2AVJP-DSB114WT20BKLED LAMP

LED LAMP LED LAMP

Hangzhou Sky-Lighting CO., Ltd. Date: 2020-11-17 Subject: Ad Hoc Mode Function Declaration FCC ID: 2AVJP-DSB114WT20BK To Whom it may concern, This device is acting as slave and operating in the 2.4 GHz (2412 – 2462 MHz) band. Ad Hoc function is supported but not able to operate on non-US frequencies. Please contact the one signed below or the authorized agent for this filing. Thank you. Regards, Name&Position: Junhong Dong /Engineer Company: Hangzhou Sky-Lighting CO., Ltd. Adress: No.161 North Star-Bridge Road, Linping, Hangzhou, Zhejiang, China Tel.: 0571-86263850 Fax.: 0571-86262615 E-Mail: [email protected]

Hangzhou Sky-Lighting CO., Ltd. No.161 North Star-Bridge Road, Linping, Hangzhou, Zhejiang, China --------------------------------------------------------------------------------------------------------------------- Date: 2020-11-17 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AVJP-DSB114WT20BK Confidentiality Request To whom it may concern, Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of the information accompanying this application as outlined below: ☒Block Diagram ☐Tune-Up Information ☒Operational Description ☐Security Information ☒Schematics ☐Software Defined Radio (SDR) Information ☐Parts List 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. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Hangzhou Sky-Lighting CO., Ltd. ------------------------------- (Junhong Dong) (Engineer)

Hangzhou Sky-Lighting CO., Ltd. No.161 North Star-Bridge Road, Linping, Hangzhou, Zhejiang, China -------------------------------------------------------------------------------- (FCC ID：2AVJP-DSB114WT20BK) POWER OF ATTORNEY DATE: 2020-11-17 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: We, the undersigned, hereby authorize Waltek Testing Group (Shenzhen) Co., Ltd. Jandy So on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Waltek Testing Group (Shenzhen) Co., Ltd. Jandy So on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, Hangzhou Sky-Lighting CO., Ltd. are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, Hangzhou Sky-Lighting CO., Ltd. ------------------------------- (Junhong Dong) (Engineer)

Reference No.: WTX20X10077660W Page 2 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn EXHIBIT 2 - EUT EXTERNAL PHOTOGRAPHS EUT View 1 EUT View 2 Reference No.: WTX20X10077660W Page 3 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn EUT View 3 EUT View 4 Reference No.: WTX20X10077660W Page 4 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn EUT View 5 EUT View 6

Reference No.: WTX20X10077660W Page 1 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn ANNEX EXHIBIT 1 - PRODUCT LABELING Proposed FCC ID Label Format 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.: WTX20X10077660W Page 5 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn EXHIBIT 3 - EUT INTERNAL PHOTOGRAPHS EUT Housing and Board View 1 Solder Board-Component View 1 Reference No.: WTX20X10077660W Page 6 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn Solder Board-Component View 2 Solder Board-Component View 3 Reference No.: WTX20X10077660W Page 7 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn Solder Board-Component View 4 Solder Board-Component View 5 Reference No.: WTX20X10077660W Page 8 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn Solder Board-Component View 6 Solder Board-Component View 7 Reference No.: WTX20X10077660W Page 9 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn Antenna View

1. MAXIMUM PERMISSIBLE EXPOSURE (MPE) 1.1 General Information Client Information Applicant: Hangzhou Sky-Lighting CO., Ltd. Address of applicant: No.161 North Star-Bridge Road. Linping. Hangzhou. Zhejiang. 311100 China Manufacturer: Hangzhou Sky-Lighting CO., Ltd. Address of manufacturer: No.161 North Star-Bridge Road. Linping. Hangzhou. Zhejiang. 311100 China General Description of EUT: Product Name: LED LAMP Trade Name: SKYING Model No.: DSB11-AD4 E12 WIFITYW Adding Model(s): BW424, BW224 FCC ID: 2AVJP-DSB114WT20BK Rated Voltage: AC 120V /60Hz Firmware Version: 1.0.5 Hardware Version: 102 Technical Characteristics of EUT: Support Standards: 802.11b, 802.11g, 802.11n Frequency Range: 2412-2462MHz for 802.11b/g/n-HT20 2422-2452MHz for 802.11n-HT40 RF Output Power: 16.68dBm (Conducted) Type of Modulation: DBPSK,BPSK,DQPSK,QPSK,16QAM,64QAM Data Rate: 1-11Mbps, 6-54Mbps, up to 150Mbps Quantity of Channels: 11 for 802.11b/g/n-HT20 7 for 802.11n-HT40 Channel Separation: 5MHz Type of Antenna: Integral Antenna Antenna Gain: 4.6dBi 1.2 Standard Applicable According to §1.1307(b)(1) and KDB 447498 D01 General RF Exposure Guidance v06, 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. (a) Limits for Occupational / Controlled Exposure Frequency range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times | E | 2 , | H | 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842/f 4.89/f (900/f)* 6 30-300 61.4 0.163 1.0 6 300-1500 / / F/300 6 1500-100000 / / 5 6 (b) Limits for General Population / Uncontrolled Exposure Frequency range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times | E | 2 , | H | 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 / / F/1500 30 1500-100000 / / 1 30 Note: f = frequency in MHz: * = Plane-wave equivalents power density 1.3 MPE Calculation Method S = (30*P*G) / (377*R 2 ) S = power density (in appropriate units, e.g., mw/cm 2 ) P = power input to the antenna (in appropriate units, e.g., mw) G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor is normally numeric gain. R = distance to the center of radiation of the antenna (in appropriate units, e.g., cm) 1.4 MPE Calculation Result Maximum Tune-Up output power: 17(dBm) Maximum peak output power at antenna input terminal: 50.12(mW) Prediction distance: >20(cm) Prediction frequency: 2437 (MHz) Antenna gain: 4.6(dBi) Directional gain (numeric gain): 2.88 The worst case is power density at prediction frequency at 20cm: 0.0287(mw/cm 2 ) MPE limit for general population exposure at prediction frequency: 1 (mw/cm 2 ) Result: Pass

Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn Page 1 of 62 TEST REPORT Reference No. .................... : WTX20X10077660W FCC ID ................................ : 2AVJP-DSB114WT20BK Applicant ........................... : Hangzhou Sky-Lighting CO., Ltd. Address.............................. : No.161 North Star-Bridge Road. Linping. Hangzhou. Zhejiang. 311100 China Product Name ................... : LED LAMP Test Model. ........................ : DSB11-AD4 E12 WIFITYW Standards .......................... : FCC Part 15.247 Date of Receipt sample .... : Oct.23, 2020 Date of Test........................ : Oct.23, 2020 to Oct.30, 2020 Date of Issue ..................... : Oct.30, 2020 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 compiler and 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 Tested by: Reviewed By: Approved & Authorized By: Jack Huang / Project Engineer Lion Cai / RF Manager Silin Chen / Manager Reference No.: WTX20X10077660W Page 2 of 62 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn 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 ............................................................................................. 15 7.1 STANDAR…

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Reference No.: WTX20X10077660W Page 10 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn EXHIBIT 4 - TEST SETUP PHOTOGRAPHS Conducted Emission Test Setup Radiation Emission Test Setup (Below 30MHz) Reference No.: WTX20X10077660W Page 11 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn Radiation Emission Test Setup (30MHz to 1GHz) Radiation Emission Test Setup (1GHz to 18GHz) Reference No.: WTX20X10077660W Page 12 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn Radiation Emission Test Setup (Above 18GHz) ***** END OF REPORT *****