2A4P2DT15NNYNAroma Diffuser

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CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 Date: 2022/2/26 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 requests confidentiality for the following products: FCC ID Model name 2A4P2DT15NNYN DT15nnYN For the product stated above, we request that the following information be held confidential; Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days External Photos Internal Photos Block Diagram Schematics Test Setup Photos User’s Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely, Name/Title： CHEN HUI / Certification Contact Company: Shenzhen Dituo Electronic Co., Ltd. Address: Floor 1 to Floor 3, No.372, Floor 1, No.376, Donghuan Road, Huangpu Community, Xinqiao Street, Baoan, Shenzhen, Guangdong, China Phone: 86 15889312153 Fax: / E-Mail: [email protected]

Shenzhen Dituo Electronic Co., Ltd. Floor 1 to Floor 3, No.372, Floor 1, No.376, Donghuan Road, Huangpu Community, Xinqiao Street, Baoan, Shenzhen, Guangdong,China Date: 2022/2/26 FCC ID: 2A4P2DT15NNYN Model Number: DT15nnYN To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD To Whom It May Concern, We, Shenzhen Dituo Electronic Co., Ltd., declare that this EUT (FCC ID: 2A4P2DT15NNYN) doesn’t have Ad Hoc mode function on “non-US/Canada frequencies”. In addition. The frequency selection feature is disabled by firmware for devices marked to the US/Canada. For DTS part of this device, only channels 1-11 will be used in North America, Country code selection is disabled. Should you have any questions or comments regarding this matter, please have my best attention. Sincerely, Name/Title： CHEN HUI / Certification Contact Company: Shenzhen Dituo Electronic Co., Ltd. Address: Floor 1 to Floor 3, No.372, Floor 1, No.376, Donghuan Road, Huangpu Community, Xinqiao Street, Baoan, Shenzhen, Guangdong, China Phone: 86 15889312153 Fax: / E-Mail: [email protected]

Shenzhen Dituo Electronic Co., Ltd. Floor 1 to Floor 3, No.372, Floor 1, No.376, Donghuan Road, Huangpu Community, Xinqiao Street, Baoan, Shenzhen, Guangdong,China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2022/2/26 To whom it may concern: We, Shenzhen Dituo Electronic Co., Ltd. the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2A4P2DT15NNYN including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely, Name/Title： CHEN HUI / Certification Contact Company: Shenzhen Dituo Electronic Co., Ltd. Address: Floor 1 to Floor 3, No.372, Floor 1, No.376, Donghuan Road, Huangpu Community, Xinqiao Street, Baoan, Shenzhen, Guangdong, China Phone: 86 15889312153 Fax: / E-Mail: [email protected]

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 4 EXTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 4 Fig.3 Fig.4 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 4 Fig.5 Fig.6 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 4 of 4 Fig.7 Fig.8

Label Location: FCC ID: 2A4P2DT15NNYN 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.

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 3 INTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 3 Fig.3 Fig.4 WIFI antenna Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 3 Fig.5 Fig.6

