2AZSG-NV-06797WEIGHT SCALE-WITH APP AND WIRELESS CONNECTION

本资料为芯海科技专有财产，非经许可，不得复制、翻印或转变其他形式使用。 This document is exclusive property of CHIPSEA and shall not be reproduced or copied or transformed to any other format without prior permission of CHIPSEA 聚点滴之芯 ． 成浩瀚之海 1/8 文件编号： CST92P23B用户手册 REV 1.0 本资料为芯海科技专有财产，非经许可，不得复制、翻印或转变其他形式使用。 This document is exclusive property of CHIPSEA and shall not be reproduced or copied or transformed to any other format without prior permission of CHIPSEA 聚点滴之芯 ． 成浩瀚之海 2/8 文件编号： 版本历史 历史版本 修改内容 版本日期 REV1.0 初始版本 2020/05/25 本资料为芯海科技专有财产，非经许可，不得复制、翻印或转变其他形式使用。 This document is exclusive property of CHIPSEA and shall not be reproduced or copied or transformed to any other format without prior permission of CHIPSEA 聚点滴之芯 ． 成浩瀚之海 3/8 文件编号： 目 录 版本历史 ................................................................................................................................................................... 2 目 录 ........................................................................................................................................................................ 3 1 产品概述 ............................................................................................................................................................... 4 1.1 功能描述 ....................................................................................................................................................... 4 1.2 主要特性 ....................................................................................................................................................... 4 1.3 PIN配置 ........................................................................................................................................................ 5 2 电气特性 ............................................................................................................................................................... 6 2.1 极限值 ........................................................................................................................................................... 6 2.2 直流特性 ....................................................................................................................................................... 6 2.3 功耗特性 ....................................................................................................................................................... 6 2.4 RF发送特性.................................................................................................................................................. 6 3 封装图 ................................................................................................................................................................... 7 4 典型应用原理图 ................................................................................................................................................... 8 本资料为芯海科技专有财产，非经许可，不得复制、翻印或转变其他形式使用。 This document is exclusive property of CHIPSEA and shall not be reproduced or copied or transformed to any other format without prior permission of CHIPSEA 聚点滴之芯 ． 成浩瀚之海 4/8 文件编号： 1 产品概述 1.1 功能描述 CST92P23B是一款低功耗、低成本、高集成度的RF无线发射芯片，片上集成发射机、GFSK调制解 调器、RF基带等。该芯片采用SOP8封装，可实现单向广播信号发射。芯片外围电路简单，搭配低成本 MCU和少量外围被动器件，即可实现RF信号广播发送。 1.2 主要特性 2.4G收发器  单端RFIO  GFSK调制解调  支持1Mbps、250kbps数据传输速率  发射功率-30~12dBm 主机接口  3线SPI通信，最快传输速率达8Mbps 振荡器  支持16M XTAL，片内集成可调负载电容 CMOS技术  工作电压范围 — VIN 1.9V~3.6V  工作温度范围 — -40~85°C 功耗  发射状态：17mA@0dBm output power  PowerDown状态：1.5uA 封装  SOP8 应用领域  智能广播电子秤  遥控器 本资料为芯海科技专有财产，非经许可，不得复制、翻印或转变其他形式使用。 This document is exclusive property of CHIPSEA and shall not be reproduced or copied or transformed to any other format without prior permission of CHIPSEA 聚点滴之芯 ． 成浩瀚之海 5/8 文件编号： 1.3 PIN配置 图 1 CST92P23B-SOP8 pin脚示意图 表 1管脚说明 管脚名称 输入/输出 管脚序号 描述 SDA I/O 1 SPI从机数据输入、输出 VDD P 2 电源输入，1.9~3.6V XTAL_O O 3 16MHz晶振输出 XTAL_I I 4 16MHz晶振输入 RF RF Port 5 ANT port GND P 6 GND CSN I 7 SPI片选信号 SCK I 8 SPI时钟信号 本资料为芯海科技专有财产，非经许可，不得复制、翻印或转变其他形式使用。 This document is exclusive property of CHIPSEA and shall not be reproduced or copied or transformed to any other format without prior permission of CHIPSEA 聚点滴之芯 ． 成浩瀚之海 6/8 文件编号： 2 电气特性 2.1 极限值 表 2 CST92P23B极限值 参数 范围 单位 电源VDD -0.3~3.6 V 引脚输入电压 -0.3~3.6 V 工作温度 -40~+85 ºC 存贮温度 -40~+125 ºC 焊接温度，时间 220ºC，10s 2.2 直流特性 表 3 直流特性 符号 参数 最小值 典型值 最大值 单位 VDD 工作电源 1.9 3.3 3.6 V VIH 数字输入高电平 0.7VDD - 3.6 V VIL 数字输入低电平 0 - 0.3VDD V VOH 数字输出高电平 VIN-0.3 - VIN+0.3 V VOL 数字输出低电平 0 - 0.3 V 2.3 功耗特性 表 4 功耗特性 参数 最小值 典型值 最大值 单位 PowerDown状态（通过SPI命令唤醒） 1.5 uA 发射状态（0dBm output power） 17 mA 2.4 RF发送特性 表 5 RF发送特性 符号 参数 最小值 典型值 最大值 单位 P TX RF输出功率 -30 0 12 dBm Freq 频率范围 2400 2482 MHz 本资料为芯海科技专有财产，非经许可，不得复制、翻印或转变其他形式使用。 This document is exclusive property of CHIPSEA and shall not be reproduced or copied or transformed to any other format without prior permission of CHIPSEA 聚点滴之芯 ． 成浩瀚之海 7/8 文件编号： 3 封装图 图 2 SOP8封装图 本资料为芯海科技专有财产，非经许可，不得复制、翻印或转变其他形式使用。 This document is exclusive property of CHIPSEA and shall not be reproduced or copied or transformed to any other format without prior permission of CHIPSEA 聚点滴之芯 ． 成浩瀚之海 8/8 文件编号： 4 典型应用原理图 图 3 CST92P23B-SOP8典型应用原理图

