2BCSG-LT-TWLString Light

ModelLT-T WL Color: RGB 16 million colors Connectivity Protocol: Bluetooth Working Voltage: 5V/2A Operating Temperature: -5~45°C Life Span: About 20,000 hours a b c 6cm/2.36" 600cm/236.2" 785cm/309" Dimensions a b c 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. 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. lf 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. Note: The Grantee is not responsible for any changes or modifications not expressly approved by the party responsible for compliance. such modifications could void the user's authority to operate the equipment. The device has been evaluated to meet general RF exposure requirement. To maintain compliance with FCC's RF exposure guidelines, the distance must be at least 20 cm between the radiator and your body, and fully supported by the operating and installation configurations of the transmitter and its antenna(s). 1. Color Selection 2. Play Preset Effects RGB 16 million colors Brightness Adjustment On/Off LED quantity Set up and save your favorite colors Timer Pause/Play Light direction Pause/Play Light direction 26 preset effects Loop all effects Brightness/Speed adjustment 3. Customize 4. Music Mode 1.Click 'Timer' button 2 2.Add new timer3. Set rulesand 'Save' 4. Click 'Send' to activate timer 16 music modes Loop all music modes Select your ambient sound volume 8 patterns Loop all patterns Brightness/Speed adjustment Customize color scheme Send color scheme 5. Timer FCC Statement Add timer Turn off Timer Send Timer Select Sleep Timer Set time Off / On Repeat Daily repeat Select days Cancel / Save Controller · Press - On / Switch Effects (8 regular effects + 2 music modes) · Press and hold for 2 seconds - Loop all 25 effects · Press and hold for 5 seconds - Off · Press and hold 10 seconds for twice - Restore factory settings *This application requires iOS 10.0 or later / Android 4.4 or later. Please scan the QR code to download the 'LED SMART' App. App Download 1. Download and install the “LED SMART” App. 2. Go to ‘Settings’ of your mobile device and turn on BT. 3. App automatically searches and lists all available devices nearby. Select your device to connect, then you can fully control lights. 1. The device cannot be connected? (1) Check whether the equipment is normally powered; (2) Whether the Bluetooth of the mobile phone is turned on; (3) Whether there are other mobile phones already connected, please disconnect if they are connected, Bluetooth 4.0 only supports one-to-many, and does not support many-to-many control; (4) If you still can't connect under normal operation, exit the APP and then reopen it; (5) Exit the APP, then restart the phone, power on the device again, reopen the APP software and connect again. 2. Why doesn't the timing work normally? If the Bluetooth device is physically powered off, the timing will be invalid and you need to reset the timing. Please make sure you set up timer and click "Send" to activate the timer Customer Support: For any problem with the product, please feel free to contact us via Amazon Message, we will reply and resolve your problem in 24 hours. * The user interfaces provided above are for reference only, and might be different from the latest version of the App. 1. Turn on multiple devices, keep the devices connected with the App and click the 'Group' button 2. Select the devices you wish to be grouped, click 'Add Device', and name the group to complete grouping 3. If you need to delete a group, just long-press the group to delete it. Grouping Devices Add devices Group Name the group Selected devices Long press to delete group FQA * Generally, 1 mobile device can group up to 5 devices together and control them simultaneously. This may vary from different phones. * If you are using an Android mobile device, please make sure you have enabled precise location access and nearby devices permission for our App.

Shenzhen Linktop IOT Co., Ltd * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter DATE 2024/1/12 ATTN.: Reviewing Engineer FCC ID: 2BCSG-LT-TWL FRN: 0034211540 Per section 2.911(d)(7) of the FCC rules, Shenzhen Linktop IOT Co., Ltd, certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: JOC Australia Inc . FRN: 0033379421 Physical U.S. Company Address: CASTLETON ST STE 665, CITY OF INDUSTRY ,CA 91748 United States of America Agent name: Benjamin. Smith/Vice President Agent Email Address: [email protected] Tel: +1(626) 341 3408 The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Signed: Printed name: jiajia Ge Title: Manager Company Name: Shenzhen Linktop IOT Co., Ltd Date: 1/4/2024 Agent Signed (if different to Applicant): Signed: Printed name: Benjamin. Smith Title: Vice President Company Name: JOC Australia Inc Date: 1/12/2024

