2ARMK-ADMA03DRechargeable Indoor 43 inch LCD Signage with Wheels

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Rechargeable Indoor 43 inch LCD Signage with Wheels ADMA03D 3.4 Certain settings required before playback 3.4.1 Language : English is the default language set in factory, you can choose to select Simple Chinese or Japanese as you want by pressing �� 勺A +志 • nmer s1ra1egy File Management EJE, ;1 3.4.2 Work mode: ＿ ·信中文' ·-�"' ....... ..... , 如,..... 内mo Langua ge page 令 拿· 餐斗<>t there are two major categories of work mode : network and stand-alone - Network : It means to upload programs to the device by the network, which is divided into w1red{LAN), wireless(wifi) according to the upload path used. - Stand alone : It means to upload programs to device by USB manually. You should click Work Mode and select "Single" and you have to activate USB on System Setting page at the same time, t hen the device will recognized USB storage and upload the program inside when USB inserted into USB port. O沁er On/Off . nmerSt『呻 斤le Managemem 口Exil Content M>nagemem GTVO Cootent Storage Internal Memo ry 0 Machine Number 73818176 0 i3818176 73818176 System control page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

GUANGZHOU YOUGUANG OPTOELECTRONICS CO., LTD. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date:2021-06-24 Subject; Request for Long Term Confidentiality FCC ID: 2ARMK-ADMA03D 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 Parts List Operational Description Tune-up Procedure 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. Sincerely, Signature: Name: CHUNG MING LIU Title: General manager

GUANGZHOU YOUGUANG OPTOELECTRONICS CO., LTD. Agent Authorization Company: GUANGZHOU YOUGUANG OPTOELECTRONICS CO., LTD. Address: No. 75, Pacific Ind. Zone, Xingtang Town, Zengcheng, Guangzhou, 511340 China Product Name: Rechargeable Indoor 43 inch LCD Signage with Wheels Model Number(s): ADMA03D Product Description: Rechargeable Indoor 43 inch LCD Signage with Wheels We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2021-06-24 Name: CHUNG MING LIU Title: General manager Company: GUANGZHOU YOUGUANG OPTOELECTRONICS CO., LTD.

Page 1 of 5 Appendix B: Photographs of EUT Product: Rechargeable Indoor 43 inch LCD Signage with Wheels Model: ADMA03D External Photos Page 2 of 5 Page 3 of 5 Page 4 of 5 Page 5 of 5

Label Artwork and Location Model: ADMA03D Label: Size: L*W=70*35mm Rechargeable Indoor 43 inch LCD Signage with Wheels Model: ADMA03D FCC ID: 2ARMK-ADMA03D 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. Location

Page 1 of 8 Appendix B: Photographs of EUT Product: Rechargeable Indoor 43 inch LCD Signage with Wheels Model: ADMA03D Internal Photos Page 2 of 8 Antenna Page 3 of 8 Page 4 of 8 Page 5 of 8 Page 6 of 8 Page 7 of 8 Page 8 of 8

Maximum Permissible Exposure Applicable Standard According to §1.1307(b), systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. Remark: 1) For BT: The maximum output power for antenna is 5.77dBm (3.78mW) at 2402MHz, 5dBi antenna gain(with 3.16 numeric antenna gain.) For WIFI: The maximum output power for antenna is 10.85dBm (12.16mW) at 2437MHz, 5dBi antenna gain(with 3.16 numeric antenna gain.) 2) For mobile or fixed location transmitters, no SAR consideration applied. The minimum separation generally be used is at least 20cm, even if the calculation indicate that the MPE distance would be lesser. For BT: Maximum Permissible Exposure output power= 3.78mW Numeric Antenna gain= 3.16 Substituting the MPE safe distance using d=20cm into above equation. Yields: S=0.000199*P*G Where P=Power in mW G=Numeric antenna gain S=Power density in mW/cm 2 Power density= 0.002377mW/cm 2 For WIFI: Maximum Permissible Exposure output power= 12.16mW Numeric Antenna gain= 3.16 Substituting the MPE safe distance using d=20cm into above equation. Yields: S=0.000199*P*G Where P=Power in mW G=Numeric antenna gain S=Power density in mW/cm 2 Power density= 0.007647mW/cm 2 (For mobile or fixed location transmitters, the maximum power density is 1.0 mW/cm 2 even if the calculation indicates that the power density would be larger.)

Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TEST REPORT FCC ID. ............................ : 2ARMK-ADMA03D Test Report No. ............... : TCT210604E006 Date of issue ................... : Jun. 22, 2021 Testing laboratory .......... : SHENZHEN TONGCE TESTING LAB Testing location/ address: TCT Testing Industrial Park Fuqiao 5th Industrial Zone, Fuhai Street, Bao'an District Shenzhen, Guangdong, 518103, People's Republic of China Applicant's name ............ : GUANGZHOU YOUGUANG OPTOELECTRONICS CO., LTD. Address ........................... : No. 75, Pacific Ind. Zone, Xingtang Town, Zengcheng, Guangzhou, 511340 China Manufacturer's name ... : GUANGZHOU YOUGUANG OPTOELECTRONICS CO., LTD. Address ........................... : No. 75, Pacific Ind. Zone, Xingtang Town, Zengcheng, Guangzhou, 511340 China Standard(s) ..................... : FCC CFR Title 47 Part 15 Subpart C Section 15.247 FCC KDB 558074 D01 15.247 Meas Guidance v05r02 ANSI C63.10:2013 Test item description ..... : Rechargeable Indoor 43 inch LCD Signage with Wheels Trade Mark ...................... : N/A Model/Type reference..... : ADMA03D Rating(s).......................... : AC/DC Adapter Model: XVE126-2520500 AC/DC Adapter Input: AC 100-240V, 50/60Hz, 2.5A MAX AC/DC Adapter Output: DC 25.2V, 5.0A, 126.0W Li-ion Battery: DC 22.2V, 31A, 668Wh Date of receipt of test item ......................................... : Jun. 04, 2021 Date (s) of performance of test ................................... : See dates for each test case Tested by (+signature) ... : Rleo Check by (+signature) .... : Beryl Zhao Approved by (+signature): Tomsin General disclaimer: This report shall not be reproduced except in full, without the written approval of SHENZHEN TONGCE TESTING LAB. This document may be altered or revised by SHENZHEN TONGCE TESTING LAB personnel only, and shall be noted in the revision section of the document. The test results in the report only apply to the tested sample. Report No.: TCT210604E006 Page 2 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Table of Contents 1. General Product Information .................................................................. 3 1.1. EUT description ..................................................................................................... 3 1.2. Model(s) list ............................................................................................................ 3 1.3. Operation Frequency ............................................................................................ 3 2. Test Result Summary .............................................................................. 4 3. General Information ................................................................................. 5 3.1. Test environment and mode ................................................................................. 5 3.2. Description of Support Units ................................................................................ 5 4. Facilities and Accreditations .................................................................. 6 4.1. Facilities ................................................................................................................. 6 4.2. Location ................................................................................................................. 6 4.3. Measurement Uncertainty ..................................................................................... 6 5. Test Results and Measurement Data ..................................................... 7 5.1. Antenna requirement ............................................................................................ 7 5.2. Conducted Emission ............................................................................................. 8 5.3. Conducted Output Power ................................................................................... 12 5.4. 20dB Occupy Bandwidth .................................................................................... 17 5.5. Carrier Frequencies Separation ......................................................................... 22 5.6. Hopping Channel Number .................................................................................. 27 5.7. Dwell Time ............................................................................................................ 30 5.8. Pseudorandom Frequency Hopping Sequence ................................................ 35 5.9. Conducted Band Edge Measurement ................................................................ 36 5.10.Conducted Spurious Emission Measurement .................................................. 40 5.11.Radiated Spurious Emission Measurement ..................................................... 44 Appendix A: Photographs of Test Setup Appendix B: Photographs of EUT Report No.: TCT210604E006 Page 3 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 1. General Product Information 1.1. EUT description Test item description ........... : Rechargeable Indoor 43 inch LCD Signage with Wheels Model/Type reference........... : ADMA03D Sample Number....................: TCT210604E006-0101 Bluetooth Version ................ : V4.2 Operation Frequency ........... : 2402MHz~2480MHz Transfer Rate ........................ : 1/2/3 Mbits/s Number of Channel .............. : 79 Modulation Type ................... : GFSK, π/4-DQPSK, 8DPSK Modulation Technology ....... : FHSS Antenna Type ........................ : Integral Antenna Antenna Gain ........................ : 5dBi Rating(s)................................ : AC/DC Adapter Model: XVE126-2520500 AC/DC Adapter Input: AC 100-240V, 50/60Hz, 2.5A MAX AC/DC Adapter Output: DC 25.2V, 5.0A, 126.0W Li-ion Battery: DC 22.2V, 31A, 668Wh Remark .................................. : / Note: The antenna gain listed in this report is pro…

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Report No.: TCT210604E006 Page 58 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Appendix B: Photographs of EUT Product: Rechargeable Indoor 43 inch LCD Signage with Wheels Model: ADMA03D External Photos Report No.: TCT210604E006 Page 59 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT210604E006 Page 60 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT210604E006 Page 61 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT210604E006 Page 62 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT210604E006 Page 63 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Product: Rechargeable Indoor 43 inch LCD Signage with Wheels Model: ADMA03D Internal Photos Report No.: TCT210604E006 Page 64 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT210604E006 Page 65 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT210604E006 Page 66 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT210604E006 Page 67 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT210604E006 Page 68 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT210604E006 Page 69 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT210604E006 Page 70 of 70 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com *****END OF REPORT*****

Page 1 of 2 Appendix A: Photographs of Test Setup Product: Rechargeable Indoor 43 inch LCD Signage with Wheels Model: ADMA03D Radiated Emission Page 2 of 2 Conducted Emission