2A7JR-KW818vibration plate

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. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help.

YONGKANG KEWANG INDUSTRY & TRADE CO., LTD Model Difference Product Name: vibration plate Model Number: KW818, KW560, KW561, KW521, KW618, KW616, KW816, KW520, KW8001, KW557, KW665, KW550, KW808, KW819, KW558, KW559 FCC Identifier: 2A7JR-KW818 All the models are the same circuit and RF module, except the model name and outlook color. Regards Sincerely Client’s signature Client’s name / title: Snake Zhang / Manager Contact information: NO.916 KEYUAN ROAD, YONGKANG ECONOMIC DEVELOPMENT DISTRICT, YONGKANG, ZHEJIANG, CHINA

YONGKANG KEWANG INDUSTRY & TRADE CO., LTD 1/1 Letter of Authorization Company: YONGKANG KEWANG INDUSTRY & TRADE CO., LTD Address: NO.916 KEYUAN ROAD, YONGKANG ECONOMIC DEVELOPMENT DISTRICT, YONGKANG, ZHEJIANG, CHINA Product Name: vibration plate Model Number: KW818, KW560, KW561, KW521, KW618, KW616, KW816, KW520, KW8001, KW557, KW665, KW550, KW808, KW819, KW558, KW559 FCC Identifier: 2A7JR-KW818 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: Snake Zhang Date: 2022-06-27 Title: Manager Signature of applicant:

YONGKANG KEWANG INDUSTRY & TRADE CO., LTD 1/1 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2022-06-27 Subject: Request for Confidentiality FCC ID: 2A7JR-KW818 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 No ☐ Internal Photos No ☐ 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. 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. Sincerely, Signature: Name: Snake Zhang Title: Manager

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Size:12*8mm MODEL: KW818 FCC ID: 2A7JR-KW818 Label location