Shenzhen Linktop IOT Co., Ltd Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 1/4/2024 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2BCSG-LT-TWL [Shenzhen Linktop IOT Co., Ltd] certifies 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. Sincerely, Signed: Printed name: jiajia Ge Title: Manager Company Name: Shenzhen Linktop IOT Co., Ltd Shenzhen Linktop IOT Co., Ltd Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 1/4/2024 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2BCSG-LT-TWL [Shenzhen Linktop IOT Co., Ltd] certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List(as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, Signed: Printed name: jiajia Ge Title: Manager Company Name: Shenzhen Linktop IOT Co., Ltd

Shenzhen Linktop IOT Co., Ltd 2024-01-04 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Attn: Director of Certification Authority to Act as Agent On our behalf, I appoint Shenzhen Alpha Product Testing Co., Ltd. Address: Building i, No.2, Lixin Road, Fuyong Street, Bao’an District, 518103, Shenzhen, Guangdong, China Person: Mark Zhu (Name: Shenzhen Alpha Product Testing Co., Ltd. and address: Building i, No.2, Lixin Road, Fuyong Street, Bao’an District, 518103, Shenzhen, Guangdong, China). to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, as specified by TMICO still resides with Shenzhen Linktop IOT Co., Ltd Address: 602B, 2A Building, Tongtai Times Center, No.6259 Baoan Avenue, Baoan District，Shenzhen, China (applicant name and address). Signature: Name Jiajia Ge Position Manager Company Name Shenzhen Linktop IOT Co., Ltd Address 602B, 2A Building, Tongtai Times Center, No.6259 Baoan Avenue, Baoan District, Shenzhen, China Tel +86 13686483621 Fax +86 13686483621 Email [email protected]

Shenzhen Linktop IOT Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: January 4, 2024 Subject; Request for Long Term Confidentiality FCC ID: 2BCSG-LT-TWL To Whom It May Concern, Pursuant to the provisions of the Commission’s 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 Operational Description Tune up 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. Signature: Name Jiajia Ge Position Manager Company Name Shenzhen Linktop IOT Co., Ltd Address 602B, 2A Building, Tongtai Times Center, No.6259 Baoan Avenue, Baoan District, Shenzhen, China Tel +86 13686483621 Fax +86 13686483621 Email [email protected]

FCC ID: 2BCSG-LT-TWL FCC ID: 2BCSG-LT-TWL FCC ID: 2BCSG-LT-TWL FCC ID: 2BCSG-LT-TWL

FCC ID: 2BCSG-LT-TWL Label Location

FCC ID: 2BCSG-LT-TWL ANT FCC ID: 2BCSG-LT-TWL

FCC ID: 2BCSG-LT-TWL RF Exposure evaluation According to 447498 D04 Interim General RF Exposure Guidance v01 1-mW Test Exemption A single RF source is exempt RF device (from the requirement to show data demonstrating compliance to RF exposure limits, as previously mentioned) if the available maximum time-averaged power is no more than 1 mW, regardless of separation distance. This exemption applies to all operating configurations and exposure conditions, for the frequency range 100 kHz to 100 GHz, regardless of fixed, mobile, or portable device exposure conditions. This is a standalone exemption, and it cannot be applied in conjunction with any other test exemption. 1-mW Test Exemption for Multiple Sources The 1-mW exemption intended for single transmitters may be also applied to simultaneous transmission conditions, within the same host device, according one of the following criteria: a) When maximum available power each individual transmitting antenna within the same time averaging period is ≤ 1 mW, and the nearest parts of the antenna structures of the simultaneously operating transmitters are separated by at least 2 cm. b) When the aggregate maximum available power of all transmitting antennas is ≤ 1 mW in the same time-averaging period. This exemption may not be combined with any other exemption. SAR-Based Exemption This exemption is applicable to the frequency range between 300 MHz and 6 GHz, with test separation distances between 0.5 cm and 40 cm, and for all RF sources in fixed, mobile, and portable device exposure conditions. Accordingly, a RF source is considered an RF exempt device if its available maximum time-averaged (matched conducted) power or its effective radiated power (ERP), whichever is greater, are below a specified threshold. This exemption threshold was derived based on general population 1-g SAR requirements. This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by follow Formulas “f” is in GHz, “d” is the separation distance (cm) FCC ID: 2BCSG-LT-TWL Simultaneous Transmission with SAR-based Exemptions For these cases, a device with multiple RF sources transmitting simultaneously will be considered an RF exempt device if the condition of following Formula is satisfied. (SAR-Based Exemption) P th =ERP 20cm *(d/20) -log(60/(ERP20cm* √ f) =3060*(0.5/20) -log(60/(3060* √ 2.402) = 2.787mW As this equipment: EIRP = Pm + Gi (if Gi＜0, to treat Gi value as 0) Pt=10 (EIRP/10) where: Pm = measured transmitter output power in dBm, Pt = transmitter output power in milliwatts, Gi = numeric gain of the transmitting antenna (unit-dBi), Ant gain Gi=1.85 dBi Pm=0.21dBm So Pt=10 (0.21/10) mW =1.050 mW< P th (2.787mW) Then the SAR test is exempted.

