2BBHC-LD-RL-RGBWRGBW ROCK LIGHT

FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. 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. 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. NOTE 2: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Zhongshan Linde Electronic Technology Co., Ltd. One Of The 5th Floor Slabs Of Building AHua Yuan Road 2.Xiaolan Town, Zhongshan, Guangdong, China Date: 2023-06-28 FEDERAL COMMUNICATIONS COMMISSION AUTHORIZATION AND EVALUATION DIVISION 7435 OAKLAND MILLS ROAD COLUMBIA, MD 21046 Ref: Attestation Statements Part 2.911(d) (7) Filing Grantee Code: 2BBHC Zhongshan Linde Electronic Technology Co., Ltd. certifies that, as of the date of the filing of the application, [USA MEIHUA TRADING INC] is our designated U.S. agent for service of process for the above referenced Grantee Code. Zhongshan Linde Electronic Technology Co., Ltd. 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. [USA MEIHUA TRADING INC] accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced Grantee Code. Designated U.S. Agent Information: Name: [USA MEIHUA TRADING INC] FRN: [0033406166] Address: [5379 Pine Valley Ct Boulder CO 80301 United States] Contact Person: [Harley Quinn] Tel.: [1-312-363-9424] Email: [[email protected]] Sincerely, Signed on behalf of Zhongshan Linde Electronic Technology Co., Ltd. Signed on behalf of USA MEIHUA TRADING INC Name: Jie Zhang Name: Harley Quinn Title: Manager Title: Manager Date: 2023-06-28 Date: 2023-06-28 3-06-28 arley Quiuinnnnnnnnnnnnn nager ectronic Technnnnnolooooooogy Co. ame:Jie Zhang

Reference No.: WTH23X05115769W Page 2 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 2 - EUT EXTERNAL PHOTOGRAPHS EUT View 1 EUT View 2 Reference No.: WTH23X05115769W Page 3 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 3 EUT View 4 Reference No.: WTH23X05115769W Page 4 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 5 EUT View 6 Reference No.: WTH23X05115769W Page 5 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 7

Reference No.: WTH23X05115769W Page 1 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn ANNEX EXHIBIT 1 - PRODUCT LABELING Proposed FCC ID Label Format FCC ID: 2BBHC-LD-RL-RGBW Specifications: The label shall be securely affixed to a permanently attached part of the device, in a location where it is visible or easily accessible to the user, and shall not be readily detachable. The label shall be sufficiently durable to remain fully legible and intact on the device in all normal conditions of use throughout the device’s expected lifetime. Proposed Label Location on EUT FCC ID Label Location

Reference No.: WTH23X05115769W Page 6 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 3 - EUT INTERNAL PHOTOGRAPHS EUT Housing and Board View 1 Solder Board-Component View 1 Reference No.: WTH23X05115769W Page 7 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 2 Antenna View