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 6 Maximum Permissible Exposure Report Product Information EUT : Aroma Diffuser Model Number : DT15nnYN Model Declaration : N/A Test Model : DT15nnYN Power Supply : DC24V by Charger Hardware version : GEM-ZB 122 Software version : V1.0 Sample ID : TZ220202948–1#& TZ220202948–2# WiFi WLAN : Supported IEEE 802.11a/b/g/n WLAN FCC Operation Frequency : IEEE 802.11b:2412-2462MHz IEEE 802.11g:2412-2462MHz IEEE 802.11n HT20:2412-2462MHz IEEE 802.11n HT40:2422-2452MHz WLAN Channel Number : 11 Channels for 2412-2462MHz(IEEE 802.11b/g/n HT20) 7 Channels for 2422-2452MHz(IEEE 802.11n HT40) WLAN Modulation Technology : IEEE 802.11b: DSSS(CCK,DQPSK,DBPSK) IEEE 802.11g: OFDM (64QAM, 16QAM, QPSK, BPSK) IEEE 802.11n: OFDM (64QAM, 16QAM, QPSK, BPSK) Antenna Type And Gain : Internal Antenna Wlan2.4G: 0.0 dBi(Max.) Note: Antenna position refer to EUT Photos. 2. Evaluation Method Systems operating under the provisions of FCC 47 CFR section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as mobile device whereby a distance of 0.2m normally can be maintained between the user and the device, and below RF Permissible Exposure limit shall comply with. In accordance with KDB447498D01 for Simultaneous transmission MPE test exclusion applies when the sum of the MPE ratios for all simultaneous transmitting antennas incorporated in a host device, based on the calculated/estimated, numerically modelled or measured field strengths or power density, is ≤ 1.0. The MPE ratio of each antenna is determined at the minimum test separation distance required by the operating configurations and exposure conditions of the host device, according to the ratio of field strengths or power density to MPE limit, at the test frequency. Either the maximum peak or spatially averaged results from measurements or numerical simulations may be used to determine the MPE ratios. Spatial averaging does not apply when MPE is estimated using simple calculations based on far-field plane-wave equivalent conditions. The antenna installation and operating requirements for the host device must meet the minimum test separation distances required by all antennas, in both standalone and simultaneous transmission operations, to satisfy compliance. Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 6 3. Limit 3. 1 Refer evaluation method ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. FCC KDB publication 447498 D01 General 1 RF Exposure Guidance v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies. FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits. FCC CFR 47 part2 2.1091: Radiofrequency radiation exposure evaluation: mobile devices 3. 2 Limit Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 1842/f 61.4 / / 1.63 4.89/f 0.163 / / (100) * (900/f 2 )* 1.0 f/300 5 6 6 6 6 6 Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 824/f 27.5 / / 1.63 2.19/f 0.073 / / (100) * (180/f 2 )* 0.2 f/1500 1.0 30 30 30 30 30 F=frequency in MHz *=Plane-wave equivalent power density 4. MPE Calculation Method Predication of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna 5. Antenna Information This Product can only use antennas certificated as follows provided by manufacturer; Antenna Gain and type refer to Product information Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 6 6. Conducted Power 2.4G Band: WiFi 2.4GHz Band TestMode Antenna Channel Result[dBm] 11B Ant1 2412 13.44 2437 13.31 2462 13.16 11G Ant1 2412 9.22 2437 9.11 2462 8.86 11N20SISO Ant1 2412 11.13 2437 11.37 2462 11.37 11N40SISO Ant1 2422 10.90 2437 11.18 2452 10.79 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 4 of 6 7. Manufacturing Tolerance WiFi 2.4GHz Band – Antenna 1 IEEE 802.11b(Average) Channel Channel 1 Channel 6 Channel 11 Target (dBm) 12.5 12.5 12.5 Tolerance ±(dB) 1.0 1.0 1.0 IEEE 802.11g (Average) Channel Channel 1 Channel 6 Channel 11 Target (dBm) 8.5 8.5 8.0 Tolerance ±(dB) 1.0 1.0 1.0 IEEE 802.11n HT20 (Average) Channel Channel 1 Channel 6 Channel 11 Target (dBm) 10.5 10.5 10.5 Tolerance ±(dB) 1.0 1.0 1.0 IEEE 802.11n HT40 (Average) Channel Channel 3 Channel 6 Channel 9 Target (dBm) 10.0 10.5 10.0 Tolerance ±(dB) 1.0 1.0 1.0 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 5 of 6 8. Measurement Results 8.1 Standalone MPE As declared by the Applica…