ALPHA's reports is using a digital certificate that is trusted on Adobe's official server. If there is no digital certificate or the digital certificate shows damaged in your report. Please do not accept the report. E-mail: [email protected] Tel: 4008-3008-95 Website: http://www.a-lab.cn FCC TEST REPORT FCC ID: 2BCSG-LT-TWL On Behalf of Shenzhen Linktop IOT Co., Ltd String Light Model No.: LT-TWL Prepared for : Shenzhen Linktop IOT Co., Ltd Address : 602B, 2A Building, Tongtai Times Center, No.6259 Baoan Avenue, Baoan District, Shenzhen, China Prepared By : Shenzhen Alpha Product Testing Co., Ltd. Address : Building i, No.2, Lixin Road, Fuyong Street, Bao’an District, 518103, Shenzhen, Guangdong, China Report Number : A2312142-C01-R01 Date of Receipt : December 22, 2023 Date of Test : December 22, 2023 - January 3, 2024 Date of Report : January 3, 2024 Version Number : V0 Test Result : Pass Page 2 of 52 Report No.: A2312142-C01-R01 TABLE OF CONTENTS Description Page TABLE OF CONTENTS --------------------------------------------------------------------------------------------------------- 2 1. Summary of Standards And Results -------------------------------------------------------------------------------- 5 1.1. Description of Standards and Results ------------------------------------------------------------------------ 5 2. General Information ------------------------------------------------------------------------------------------------------ 6 2.1. Description of Device (EUT) ------------------------------------------------------------------------------------ 6 2.2. Accessories of Device (EUT) ----------------------------------------------------------------------------------- 7 2.3. Tested Supporting System Details----------------------------------------------------------------------------- 7 2.4. Block Diagram of connection between EUT and simulators -------------------------------------------- 7 2.5. Test Mode Description -------------------------------------------------------------------------------------------- 7 2.6. Test Conditions ----------------------------------------------------------------------------------------------------- 8 2.7. Test Facility ---------------------------------------------------------------------------------------------------------- 8 2.8. Measurement Uncertainty --------------------------------------------------------------------------------------- 8 2.9. Test Equipment List ----------------------------------------------------------------------------------------------- 9 3. Spurious Emission ------------------------------------------------------------------------------------------------------- 10 3.1. Test Limits ---------------------------------------------------------------------------------------------------------- 10 3.2. Test Procedure ---------------------------------------------------------------------------------------------------- 10 3.3. Test Setup ---------------------------------------------------------------------------------------------------------- 11 3.4. Test Results -------------------------------------------------------------------------------------------------------- 12 4. Power Line Conducted Emission ----------------------------------------------------------------------------------- 20 4.1. Test Limits ---------------------------------------------------------------------------------------------------------- 20 4.2. Test Procedure ---------------------------------------------------------------------------------------------------- 20 4.3. Test Setup ---------------------------------------------------------------------------------------------------------- 20 4.4. Test Results -------------------------------------------------------------------------------------------------------- 20 5. Conducted Maximum peak Output Power------------------------------------------------------------------------ 23 5.1. Test limits ----------------------------------------------------------------------------------------------------------- 23 5.2. Test Procedure ---------------------------------------------------------------------------------------------------- 23 5.3. Test Setup ---------------------------------------------------------------------------------------------------------- 23 5.4. Test Results -------------------------------------------------------------------------------------------------------- 23 6. Peak Power Spectral Density ----------------------------------------------------------------------------------------- 27 6.1. Test limits ----------------------------------------------------------------------------------------------------------- 27 6.2. Test Procedure ---------------------------------------------------------------------------------------------------- 27 6.3. Test Setup ---------------------------------------------------------------------------------------------------------- 27 6.4. Test Results -------------------------------------------------------------------------------------------------------- 27 7. Bandwidth ------------------------------------------------------------------------------------------------------------------ 32 7.1. Test limits ----------------------------------------------------------------------------------------------------------- 32 7.2. Test Procedure ---------------------------------------------------------------------------------------------------- 32 7.3. Test Setup ---------------------------------------------------------------------------------------------------------- 32 7.4. Test Results -------------------------------------------------------------------------------------------------------- 32 8. Band Edge Check -------------------------------------------------------------------------------------------------------- 40 8.1. Test limits ----------------------------------------------------------------------------------------------------------- 40 8.2. Test Procedure ----------------------------------------…