1. RF Exposure Requirements 1.1 General Information Client Information Applicant: Zhongshan Linde Electronic Technology Co., Ltd. Address of applicant: One Of The 5th Floor Slabs Of Building A Hua Yuan Road 2, Xiaolan Town Zhongshan, Guangdong, CHINA 528400 Manufacturer: Zhongshan Linde Electronic Technology Co., Ltd. Address of manufacturer: One Of The 5th Floor Slabs Of Building A Hua Yuan Road 2, Xiaolan Town Zhongshan, Guangdong, CHINA 528400 General Description of EUT: Product Name: RGBW ROCK LIGHT Trade Name / Model No.: LD-RL-RGBW-4 POD Adding Model(s): LD-RL-RGBW-8 POD Rated Voltage: DC12V Power Adapter: / FCC ID: 2BBHC-LD-RL-RGBW Equipment Type: Mobile device Technical Characteristics of EUT: Bluetooth Bluetooth Version: V4.0 (BLE mode) Frequency Range: 2402-2480MHz RF Output Power: -3.52dBm (Conducted) Data Rate: 1Mbps Modulation: GFSK Quantity of Channels: 40 Channel Separation: 2MHz Type of Antenna: PCB Antenna Antenna Gain: 3.43dBi 1.2 RF Exposure Exemption According to §1.1307(b)(3) and KDB 447498 D04 Interim General RF Exposure Guidance v01, system operating under the provisions of this section shall be operating in a manner that the public is not exposed to radio frequency energy level in excess limit for maximum permissible exposure. Option A: FCC Rule Part 1.1307 (b)(3)(i)(A):The available maximum time-averaged power is no more than 1mW, regardless of separation distance. Option B: FCC Rule Part 1.1307 (b)(3)(i)(B): The available maximum time-averaged power or effective radiated power (ERP), whichever is greater, is less than or equal to the threshold P th (mW) described in the following formula. P th is given by: Option C: FCC Rule Part 1.1307 (b)(3)(i)(C): The minimum separation distance (R in meters) from the body of a nearby person for the frequency (f in MHz) at which the source operates, the ERP (watts) is no more than the calculated value prescribed for that frequency. R must be at least λ/2π, where λ is the free-space operating wavelength in meters. Single RF Sources Subject to Routine Environmental Evaluation RF Source frequency (MHz) Threshold ERP (watts) 0.3-1.34 1,920 R 2 1.34-30 3,450 R 2 /f 2 30-300 3.83 R 2 300-1,500 0.0128 R 2 f 1,500-100,000 19.2R 2 For Multiple RF sources: FCC Rule Part 1.1307(b)(3)(ii): (A) The available maximum time-averaged power of each source is no more than 1 mW and there is a separation distance of two centimeters between any portion of a radiating structure operating and the nearest portion of any other radiating structure in the same device, except if the sum of multiple sources is less than 1 mW during the time-averaging period, in which case they may be treated as a single source (separation is not required). (B) In the case of fixed RF sources operating in the same time-averaging period, or of multiple mobile or portable RF sources within a device operating in the same time averaging period, if the sum of the fractional contributions to the applicable thresholds is less than or equal to 1 as indicated in the following equation. 1.3 Calculated Result Radio Access Technology Prediction Frequency Output Power Antenna Gain Duty Cycle Tune-Up Time-Averaged Power ERP (MHz) (dBm) (dBi) (%) (dBm) (dBm) Bluetooth 2402 -3.52 3.43 100 -3.00 -1.72 Frequency Option Min. Distance Max. Power Exposure Limit Ratio Result (MHz) (cm) (dBm) (mW) (mW) Pass/Fail 2402 C 20.00 -1.72 0.67 768.00 0.01 Pass Note: 1. Time-Averaged Power=Output Power * Duty Cycle; ERP= Time-Averaged Power+ Antenna gain-2.15dB 2. Option A, B and C refers as clause 1.2. 3. For option B, Max (time-averaged power, effective radiated power (ERP)) converts to Max. Power. For option C, ERP converts to Max. Power; 4. For option B, P th (mW) converts to Exposure Limit (mW); For option C, ERP (W) converts to Exposure Limit (mW). 5. Ratio= Tune-Up ERP (mW)/ Exposure Limit (mW) Mode for Simultaneous Multi-band Transmission: Radio Access Technology Ratio 1 Ratio 2 Simultaneous Ratio Limit Result Pass/Fail -- -- -- -- -- -- Result: Pass

Inverted F Antenna Specification Summary Model Name 2.4G ANT HorizontalVertical 2400MHz 2450MHz 2500MHz2400MHz 2450MHz 2500MHz Center Frequency -1.26-0.76-0.58-5.25-2.46-1.86 MAX. Gain -0.58dBi PolarizationHorizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance50 Ohm Antenna Length 38.20mm Antenna Photo & Length (mm) Add ress of Manufacture Antenna type PCB antenna SHENZHEN SHENG RUN TECHNOLOGY CO., LTD 6th floor,Gate No 3 of Huaqiang LogisticsBuilding,3rd Road of Longzhu, Nanshan Dist.Shenzhen,China Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain(dBi) Frequency (MHz) MaxMinAvg 2400-1.26174-30.0801-7.18716 2450-0.765802-36.5604-7.48023 2500-0.585582-22.0315-6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dBi) Frequency (MHz) MaxMinAvg 2400-5.2537-22.1424-12.4294 2450-2.4652-24.5837-10.4702 2500-1.86120-29.5214-9.20432

Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 1 of 35 TEST REPORT Reference No. .................... : WTH23X05115769W FCC ID ................................ : 2BBHC-LD-RL-RGBW Applicant ........................... : Zhongshan Linde Electronic Technology Co., Ltd. Address ............................. : One Of The 5th Floor Slabs Of Building A Hua Yuan Road 2, Xiaolan Town Zhongshan, Guangdong, CHINA 528400 Manufacturer ..................... : The same as Applicant Address ............................. : The same as Applicant Product Name ................... : RGBW ROCK LIGHT Model No.. .......................... : LD-RL-RGBW-4 POD Standards .......................... : FCC Part 15.247 Date of Receipt sample .... : 2023-05-29 Date of Test........................ : 2023-05-29 to 2023-06-09 Date of Issue ..................... : 2023-06-09 Test Report Form No. ....... : WTX_Part 15_247W Test Result ......................... : Pass Remarks: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of approver. Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. Address: 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Email: [email protected] Tested by: Approved by: Mike Shi Silin Chen Reference No.: WTH23X05115769W Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 2 of 35 TABLE OF CONTENTS 1. GENERAL INFORMATION .................................................................................................................................... 4 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ......................................................................... 4 1.2 TEST STANDARDS ................................................................................................................................................. 5 1.3 TEST METHODOLOGY ........................................................................................................................................... 5 1.4 TEST FACILITY ...................................................................................................................................................... 5 1.5 EUT SETUP AND TEST MODE .............................................................................................................................. 6 1.6 MEASUREMENT UNCERTAINTY ............................................................................................................................. 7 1.7 TEST EQUIPMENT LIST AND DETAILS ................................................................................................................... 8 2. SUMMARY OF TEST RESULTS ......................................................................................................................... 10 3. ANTENNA REQUIREMENT ................................................................................................................................. 11 3.1 STANDARD APPLICABLE ..................................................................................................................................... 11 3.2 EVALUATION INFORMATION ................................................................................................................................ 11 4. POWER SPECTRAL DENSITY ........................................................................................................................... 12 4.1 STANDARD APPLICABLE ..................................................................................................................................... 12 4.2 TEST SETUP BLOCK DIAGRAM ........................................................................................................................... 12 4.3 TEST PROCEDURE .............................................................................................................................................. 12 4.4 SUMMARY OF TEST RESULTS/PLOTS ................................................................................................................. 12 5. DTS BANDWIDTH ................................................................................................................................................. 13 5.1 STANDARD APPLICABLE ..................................................................................................................................... 13 5.2 TEST SETUP BLOCK DIAGRAM ........................................................................................................................... 13 5.3 TEST PROCEDURE .............................................................................................................................................. 13 5.4 SUMMARY OF TEST RESULTS/PLOTS ................................................................................................................. 13 6. RF OUTPUT POWER ............................................................................................................................................ 14 6.1 STANDARD APPLICABLE ..................................................................................................................................... 14 6.2 TEST SETUP BLOCK DIAGRAM ........................................................................................................................... 14 6.3 TEST PROCEDURE .............................................................................................................................................. 14 6.4 SUMMARY OF TEST RESULTS/PLOTS ................................................................................................................. 14 7. FIELD STRENGTH OF SPURIOUS EMISSIONS .....…

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Reference No.: WTH23X05115769W Page 8 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 4 - TEST SETUP PHOTOGRAPHS Radiation Emission Test Setup (Below 30MHz) Radiation Emission Test Setup (30MHz to 1GHz) Reference No.: WTH23X05115769W Page 9 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Radiation Emission Test Setup (1GHz to 18GHz) Radiation Emission Test Setup (Above 18GHz) Reference No.: WTH23X05115769W Page 10 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn ***** END OF REPORT *****