2A4HK-DI-158D-BL3 in 1 charging station

Shanxilinkedianzikejiyouxiangongsi Add: wankelanshan2qi10haolou2danyuan202shi hepingnanlu, wanbolinqu taiyuanshi China Date: 2022-3-1 FCC ID: 2A4HK-DI-158D-BL Dear Sir/Madam, We, Shanxilinkedianzikejiyouxiangongsi Hereby declares the following statement for Federal Communications Commission, PCB board, circuit, structure and internal of these model(s) are the same, Only model number is different for these model: Product name: 3 in 1 Charging Station Model no.: DI-158D-BL, DI-158D-RG, DI-158D-SG, DI-158D-SL, DI-158D-DB,DI-158D-L, DI-158D-G, DI-158D-PR, DI-158D-WH,DI-158D-GR, DI-158D-PK, DI-158DCP Sincerely, Name/Title： Rui Zhang/Manager Company: Shanxilinkedianzikejiyouxiangongsi Address: wankelanshan2qi10haolou2danyuan202shi hepingnanlu, wanbolinqu taiyuanshi China Phone: 18734140887 Fax: N/A E-Mail: [email protected]

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 Date:<2022-3-1> 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 2A4HK-DI-158D-BL DI-158D-BL 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： Rui Zhang/Manager Company: Shanxilinkedianzikejiyouxiangongsi Address: wankelanshan2qi10haolou2danyuan202shi hepingnanlu, wanbolinqu taiyuanshi China Phone: 18734140887 Fax: N/A E-Mail: [email protected]

Shanxilinkedianzikejiyouxiangongsi wankelanshan2qi10haolou2danyuan202shi hepingnanlu, wanbolinqu taiyuanshi China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2022-3-1 To whom it may concern: We, Shanxilinkedianzikejiyouxiangongsi the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2A4HK-DI-158D-BL 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： Rui Zhang/Manager Company: Shanxilinkedianzikejiyouxiangongsi Address: wankelanshan2qi10haolou2danyuan202shi hepingnanlu, wanbolinqu taiyuanshi China Phone: 18734140887 Fax: N/A E-Mail: [email protected]

Appendix EUT External Photographs Photo 1 Appearance of EUT Photo 2 Appearance of EUT Photo 3 Appearance of EUT Photo 4 Appearance of EUT Photo 5 Appearance of EUT Photo 6 Appearance of EUT Photo 7 Appearance of EUT Photo 8 Appearance of EUT

Appendix FCC ID Label Size for the label: 10mm X 8mm FCCID : 2A4HK-DI-158D-BL Appendix ID Label Location ID LOCATION

Appendix EUT Internal Photographs Photo 9 Internal of EUT Photo 10 Appearance of PCB Coil Antenna Photo 11 Appearance of PCB

Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202202-0062-31 Page: 1 of 5 TB-RF-074-1.0 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Fax: +86 75526509195 RF Exposure Evaluation FCC ID: 2A4HK-DI-158D-BL 1. Client Information Applicant : Shanxilinkedianzikejiyouxiangongsi Address : wankelanshan2qi10haolou2danyuan202shi hepingnanlu, wanbolinqu taiyuanshi shanxisheng, China Manufacturer : Shanxilinkedianzikejiyouxiangongsi Address : wankelanshan2qi10haolou2danyuan202shi hepingnanlu, wanbolinqu taiyuanshi shanxisheng, China 2. General Description of EUT EUT Name : 3 in 1 Charging Station Model(s) : DI-158D-BL, DI-158D-RG, DI-158D-SG, DI-158D-SL, DI-158D-DB, DI-158D-L, DI-158D-G, DI-158D-PR, DI-158D-WH, DI-158D-GR, DI-158D-PK, DI-158DCP Sample ID : 202202-0061_01-01-5 Model Difference : All PCB boards and circuit diagrams are the same, color and model are different, the internal structure is the same. Product Description : Operation Frequency: 300KHz-350KHz Modulation Type: ASK Antenna: Coil Antenna Power Supply : For Adapter: Input: AC 100-240V~ 50/60Hz Output: DC 5V, 2.1A-3A Phone: DC 5V, 2A (Max) Watch: DC5V, 500mA (Max) Earphone:5V, 500mA (Max) Wireless Charging: 2.5W(Max) Software Version : V1.0 Hardware Version : V1.2 Connecting I/O Port(S) : : Please refer to the User's Manual Accessories : Apple Watch Note: More test information about the EUT please refer the RF Test Report. Report No.: TBR-C-202202-0062-31 Page: 2 of 5 TB-RF-074-1.0 RF Exposure Considerations 1. Measuring Standard KDB 680106 D01 RF Exposure Wireless Charging App v03. 2. Requirements According to the item 5.2 of KDB 680106 D01v03: Inductive wireless power transfer applications that meet all of the following requirements are excluded from submitting an RF exposure evaluation: (1) Power transfer frequency is less than 1 MHz. (2) Output power from each primary coil is less than or equal to 15 watts. (3) The system may consist of more than one source primary coils, charging one or more clients. If more than one primary coil is present, the coil pairs may be powered on at the same time. (4) Client device is placed directly in contact with the transmitter. (5) Mobile exposure conditions only (portable exposure conditions are not covered by this exclusion). (6) The aggregate H-field strengths anywhere at or beyond 15 cm surrounding the device, and 20 cm away from the surface from all coils that by design can simultaneously transmit, and while those coils are simultaneously energized, are demonstrated to be less than 50% of the applicable MPE limit. Limits For Maximum Permissible Exposure (MPE) Report No.: TBR-C-202202-0062-31 Page: 3 of 5 TB-RF-074-1.0 3. Test Setup Note: The aggregate H-field strengths at 15 cm surrounding the device and 20 cm above the top surface. 4.Test Procedure 1) The RF exposure test was performed in anechoic chamber. 2) The aggregate H-field strengths at 15 cm surrounding the device and 20 cm above the top surface. 3) The highest emission level was recorded and compared with limit as soon as measurement of each points (A, B, C, D, E) were completed. 4) The EUT was measured according to the dictates of KDB 680106 D01 v03. Remark: The EUT’s test position A, B, C, D and E is valid for the E and H field measurements. 5. Test Equipment List Equipment Manufacturer Model No. Serial No. Last Cal. Cal. Due Date Magnetic field meter NARDA ELT-400 EE030 Sep. 10, 2021 Sep. 09, 2022 6. Deviation From Test Standard No deviation 7. Mode of operation during the test / Test peripherals used Test Modes: TM1 AC/DC Adapter + EUT + Mobile Phone (Battery Status: <1%) record TM2 AC/DC Adapter + EUT + Mobile Phone (Battery Status: <50%) record TM3 AC/DC Adapter + EUT + Mobile Phone (Battery Status: <99%) record 15cm Report No.: TBR-C-202202-0062-31 Page: 4 of 5 TB-RF-074-1.0 8. Test Result E-Filed Strength at 15 cm from the edges surrounding the EUT and 15 cm above the top surface Charging Battery Level Frequency Range (MHz) Measured E-Field Strength Values (V/m) E-Field Strength 50% Limits (V/m) E-Field Strength Limits (V/m) Test Position A B C D E 1% 0.324 42.612 43.348 61.462 43.745 47.127 307.0 614.0 50% 0.324 46.741 42.967 49.381 47.128 42.975 307.0 614.0 99% 0.324 61.073 49.374 42.962 34.671 41.842 307.0 614.0 Note: V/m= A/m *377 H-Filed Strength at 15 cm from the edges surrounding the EUT and 15 cm above the top surface Charging Battery Level unit Frequenc y Range (MHz) Measured H-Field Strength Values (A/m) H-Field Strength 50% Limits (A/m) H-Field Strength Limits (A/m) Test Position A B C D E 1% uT 0.324 0.1411 0.1432 0.2036 0.142 0.1562 -- -- 1% A/m 0.324 0.112 0.115 0.169 0.117 0.124 0.815 1.63 50% uT 0.324 0.153 0.1423 0.1632 0.1558 0.1424 -- -- 50% A/m 0.324 0.124 0.114 0.133 0.123 0.112 0.815 1.63 99% uT 0.324 0.2024 0.1632 0.1424 0.1151 0.1387 -- -- 99% A/m 0.324 0.163 0.131 0.113 0.091 0.111 0.815 1.63 H-Field Strength at 20cm from the top surface of the EUT Charging Battery Level Unit Frequency Range (MHz) Measured H-Field Strength Values (A/m) FCC H-Field Strength 50% Limits (A/m) FCC H-Field Strength Limits (A/m) Test Position E 1% uT 0.324 0.1341 -- -- 1% A/m 0.324 0.102 0.815 1.63 50% uT 0.324 0.1225 -- -- 50% A/m 0.324 0.092 0.815 1.63 99% uT 0.324 0.1371 -- -- 99% A/m 0.324 0.12 0.815 1.63 Note: A/m=uT/1.25 9. Test Set-up Photo Report No.: TBR-C-202202-0062-31 Page: 5 of 5 TB-RF-074-1.0 Test Set-up Photo -----END OF REPORT-----

Appendix EUT Test Photographs 15C Test Setup Photo of Setup for Radiated Emission (9KHz-30MHz) Photo of Setup for Radiated Emission (Below 1 GHz) Photo of Setup for Conducted Emission -----END OF REPORT-----