EUT PHOTO(Internal Photos) ANT ※※※※※ END OF REPORT ※※※※※

Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20220615006E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 1 of 36 FCC Part 15C Test Report FCC ID: 2A7JR-KW818 Applicant: YONGKANG KEWANG INDUSTRY & TRADE CO., LTD Address: NO.916 KEYUAN ROAD, YONGKANG ECONOMIC DEVELOPMENT DISTRICT, YONGKANG, ZHEJIANG, CHINA Manufacturer: YONGKANG KEWANG INDUSTRY & TRADE CO., LTD Address: NO.916 KEYUAN ROAD, YONGKANG ECONOMIC DEVELOPMENT DISTRICT, YONGKANG, ZHEJIANG, CHINA EUT: vibration plate Trade Mark: N/A Model Number: KW818, KW560, KW561, KW521, KW618, KW616, KW816, KW520, KW8001, KW557, KW665, KW550, KW808, KW819, KW558, KW559 Date of Receipt: Jun. 06, 2022 Test Date: Jun. 06, 2022 - Jun. 17, 2022 Date of Report: Jun. 17, 2022 Prepared By: Shenzhen DL Testing Technology Co., Ltd. Address: 101-201, Building C, Shuanghuan, No.8, Baoqing Road, Baolong Industrial Zone, Baolong Street, Longgang District, Shenzhen, Guangdong, China Applicable Standards: FCC PART 15 C 15.249 ANSI C63.10:2013 Test Result: Pass Report Number: DL-20220615006E Prepared (Test Engineer): Alisa Song Reviewer (Supervisor): Jack Bu Approved (Manager): Jade Yang This test report is based on a single evaluation of one sample of above mentioned products. It is not permitted to be duplicated in extracts without written approval of Shenzhen DL Testing Technology Co., Ltd. Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20220615006E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 2 of 36 Table of Contents Page 1 . SUMMARY OF TEST RESULTS 4 1.1 MEASUREMENT UNCERTAINTY 4 2 . GENERAL INFORMATION 5 2.1 GENERAL DESCRIPTION OF EUT 5 2.2 DESCRIPTION OF TEST MODES 6 2.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 7 2.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 7 2.5 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 7 2.6 EQUIPMENTS LIST FOR ALL TEST ITEMS 8 3 . EMC EMISSION TEST 9 3.1 CONDUCTED EMISSION MEASUREMENT 9 3.1.1 POWER LINE CONDUCTED EMISSION LIMITS 9 3.1.2 TEST PROCEDURE 9 3.1.3 DEVIATION FROM TEST STANDARD 9 3.1.4 TEST SETUP 10 3.1.5 EUT OPERATING CONDITIONS 10 3.1.6 TEST RESULTS 10 3.2 RADIATED EMISSION MEASUREMENT 13 3.2.1 RADIATED EMISSION LIMITS 13 3.2.2 TEST PROCEDURE 14 3.2.3 DEVIATION FROM TEST STANDARD 14 3.2.4 TEST SETUP 14 3.2.5 EUT OPERATING CONDITIONS 15 3.2.6 TEST RESULTS (BETWEEN 9KHZ – 30 MHZ) 16 3.2.7 TEST RESULTS (BETWEEN 30MHZ – 1GHZ) 17 3.2.8 TEST RESULTS (1GHZ~25GHZ) 19 3.3 RADIATED BAND EMISSION MEASUREMENT 21 3.3.1 TEST REQUIREMENT: 21 3.3.2 TEST PROCEDURE 21 3.3.3 DEVIATION FROM TEST STANDARD 21 3.3.4 TEST SETUP 22 3.3.5 EUT OPERATING CONDITIONS 22 4 . BANDWIDTH TEST 25 4.1 APPLIED PROCEDURES / LIMIT 25 4.1.1 TEST PROCEDURE 25 4.1.2 DEVIATION FROM STANDARD 25 4.1.3 TEST SETUP 25 Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20220615006E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 3 of 36 Table of Contents Page 4.1.4 EUT OPERATION CONDITIONS 25 4.1.5 TEST RESULTS 26 5 . ANTENNA REQUIREMENT 28 5.1 STANDARD REQUIREMENT 28 5.2 EUT ANTENNA 28 6 . TEST SEUUP PHOTO 29 7 . EUT PHOTO 31 Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20220615006E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 4 of 36 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.249) , Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS 15.205(a) 15.209(a) 15.249(a) 15.249(c) Fundamental &Radiated Spurious Emission Measurement PASS 15.249(d) Band Edge Emission PASS 15.215(c) 20dB Bandwidth PASS 15.203 Antenna Requirement PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report 1.1 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 Conducted Emission Test ±2.56dB 2 RF power,conducted ±0.42dB 3 Spurious emissions,conducted ±2.76dB 4 All emissions,radiated(<1G) ±3.65dB 5 All emissions,radiated(>1G) ±4.89dB 6 Temperature ±0.5°C 7 Humidity ±2% Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20220615006E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 5 of 36 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF EUT Product Name: vibration plate Trademark N/A Model No.: KW818, KW560, KW561, KW521, KW618, KW616, KW816, KW520, KW8001, KW557, KW665, KW550, KW808, KW819, KW558, KW559 Model Difference All samples are the same except the model name and appearance color, so we prepare " KW818" for test only. Operation Frequency: 2402~2480MHz Channel numbers: 79 Channels Channel separation: 1M Modulation technology: GFSK, PI/4 DQPSK Antenna Type: Internal Antenna Antenna gain: 0 dBi Power supply: 120V~ 50/60Hz Note: 1.For a more detailed features description, please refer to the manufacturer’s specifications or the User's Manual. 2.The EUT’s all information provided by client. Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20220615006E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 6 of 36 3. Channel List Channel Frequency (MHz) Channel Frequency (MHz) Channel Frequency (MHz) 00 2402 27 2429 54 2456 01 2403 28 2430 55 2457 02 2404 29 2431 56 2458 03 2405 30 2432 57 2459 04 2406 31 2433 58 2460 05 2407 32 2434 59 2461 06 2408 33 2435 60 2462 07 2409 34 2436 61 2463 08 2410 35 2437 62 2464 09 2411 36 2438 63 2465 10 2412 37 2439 64 2466 11 2413 38 2440 65 2467 12 2414 39 2441 66 2468 13 2415 40 2442 67 2469 14 2416 41 2443 68 2470 15 2417 42 2444 69 2471 16 2418 43 2445 70 2472 17 2419 44 2446 71 2473 18 2420 45 2447 72 2474 19 2421 46 2448 73 2475 20 2422 47 2449 74 2476 21 2423 48 2450 75 2477 22 2424 49 2451 76 2478 23 2425 50 2452 77 2479 24 2426 51 2453 78 2480 25 2427 52 2454 26 2428 53 2455 2.2 DESCRIPTION …

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EUT TEST PHOTO