2ARMK-CHR03D27-Inch LCD Charging Station

GUANGZHOU YOUGUANG OPTOELECTRONICS CO., LTD. Model Difference Product description:27-Inch LCD Charging Station Model name:CHR03D,CHR03S, CHR03 Trade Name: N/A FCC ID:2ARMK-CHR03D All the model are the same circuit and RF module, only for model name. Regards Sincerely Client’s signature: Client’s name / title : CHUNG MING LIU(General manager) Contact information / address: No.75, Pacific Ind. Zone, Xingtang Town, Zengcheng,Guangzhou,511340 China

C5266091_X8_Ed.1 1/1 Letter of Authorization GUANGZHOU YOUGUANG OPTOELECTRONICS CO., LTD. Company: GUANGZHOU YOUGUANG OPTOELECTRONICS CO., LTD. Address: No.75, Pacific Ind. Zone, Xingtang Town, Zengcheng,Guangzhou,511340 China Product Name:27-Inch LCD Charging Station Model Number:CHR03D,CHR03S, CHR03 FCC Identifier:2ARMK-CHR03D We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: CHUNG MING LIU Date: 2022.03.17 Title: General manager Signature of applicant:

C5266091_X10_Ed.2 1/1 GUANGZHOU YOUGUANG OPTOELECTRONICS CO., LTD. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2022.03. 17 Subject: Request for Confidentiality FCC ID: 2ARMK-CHR03D To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☐ Internal Photos ☐ NOTE 1 ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of ______ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name: CHUNG MING LIU Title: General manager

External Photos

Model:CHR03D FCC ID:2ARMK-CHR03D Label Location

Internal Photos ANT

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2ARMK-CHR03D Applied procedures / limit According to FCC §15.247(i) and §1.1307(b)(1), systems operating under the provisions of this 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. 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 Time |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 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz 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 Time |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 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 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,R=20cm Test Result of RF Exposure Evaluation BT+WIFI supported simultaneous transmission: BT+2.4GWIFI: ∑MPE Ratio =0.0015811+0.0039715 =0.0055526≤1, So passed. Modes& Channel Freq. (MHz) Tune up Produce power Maximu m peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW / cm2 ) Result EDR GFSK& HCH 4±1 5 3.1623 2.5119 (4dBi) 0.0015811 1 Pass 2.4G WIFI 802.11b& MCH 8±1 9 7.9433 2.5119 (4dBi) 0.0039715 1 Pass

Radiated Emission Below 1G Above 1G Conducted emissions