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Report No.: BL-SZ22A0289-901 Tel: +86-755-66850100 E-mail: [email protected] Page No. 1 / 14 Web: www.titcgroup.com Template No.: TRP-Passive-EN (2022-09-07) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China TEST REPORT Applicant: Shenzhen LinkedSparx Technology Co., Ltd Address: 606, 82, 4th Industrial Park, Tantou, Songgang, Bao'an District, Shenzhen City, China. Equipment Type: SYRO-Bricks Model Name: LS-B3 Brand Name: LinkedSparx Test Standard: ANSI/IEEE Std 149-1979 Test Date: Oct. 12, 2022 Date of Issue: Oct. 17, 2022 ISSUED BY: Shenzhen BALUN Technology Co., Ltd. Tested by: Mai Jintian Checked by: Tolan Tu Approved by: Wei Yanquan (Chief Engineer) _______________ _______________ _______________ Report No.: BL-SZ22A0289-901 Tel: +86-755-66850100 E-mail: [email protected] Page No. 2 / 14 Web: www.titcgroup.com Template No.: TRP-Passive-EN (2022-09-07) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Revision History Version Issue Date Revisions Rev. 01 Oct. 17, 2022 Initial Issue TABLE OF CONTENTS 1 GENERAL INFORMATION ......................................................................................................... 3 1.1 Test Laboratory ..................................................................................................................... 3 1.2 Test Location ......................................................................................................................... 3 2 PRODUCT INFORMATION ......................................................................................................... 4 2.1 Applicant Information ............................................................................................................ 4 2.2 Manufacturer Information ...................................................................................................... 4 2.3 General Description for Equipment under Test (EUT) .......................................................... 4 2.4 Ancillary Equipment .............................................................................................................. 5 2.5 Technical Information ............................................................................................................ 5 3 SUMMARY OF TEST RESULTS ................................................................................................. 6 3.1 Test Standards ...................................................................................................................... 6 3.2 Test Verdict ........................................................................................................................... 6 3.3 Test Uncertainty .................................................................................................................... 6 4 GENERAL TEST CONFIGURATIONS ........................................................................................ 7 4.1 Test Condition ....................................................................................................................... 7 4.2 Test Equipment List .............................................................................................................. 7 4.3 Test Setup ............................................................................................................................. 8 ANNEX A TEST RESULTS ............................................................................................................. 9 A.1 Gain and Efficiency ............................................................................................................... 9 ANNEX B RADIATION PATTERN ................................................................................................ 10 ANNEX C TEST SETUP PHOTOS ............................................................................................... 13 ANNEX D EUT PHOTO ................................................................................................................ 13 Report No.: BL-SZ22A0289-901 Tel: +86-755-66850100 E-mail: [email protected] Page No. 3 / 14 Web: www.titcgroup.com Template No.: TRP-Passive-EN (2022-09-07) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 1 GENERAL INFORMATION 1.1 Test Laboratory Name Shenzhen BALUN Technology Co., Ltd. Address Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Phone Number +86 755 6685 0100 1.2 Test Location Name Shenzhen BALUN Technology Co., Ltd. Location Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 1/F, Building B, Ganghongji High-tech Intelligent Industrial Park, No. 1008, Songbai Road, Yangguang Community, Xili Sub-district, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ22A0289-901 Tel: +86-755-66850100 E-mail: [email protected] Page No. 4 / 14 Web: www.titcgroup.com Template No.: TRP-Passive-EN (2022-09-07) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 2 PRODUCT INFORMATION 2.1 Applicant Information Applicant Shenzhen LinkedSparx Technology Co., Ltd Address 606, 82, 4th Industrial Park, Tantou, Songgang, Bao'an District, Shenzhen City, China. 2.2 Manufacturer Information Manufacturer Shenzhen Intermediate Technology Co., Ltd Address Room 703, Baofeng Building, No.2006 Dongmen South Road, Xinnan Community, Nanhu Street, Luohu District, Shenzhen City, China. 2.3 General Description for Equipment under Test (EUT) EUT Name SYRO-Bricks Model Name Under Test LS-B3 Antenna Type PCB Antenna Dimensions 14.3997*6.85 mm Report No.: BL-SZ22A0289-901 Tel: +86-755-66850100 E-mail: [email protected] Page No. 5 / 14 Web: www.titc…

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FCC ID: 2BCSG-LT-TWL 1.1. Photo of Radiated Emission test FCC ID: 2BCSG-LT-TWL 1.2. Photo of Conducted Emission test