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2A9LN-YJBT001lntellingent stand

Dongguan Hecheng Furniture Co., Ltd.
lntellingent stand - FCC ID 2A9LN-YJBT001 - Dongguan Hecheng Furniture Co., Ltd.
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Application Details

Equipment Class
8CC - Part 18 Consumer Device
Date of Grant
Dec 08, 2022
Application Purpose
Original Equipment
Date of Application
Dec 08, 2022
Equipment Note
lntellingent stand
Frequency Range
0.11200000 - 0.20500000
Company
Dongguan Hecheng Furniture Co., Ltd.
Country
China

Documents & Files

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Users Manual

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Cover Letter(s)

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External Photos

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ID Label/Location Info

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Internal Photos

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RF Exposure Info

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Test Report

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Test Setup Photos

Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Users Manual

This product may cause interference to radio equipment and should not be installed near maritime safety communications equipment or other critical navigation or communication equipment operating between 0.45-30 MHz. 1. After plugging in the adapter, if all functions do not work, you need to replace the adapter 2. After plugging in the adapter, if the lights and USB ports work, the wireless charging does not work, you need to replace the circuit board 3.After plugging in the adapter, if the lights and wireless charging are working, the USB ports do not work, you need to replace the USB parts

Cover Letter(s)

Dongguan Hecheng Furniture Co., Ltd. Agent Authorization Company: Dongguan Hecheng Furniture Co., Ltd. Address: Banhu Village, North Third Street 2, Huangjiang Town, Dongguan, Guangdong, China Product Name: lntellingent stand Model Number(s): YJBT001, YJBT002, YJ-G-001, YJ-G-002, YJ-G-003 Product Description: lntellingent stand 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: Dec. 07, 2022 Name: Bo Liu Title: Manager Company: Dongguan Hecheng Furniture Co., Ltd.

Cover Letter(s)

Dongguan Hecheng Furniture Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Dec. 07, 2022 Subject; Request for Confidentiality FCC ID: 2A9LN-YJBT001 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 In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. 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: Bo Liu Title: Manager

Cover Letter(s)

Dongguan Hecheng Furniture Co., Ltd. Model Difference Declaration To Whom It May Concern, We, Dongguan Hecheng Furniture Co., Ltd. (lntellingent stand) ; Model Number: YJBT001, YJBT002, YJ-G-001, YJ-G-002, YJ-G-003; All model’s the function, software and electric circuit are the same, only with appearance, product color and model named different. Test sample model: YJBT001. Please contact me if you have any question. Signature: Date: Dec. 07, 2022 Name: Bo Liu Title: Manager

External Photos

Annex A External Photos Model No.: YJBT001 Page 1 of 4 Model No.: YJBT001 Page 2 of 4 Model No.: YJBT001 Page 3 of 4 Model No.: YJBT001 Page 4 of 4

ID Label/Location Info

FCC ID LABEL: Ca. 20mm x 30mm label location FCC ID: 2A9LN-YJBT001

Internal Photos

Annex B Internal Photo Model No.: YJBT001 Page 1 of 3 Antenna Model No.: YJBT001 Page 2 of 3 Model No.: YJBT001 Page 3 of 3