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Report No.: TZ220202948-E Page 1 of 68 FCC TEST REPORT Test report On Behalf of Shenzhen Dituo Electronic Co., Ltd. For Aroma Diffuser Model No.: DT15nnYN FCC ID: 2A4P2DT15NNYN Prepared for : Shenzhen Dituo Electronic Co., Ltd. Floor 1 to Floor 3, No.372, Floor 1, No.376, Donghuan Road, Huangpu Community, Xinqiao Street, Baoan, Shenzhen, Guangdong,China Prepared By : Shenzhen Tongzhou Testing Co.,Ltd 1th Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Date of Test: 2022/2/18 ~ 2022/2/24 Date of Report: 2022/2/24 Report Number: TZ220202948-E The test report apply only to the specific sample(s) tested under stated test conditions It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: TZ220202948-E Page 2 of 68 TEST RESULT CERTIFICATION Applicant’s name ................. : Shenzhen Dituo Electronic Co., Ltd. Address .................................. : Floor 1 to Floor 3, No.372, Floor 1, No.376, Donghuan Road, Huangpu Community, Xinqiao Street, Baoan, Shenzhen, Guangdong,China Manufacture's Name ............ : Shenzhen Dituo Electronic Co., Ltd. Address .................................. : Floor 1 to Floor 3, No.372, Floor 1, No.376, Donghuan Road, Huangpu Community, Xinqiao Street, Baoan, Shenzhen, Guangdong,China Product description Trade Mark ................................ : N/A Product name ............................ : Aroma Diffuser Model and/or type reference : DT15nnYN Standards.............................. : FCC Rules and Regulations Part 15 Subpart C Section 15.247 ANSI C63.10: 2013 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Tongzhou Testing Co.,Ltd is acknowledged as copyright owner and source of the material. Shenzhen Tongzhou Testing Co.,Ltd takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test ........................................... : Date (s) of performance of tests ............. : 2022/2/18 ~ 2022/2/24 Date of Issue .......................................... : 2022/2/24 Test Result .............................................. : Pass Testing Engineer : (Anna Hu) Technical Manager : (Hugo Chen) Authorized Signatory : (Andy Zhang) Report No.: TZ220202948-E Page 3 of 68 Revision History Revision Issue Date Revisions Revised By 000 2022/2/24 Initial Issue Andy Zhang Report No.: TZ220202948-E Page 4 of 68 TABLE OF CONTENTS 1. GENERAL INFORMATION ................................................................................................................................... 5 1.1. DESCRIPTION OF DEVICE (EUT) ........................................................................................................................ 5 1.2 EUT CONFIGURATION .......................................................................................................................................... 6 1.3. EXTERNAL I/O CABLE ......................................................................................................................................... 6 1.4. DESCRIPTION OF TEST FACILITY ........................................................................................................................ 6 1.5. STATEMENT OF THE MEASUREMENT UNCERTAINTY .......................................................................................... 6 1.6. MEASUREMENT UNCERTAINTY ........................................................................................................................... 6 1.7. DESCRIPTION OF TEST MODES .......................................................................................................................... 7 2. TEST METHODOLOGY ......................................................................................................................................... 8 2.1. EUT CONFIGURATION......................................................................................................................................... 8 2.2. EUT EXERCISE ................................................................................................................................................... 8 2.3. GENERAL TEST PROCEDURES ........................................................................................................................... 8 3. SYSTEM TEST CONFIGURATION ...................................................................................................................... 9 3.1. JUSTIFICATION..................................................................................................................................................... 9 3.2. EUT EXERCISE SOFTWARE ................................................................................................................................ 9 3.3. SPECIAL ACCESSORIES ...................................................................................................................................... 9 3.4. BLOCK DIAGRAM/SCHEMATICS........................................................................................................................... 9 3.5. EQUIPMENT MODIFICATIONS .............................................................................................................................. 9 3.6. TEST SETUP ........................................................................................................................................................ 9 4. SUMMARY OF TEST RESULTS ........................................................................................................................ 10 5. TEST RESULT ....................................................................................................................................................... 11 5.1. ON TIME AND DUTY CYCLE ...................................…

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Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 2 TEST SETUP PHOTOS OF THE EUT Conducted Emission Radiated Emission Below 1GHz Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A4P2DT15NNYN This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 2 Radiated Emission Above 1GHz