. 3.1 STANDARD APPLICABLE .................................................................................... ERROR! BOOKMARK NOT DEFINED. 3.2 TEST RESULT..................................................................................................... ERROR! BOOKMARK NOT DEFINED. 4. ANTENNA REQUIREMENT .................................................................... ERROR! BOOKMARK NOT DEFINED. 4.1 STANDARD APPLICABLE .................................................................................... ERROR! BOOKMARK NOT DEFINED. 4.2 EVALUATION INFORMATION.............................................................................. ERROR! BOOKMARK NOT DEFINED. 5. POWER SPECTRAL DENSITY ............................................................... ERROR! BOOKMARK NOT DEFINED. 5.1 STANDARD APPLICABLE .................................................................................... ERROR! BOOKMARK NOT DEFINED. 5.2 TEST PROCEDURE .............................................................................................. ERROR! BOOKMARK NOT DEFINED. 5.3 ENVIRONMENTAL CONDITIONS ......................................................................... ERROR! BOOKMARK NOT DEFINED. 5.4 SUMMARY OF TEST RESULTS/PLOTS ................................................................. ERROR! BOOKMARK NOT DEFINED. 6. 6DB BANDWIDTH ..................................................................................... ERROR! BOOKMARK NOT DEFINED. 6.1 STANDARD APPLICABLE .................................................................................... ERROR! BOOKMARK NOT DEFINED. 6.2 TEST PROCEDURE .............................................................................................. ERROR! BOOKMARK NOT DEFINED. 6.3 ENVIRONMENTAL CONDITIONS ......................................................................... ERROR! BOOKMARK NOT DEFINED. 6.4 SUMMARY OF TEST RESULTS/PLOTS ................................................................. ERROR! BOOKMARK NOT DEFINED. 7. RF OUTPUT POWER ................................................................................ ERROR! BOOKMARK NOT DEFINED. 7.1 STANDARD APPLICABLE .................................................................................... ERROR! BOOKMARK NOT DEFINED. 7.2 TEST PROCEDURE .............................................................................................. ERROR! BOOKMARK NOT DEFINED. 7.3 ENVIRONMENTAL CONDITIONS ......................................................................... ERROR! BOOKMARK NOT DEFINED. 7.4 SUMMARY OF TEST RESULTS/PLOTS ................................................................. ERROR! BOOKMARK NOT DEFINED. 8. FIELD STRENGTH OF SPURIOUS EMISSIONS ................................. ERROR! BOOKMARK NOT DEFINED. 8.1 STANDARD APPLICABLE .................................................................................... ERROR! BOOKMARK NOT DEFINED. 8.2 TEST PROCEDURE .............................................................................................. ERROR! BOOKMARK NOT DEFINED. 8.3 CORRECTED AMPLITUDE & MARGIN CALCULATION ......................................... ERROR! BOOKMARK NOT DEFINED. 8.4 ENVIRONMENTAL CONDITIONS ......................................................................... ERROR! BOOKMARK NOT DEFINED. 8.5 SUMMARY OF TEST RESULTS/PLOTS ................................................................. ERROR! BOOKMARK NOT DEFINED. 9. OUT OF BAND EMISSIONS ..................................................................... ERROR! BOOKMARK NOT DEFINED. 9.1 STANDARD APPLICABLE ..............................…

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Inverted F Antenna Specification Summary ITEMANT SPEC Model Name 2.4G ANT HorizontalVertical 2400MHz 2441MHz 2500MHz2400MHz 2441MHz 2500MHz Center Frequency -1.73-0.84-0.68-6.15-3.70-2.32 MAX. Gain -0.68dBi PolarizationHorizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 2400 -1.73178 -30.0815 -8.48713 2450 -0.845801 -38.5605 -7.88012 2500 -0.685586 -24.0318 -6.79139 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 2400 -6.1530 -24.1420 -13.0295 2450 -3.7054 -26.5836 -10.6700 2500 -2.32122 -30.4301 -9.70536 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

MAXLAB TESTING CO., LTD. Report No.: MAX251123901602RF Report No.: MAX251123901602RF Page 1 of 33 FCC Part 15.247 FCC Part 15C Measurement and Test Report For HuiZhou ShunYi Technology CO., LTD FCC ID: 2BTI2-SYKJ-1212-WB FCC Rule(s): FCC Part 15.247 Product Description: Double-key Bluetooth control switch Tested Model: SYKJ-1212-WB Report No.: MAX251123901602RF Tested Date: Nov.22~Dec.17,2025 Issued Date: Dec.17,2025 Tested By: Lris Yao / Engineer Reviewed By: Levi Xiao / EMC Manager Approved & Authorized By: Salon Ouyang / PSQ Manager Prepared By: MAXLAB TESTING CO., LTD. 1/F, Building B, Xinshidai GR Park, Shiyan Street, Bao'an District, Shenzhen, Guangdong,518052,People’s Republic of China Tel: 400-882-9628 Fax: 86- 755-26508703 MAXLAB TESTING CO., LTD. Report No.: MAX251123901602RF Report No.: MAX251123901602RF Page 2 of 33 FCC Part 15.247 TABLE OF CONTENTS 1. GENERAL INFORMATION ...................................................................................................................................... 3 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) .................................................................................. 3 1.2 TEST STANDARDS ...................................................................................................................................................... 4 1.3 TEST METHODOLOGY ................................................................................................................................................ 4 1.4 TEST FACILITY .......................................................................................................................................................... 4 1.5 EUT SETUP AND TEST MODE .................................................................................................................................... 5 1.6 MEASUREMENT UNCERTAINTY ................................................................................................................................. 5 1.7 TEST EQUIPMENT LIST AND DETAILS ........................................................................................................................ 6 2. SUMMARY OF TEST RESULTS .............................................................................................................................. 7 3. RF EXPOSURE ............................................................................................................................................................ 8 3.1 STANDARD APPLICABLE ............................................................................................................................................ 8 3.2 TEST RESULT............................................................................................................................................................. 8 4. ANTENNA REQUIREMENT ..................................................................................................................................... 9 4.1 STANDARD APPLICABLE ............................................................................................................................................ 9 4.2 EVALUATION INFORMATION...................................................................................................................................... 9 5. POWER SPECTRAL DENSITY .............................................................................................................................. 10 5.1 STANDARD APPLICABLE .......................................................................................................................................... 10 5.2 TEST PROCEDURE .................................................................................................................................................... 10 5.3 ENVIRONMENTAL CONDITIONS ............................................................................................................................... 10 5.4 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................... 10 6. 6DB BANDWIDTH .................................................................................................................................................... 13 6.1 STANDARD APPLICABLE .......................................................................................................................................... 13 6.2 TEST PROCEDURE .................................................................................................................................................... 13 6.3 ENVIRONMENTAL CONDITIONS ............................................................................................................................... 13 6.4 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................... 13 7. RF OUTPUT POWER ............................................................................................................................................... 16 7.1 STANDARD APPLICABLE .......................................................................................................................................... 16 7.2 TEST PROCEDURE .................................................................................................................................................... 16 7.3 ENVIRONMENTAL CONDITIONS ............................................................................................................................... 16 7.4 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................... 16 8. FIELD STRENGTH OF SPURIOUS EMISSIONS ................................................................................................ 17 8.1 STANDARD APPLICABLE ...................................................…

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Test Setup Photos FCC ID: 2BTI2-SYKJ-1212-WB