RF Exposure Info

Page 1 of 10 Report No.: HK2208253788-2E FCC TEST REPORT Test report On Behalf of Dongguan Hecheng Furniture Co., Ltd. For lntellingent stand Model No.: YJBT001, YJBT002, YJ-G-001, YJ-G-002, YJ-G-003 FCC ID: 2A9LN-YJBT001 Prepared For : Dongguan Hecheng Furniture Co., Ltd. Banhu Village, North Third Street 2, Huangjiang Town, Dongguan, Guangdong, China Prepared By : Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Aug. 25, 2022 ~ Nov. 25, 2022 Date of Report: Nov. 25, 2022 Report Number: HK2208253788-2E Page 2 of 10 Report No.: HK2208253788-2E Note: 1. For a more detailed features description, please refer to the manufacturer’s specifications or the User's Manual. 2. Channel List Channel Frequency (KHz) Channel Frequency (MHz) Channel Frequency (MHz) Channel Frequency (MHz) 01 135 The EUT antenna is Coil Antenna. No antenna other than that furnished by the responsible party shall be used with the device. 2. SUMMARY OF TEST RESULTS 2.1. Test procedures according to the technical standards: FCC KDB680106 D01 RF Exposure Wireless Charging Apps v03r01 FCC CFR 47 Standard Section Test Item Judgment Remark FCC CFR 47 part1, 1.1310 KDB680106 D01v03r01 (3)(3) Electric Field Strength (E) (V/m) PASS Magnetic Field Strength (H) (A/m) PASS 2.2. Measurement Uncertainty The reported uncertainty of measurement y ±U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 All emissions, radiated(<30M)(9KHz-30MHz) ±3.90dB 2 Temperature ±0.5°C 3 Humidity ±2% Page 3 of 10 Report No.: HK2208253788-2E 2.3. Test Instruments Description Brand Model No. Frequency Range Calibrated Date Calibrated Until Exposure Level Te s t e r narda ELT-400 N-0231 Feb. 18, 2022 Feb. 17, 2023 Magnetic field probe 100cm 2 narda ELT probe 100cm2 M0675 Feb. 18, 2022 Feb. 17, 2023 NOTE: 1. The calibration interval of the above test instruments is 12 months. Page 4 of 10 Report No.: HK2208253788-2E 3. MAXIMUM PERMISSIBLE EXPOSURE Limit of Maximum Permissible Exposure Limits for Occupational / Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm²) 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 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/ cm²) 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 30 Note 1: f = frequency in MHz ; *Plane-wave equivalent power density. Note 2: For the applicable limit, see FCC 1.1310, 680106 D01 RF Exposure Wireless Charging Apps v03. Note 3: Emissions between 100 kHz to 300 kHz should be assessed versus the limits at 300 kHz in Table 1 of Section 1.1310: 614 V/m and 1.63A/m. A KDB inquiry is required to determine the applicable exposure limits below 100 kHz. Page 5 of 10 Report No.: HK2208253788-2E 4. TEST PROCEDURE a. For devices designed for typical desktop applications, such a wireless charging pads, RF exposure evaluation should be conducted assuming a user separation distance of (H-field & E- field strengths for all sides is 15cm, H-field strengths of top side is 20cm). E and H field strength measurements or numerical modeling may be used to demonstrate compliance. Measurements should be made from all sides and the top of the primary/client pair, with the 15 cm measured from the center of the probe(s) to the edge of the device. 4.1 Test Setup 4.2 Result Of Maximum Permissible Exposure Page 6 of 10 Report No.: HK2208253788-2E All test modes are tested, and the report shows only the worst mode: ANT: 15W H-Field Strength at 15 cm (E top side: 20cm) from the edges surrounding the EUT (A/m) Field strength Test Position A Test Position B Test Position C Test Position D Test Position E Limits (A/m) uT 0.205 0.531 0.697 0.773 1.059 / A/m 0.164 0.425 0.558 0.618 0.847 1.63 Note. Calculation: A/m=uT/1.25 For Half Load mode: H-Field Strength at 15 cm (E top side: 20cm) from the edges surrounding the EUT (A/m) Field strength Test Position A Test Position B Test Position C Test Position D Test Position E Limits (A/m) uT 0.294 0.512 0.828 0.883 1.005 / A/m 0.235 0.410 0.662 0.706 0.804 1.63 Note. Calculation: A/m=uT/1.25 For No load mode: H-Field Strength at 15 cm (E top side: 20cm) from the edges surrounding the EUT (A/m) Field strength Test Position A Test Position B Test Position C Test Position D Test Position E Limits (A/m) uT 0.327 0.612 0.747 0.835 1.069 / A/m 0.2 0.374 0.440 0.474 0.62 1.63 Note. Calculation: A/m=uT/1.25 Page 7 of 10 Report No.: HK2208253788-2E Remark: According KDB 680106 D01 RF Exposure Wireless Charging App v03r01, section 5, b). The aggregate H-field strengths at 15 cm surrounding the device and 20 cm above the top surface from all simultaneous transmitting coils are demonstrated to be less than 50% of the MPE limit. The E- field evaluation conducted assuming a user separation distance of 15 cm according to the KDB 680106 D01 RF Exposure Wireless Charging App v03 section 3, c). Result: The device comply with the RF exposure requirement according to 680106 D01 v03r01, section 5, b): (1) The operating frequency is 112KHz~205KHz, is less than 1MHz. (2) The max Output power for each primary coil is 15W ≤ 15W. (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) The aggregate H-field strengths at 15 cm s…

