FCC ID: 2AOAA-B-2PLUS 2.4GHz Wireless System

System Overview 32blt/ 44.lkHz HI-Ras sound qulty Super Low Lallncy: < 5ms Ra,ge: ;;:: 60 feet Line-0-sile Operating2.4GHz ISM Worwide Dynlc108 ouldoors dB Since the 8-2 PWS is a 2.4GHz wielsysb)m, seavoid placing lqulpmenlcommend1atyouIns1eB-2USTransmldt 3 mete10fl)awn RF transme.Wi-Fi routers. the transmitmr and othe ce:theenvironment is full of RFnsmitters, sommesB-2PLswillmeet interference. b couldcheck 2.4GHz environment on smart phone&appllons:

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C5266091_X10_Ed.1 Cherub Technology Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 11/2/2020 Subject: Request for Confidentiality FCC ID: 2AOAA-B-2PLUS 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. Long-Term Confidentiality Short-Term Confidentiality Exhibits ID Label/Location Attestation Statement External Photos Block Diagram Schematics Test Report Test Setup Photos Users Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) SDR Software / Security Info No No No No No No No No No No No 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: Yanjun Meng Title: Technical director Date: 11/2/2020 1/1

C5266091_X8_Ed.1 Letter of Authorization Company: Cherub Technology Co., Ltd Address: Room507, Block 1, Nanhai E-Cool, No. 6 Xinghua Road, Shekou, Nanshan District, Shenzhen City, Guangdong Province, China, 518067 Product Name: 2.4GHz Wireless System Model Number: B-2 PLUS FCC Identifier: 2AOAA-B-2PLUS 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: Yanjun Meng Date: 11/2/2020 Title: Technical director Signature of applicant:

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