2AMTD-DK-SSwitch X

FCC Warning 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. 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

GuangdongSIRUIOpticalCo.,Ltd. Modeldifferencestatement ProductName:SwitchX ModelNo.:DK-S,DK-SD,DK-SL We(GuangdongSIRUIOpticalCo.,Ltd.,TheThirdIndustrialDistrict,WuguishanTown, ZhongshanCity,GuangdongProvince,China)herebystatethatallmodelsaboveare identicalininteriorstructure,electricalcircuitsandcomponents,exceptthecolorand modelNo.aredifferentformarkingrequirement. Signature: Name/title:junxiLi/ Tel:86-760-88897373 Email:[email protected] Date:4.19.2021

C5266091_X8_Ed.1 1/1 LetterofAuthorization GuangdongSIRUIOpticalCo.,Ltd. Company:GuangdongSIRUIOpticalCo.,Ltd. Address:TheThirdIndustrialDistrict,WuguishanTown,ZhongshanCity, GuangdongProvince,China ProductName:SwitchX ModelNumber:DK-S,DK-SD,DK-SL FCCIdentifier:2AMTD-DK-S WeauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdelCarme,s/n, 08193Bellaterra,Spain,toactonourbehalfonallmattersconcerningthe abovenamedequipment. AnyindividualwithinLGAITechnologicalCenterS.A.isauthorizedtoactonour behalfandtakeactionontheapplication. WedeclarethatauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdel Carme,s/n,08193Bellaterra,Spain,isallowedtoforwardallinformation relatedtotheapprovalprojecttotheFederalCommunicationCommissionand todiscussanyissuesconcerningtheapprovalapplication.Anyandallacts carriedoutbyLGAITechnologicalCenterS.A.onourbehalfshallhavethe sameeffectasactsofourown. Name:junxiLi Date:4/19/2021 Title:/ Signatureofapplicant:

C5266091_X10_Ed.1 1/1 GuangdongSIRUIOpticalCo.,Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 Date:4/19/2021 Subject:RequestforConfidentiality FCCID:2AMTD-DK-S ToWhomItMayConcern, PursuanttotheprovisionsofSections0.457and0.459ofCommission'srules (47CFR0.457,0.459),wearerequestingtheCommissiontowithholdthefollowing attachment(s)asconfidentialdocumentfrompublicdisclosure. ExhibitsLong-Term Confidentiality Short-Term Confidentiality IDLabel/LocationNoNo AttestationStatementNoNo ExternalPhotosNo BlockDiagram Schematics TestReportNoNo TestSetupPhotosNo User’sManual InternalPhotos PartsList/TuneUp RFExposureInfo OperationalDescription CoverLetter(s)NoNo SDRSoftware/SecurityInfoNo Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionare consideredasproprietaryinformationinoperationoftheequipment.Thepublic disclosureofabovedocumentsmightbeharmfultoourcompanyandwouldgive competitoranunfairadvantageinthemarket. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. Sincerely, Signature: Name:junxiL i Date: 4/19/2021 Title:/

1 - Page 1 of 5 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] APPENDIX 1- EUT PHOTO Photo 1 (For model DK-S) Photo 2 1 - Page 2 of 5 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 3 Photo 4 1 - Page 3 of 5 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 5 Photo 6 1 - Page 4 of 5 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 7 Photo 8 1 - Page 5 of 5 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 9

Size：26*20mm Product Model:DK-S FCC ID: 2AMTD-DK-S Made in China Product Model:DK-SD FCC ID: 2AMTD-DK-S Made in China Product Model:DK-SL FCC ID: 2AMTD-DK-S Made in China

1 - Page 1 of 6 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] APPENDIX 1- EUT PHOTO Photo 1 (For model DK-S) Photo 2 BT ANT 1 - Page 2 of 6 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 3 1 - Page 3 of 6 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 4 Photo 5 1 - Page 4 of 6 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 6 Photo 7 1 - Page 5 of 6 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 8 Photo 9 1 - Page 6 of 6 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 10 Photo 11

Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] RF EXPOSURE Test Report Report No.: MTi210125011-02E2 Date of issue: Apr. 09, 2021 Applicant: Guangdong SIRUI Optical Co., Ltd Product name: Switch X Model(s): DK-S, DK-SD, DK-SL FCC ID: 2AMTD-DK-S Shenzhen Microtest Co., Ltd. http://www.mtitest.com - Page 2 of 6- Report No.: MTi210125011-02E2 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Instructions 1. The report shall not be partially reproduced without the written consent of the laboratory; 2. The test results of this report are only responsible for the samples submitted; 3. This report is invalid without the seal and signature of the laboratory; 4. This report is invalid if transferred, altered or tampered with in any form without authorization; 5. Any objection to this report shall be submitted to the laboratory within 15 days from the date of receipt of the report. - Page 3 of 6- Report No.: MTi210125011-02E2 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] TEST RESULT CERTIFICATION Applicant’s name .................... : Guangdong SIRUI Optical Co., Ltd Address .................................. : The Third Industrial District, Wuguishan Town, Zhongshan City, Guangdong Province, China Manufacturer's Name ............. : Guangdong SIRUI Optical Co., Ltd Address .................................. : The Third Industrial District, Wuguishan Town, Zhongshan City, Guangdong Province, China Product description Product name ......................... : Switch X Trademark ............................. : DUKEN Model Name .......................... : DK-S Serial Model ............................ DK-SD, DK-SL Standards ............................... : N/A Test procedure ....................... : KDB 447498 D01 v06 Date of Test Date (s) of performance of tests ............. : Feb. 03, 2021 ~ Apr. 09, 2021 Test Result .............................................. : Pass This device described above has been tested by Shenzhen Microtest Co., Ltd. and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. Testing Engineer : (Danny Xu) Technical Manager : (Leo Su) Authorized Signatory : (Tom Xue) - Page 4 of 6- Report No.: MTi210125011-02E2 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Table of Contents 1. STANDALONE SAR TEST EXCLUSION CONSIDERATIONS ......................................................................................... 5 2. SAR TEST EXCLUCSION THRESHOLDS ..................................................................................................................... 6 - Page 5 of 6- Report No.: MTi210125011-02E2 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] 1. Standalone SAR test exclusion considerations Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions. The minimum test separation distance defined in 4.1 f) is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander. To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified, typically in the SAR measurement or SAR analysis report, by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting are required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for SAR test exclusion. When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions. a) For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR, and ≤ 7.5 for 10-g extremity SAR, where  f (GHz) is the RF channel transmit frequency in GHz  Power and distance are rounded to the nearest mW and mm before calculation  The result is rounded to one decimal place for comparison  The values 3.0 and 7.5 are referred to as numeric thresholds in step b) below The test exclusions are applicable only when the minimum test separa…

Text truncated - open the document above for the full version.

Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Test Report Report No.: MTi210125011-02E1 Date of issue: Apr. 09, 2021 Applicant: Guangdong SIRUI Optical Co., Ltd Product name: Switch X Model(s): DK-S, DK-SD, DK-SL FCC ID: 2AMTD-DK-S Shenzhen Microtest Co., Ltd. http://www.mtitest.com - Page 2 of 46 - Report No.: MTi210125011-02E1 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Instructions 1. The report shall not be partially reproduced without the written consent of the laboratory; 2. The test results of this report are only responsible for the samples submitted; 3. This report is invalid without the seal and signature of the laboratory; 4. This report is invalid if transferred, altered or tampered with in any form without authorization; 5. Any objection to this report shall be submitted to the laboratory within 15 days from the date of receipt of the report. - Page 3 of 46 - Report No.: MTi210125011-02E1 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Table of Contents 1. GENERAL INFORMATION ............................................................................................................................... 6 1.1. DESCRIPTION OF EUT ................................................................................................................................................... 6 1.2. OPERATION CHANNEL LIST .............................................................................................................................................. 6 1.3. TEST CHANNEL LIST ....................................................................................................................................................... 7 1.4. ANCILLARY EQUIPMENT LIST ........................................................................................................................................... 7 1.5. DESCRIPTION OF SUPPORT UNITS .................................................................................................................................... 7 2. SUMMARY OF TEST RESULTS ....................................................................................................................... 8 3. TEST FACILITIES AND ACCREDITATIONS .................................................................................................... 9 3.1. TEST LABORATORY ........................................................................................................................................................ 9 3.2. ENVIRONMENTAL CONDITIONS ........................................................................................................................................ 9 3.3. MEASUREMENT UNCERTAINTY ........................................................................................................................................ 9 3.4. TEST SOFTWARE ........................................................................................................................................................... 9 4. EQUIPMENT LIST ........................................................................................................................................... 10 5. TEST RESULT ................................................................................................................................................. 11 5.1. ANTENNA REQUIREMENT ............................................................................................................................................. 11 5.1.1 Standard Requirement ...................................................................................................................................... 11 5.1.2 EUT Antenna ..................................................................................................................................................... 11 5.2. PEAK OUTPUT POWER TEST ......................................................................................................................................... 12 5.2.1 Limit .................................................................................................................................................................. 12 5.2.2 Test setup .......................................................................................................................................................... 12 5.2.3 Test Procedure ................................................................................................................................................... 12 5.2.4 Te s t Results ........................................................................................................................................................ 12 5.3. CONDUCTED EMISSION ................................................................................................................................................ 15 5.3.1 Limits ................................................................................................................................................................. 15 5.3.2 Te s t Setup .......................................................................................................................................................... 15 5.3.3 Te s t Procedure ................................................................................................................................................... 16 5.3.4 Te s t Results .................................…

Text truncated - open the document above for the full version.

Model: DK-S Radiated emission Conducted emission