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Test Report

Page 1 of 20 Report No.: HK2208253788-1E FCC TEST REPORT Test report On Behalf of Dongguan Hecheng Furniture Co., Ltd. For lntellingent stand Model No.: YJBT001, YJBT002, YJ-G-001, YJ-G-002, YJ-G-003 FCC ID: 2A9LN-YJBT001 Prepared For : Dongguan Hecheng Furniture Co., Ltd. Banhu Village, North Third Street 2, Huangjiang Town, Dongguan, Guangdong, China Prepared By : Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Aug. 25, 2022 ~ Nov. 25, 2022 Date of Report: Nov. 25, 2022 Report Number: HK2208253788-1E Page 2 of 20 Report No.: HK2208253788-1E TEST RESULT CERTIFICATION Applicant’s name ................. : Dongguan Hecheng Furniture Co., Ltd. Address .................................. : Banhu Village, North Third Street 2, Huangjiang Town, Dongguan, Guangdong, China Manufacture's Name ............ : Dongguan Hecheng Furniture Co., Ltd. Address .................................. : Banhu Village, North Third Street 2, Huangjiang Town, Dongguan, Guangdong, China Product description Trade Mark: N/A Product name ............................ : lntellingent stand Model and/or type reference : YJBT001, YJBT002, YJ-G-001, YJ-G-002, YJ-G-003 Standards .............................. : FCC CFR 47 PART 18 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology 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 ............. : Aug. 25, 2022 ~ Nov. 25, 2022 Date of Issue .......................................... : Nov. 25, 2022 Test Result .............................................. : Pass Testing Engineer : (Gary Qian) Technical Manager : (Eden Hu) Authorized Signatory : (Jason Zhou) Page 3 of 20 Report No.: HK2208253788-1E Table of Contents Page 1 . TEST SUMMARY 5 1.1 . Test Procedures And Results 5 1.2 . Information of the Test Laboratory 5 1.3 . Measurement Uncertainty 5 2. GENERAL INFORMATION 6 2.1. General Description of EUT 6 2.2. Carrier Frequency of Channels 7 2.3. Operation of EUT during testing 7 2.4. Description of Test Setup 7 2.5. Measurement Instruments List 8 3. CONDUCTED EMISSION TEST 9 3.1. Block Diagram of Test Setup 9 3.2. Conducted Power Line Emission Limit 9 3.3. Test Procedure 9 4. RADIATED EMISSIONS 12 4.1. Block Diagram of Test Setup 12 4.2. Rules and specifications 13 4.3. Test Procedure 13 4.4. Test Result 13 5. ANTENNA REQUIREMENT 17 6. PHOTOGRAPH OF TEST 18 7. PHOTOS OF THE EUT 20 Page 4 of 20 Report No.: HK2208253788-1E ** Modified History ** Revision Description Issued Data Remark Revision 1.0 Initial Test Report Release Nov. 25, 2022 Jason Zhou Page 5 of 20 Report No.: HK2208253788-1E 1. TEST SUMMARY 1.1. Test Procedures And Results DESCRIPTION OF TEST SECTION NUMBERRESULT CONDUCTED EMISSIONS TEST 18.307(c) COMPLIANT RADIATED EMISSION TEST 18.305(c) COMPLIANT Note: 1. PASS: Test item meets the requirement. 2. Fail: Test item does not meet the requirement. 3. N/A: Test case does not apply to the test object. 4. The test result judgment is decided by the limit of test standard. 1.2. Information of the Test Laboratory Shenzhen HUAK Testing Technology Co., Ltd. Add.: 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Testing Laboratory Authorization: A2LA Accreditation Code is 4781.01. FCC Designation Number is CN1229. Canada IC CAB identifier is CN0045. CNAS Registration Number is L9589. 1.3. Measurement Uncertainty Measurement Uncertainty Conducted Emission Expanded Uncertainty =2.71dB, k=2 Radiated emission expanded uncertainty(9kHz-30MHz) = 3.90dB, k=2 Radiated emission expanded uncertainty(30MHz-1000MHz)= 3.90dB, k=2 Radiated emission expanded uncertainty(Above 1GHz) = 4.28dB, k=2 Page 6 of 20 Report No.: HK2208253788-1E 2. GENERAL INFORMATION 2.1. General Description of EUT Equipment: lntellingent stand Model Name: YJBT001 Series Models: YJBT002, YJ-G-001, YJ-G-002, YJ-G-003 Model Difference: All model’s the function, software and electric circuit are the same, only with appearance, product color and model named different. Test sample model: YJBT001. Trade Mark: N/A FCC ID: 2A9LN-YJBT001 Antenna Type: Coil Antenna Antenna Gain: 0dBi Operation frequency: 112KHz~205KHz Test frequency: 135KHz Number of Channels: 1 Modulation Type: ASK Power Source: DC 12V 1.5A from Adapter with AC100-240V 50/60Hz, 0.45A Wlreless Output(Phone): 15W/10W/7.5W Power Rating: DC 12V 1.5A from Adapter with AC100-240V 50/60Hz, 0.45A Wlreless Output(Phone): 15W/10W/7.5W Page 7 of 20 Report No.: HK2208253788-1E 2.2. Carrier Frequency of Channels Operation Frequency each of channel Channel Frequency 1 135KHz 2.3. Operation of EUT during testing Operating Mode The mode is used: Transmitting+lighting mode 2.4. Description of Test Setup Operation of EUT during testing: AC Plug Adapter information Model:MN018G-L120150 Input: AC100-240V, 50-60Hz, 0.45A Max Output: DC12V 1.5A The sample was placed (0.1m (30MHz~1GHz), 0.1m (9KHz~30MHz)) above the ground plane of 3m chamber. Measurements in both horizontal and vertical polarities were performed. During the test, each emission was maximized by: having the EUT continuously working, investigated all operating modes, rotated about all 3 axis (X, Y & Z) and considered typical configuration to obtain worst position, manipulating interconnecting cables, rotating the turntable, varying antenna height from 1m to 4m in both horizontal and vertical polarizations. The emissions worst-case are shown in Test Results of the following pages. The worst case is…

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Contact Information

Applicant

Bo Liu(Manager)
[email protected]13316680601Fax: 13316680601

Technical Contact

Dongguan Hecheng Furniture Co., Ltd.
[email protected]

China

Test Firm

Shenzhen HUAK Testing Technology Co., Ltd.Jason Zhou
[email protected]86-755-23029901

Technical Specifications

#Rule PartsFrequency RangePower Output
1180.112 MHz - 0.205 MHz-
Confidentiality
Long Term