C5266091_X8_Ed.1 Letter of Authorization MAX SALES GROUP. Company: MAX SALES GROUP. Address: 15240 East Nelson Ave.City of Industry, CA 91744 Product Name: WEIGHT SCALE-WITH APP AND WIRELESS CONNECTION Model Number: NV-06797 FCC Identifier: 2AZSG-NV-06797 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: TARVN KHIANI Date: Apr.28.2021 Title: purchase manager Signature of applicant: 1/1

C5266091_X10_Ed.2 MAX SALES GROUP. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: Apr.28.2021 Subject: Request for Confidentiality FCC ID: 2AZSG-NV-06797 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. 1/1 C5266091_X10_Ed.2 Sincerely, Signature: Name: TARVN KHIANI Title: purchase manager 1/1

External Photos        FCC ID: 2AZSG-NV-06797              

Model: NV-06797 FCC ID: 2AZSG-NV-06797 Label Location

Internal Photos FCC ID: 2AZSG-NV-06797 ANT CSU8RP1198B

Shenzhen CTB Testing Co., Ltd. FCC ID: 2AZSG-NV-06797 Portable device According to §15.247(e)(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. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]·[√f(GHZ)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where: • f(GHZ) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. BLE: Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.402-0.6140.870±1 1.001.26<50.390233.00YES 2.44-0.8370.820±11.001.26<50.393303.00YES 2.480-1.2010.76-1±10.001.00<50.314963.00 YES GFSK Conclusion: For the max result : 0. 39330≤ FCC Limit 3.0 for 1g SAR.

Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB210325026RFX TEST REPORT Compiled by: Reviewed by: Approved by: Arron Liu Bin Mei Rita Xiao / Director The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. Product Name: WEIGHT SCALE-WITH APP AND WIRELESS CONNECTION FCC ID: 2AZSG-NV-06797 Trademark: N/A Model Number: NV-06797 Prepared For: Max Sales Group Address: 15240 East Nelson Ave.City of Industry, CA 91744 US Manufacturer: Power Modern Electronics (HK) Co., Ltd Address: Rm 3121, No. 222 Tiangao Lane,Shounan street, Yinzhou district, Ningbo, Zhejiang, China Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: Floor 1&2, Building A, No. 26 of Xinhe Road, Xinqiao Street, Baoan District, Shenzhen, China Sample Received Date: Mar. 24, 2021 Sample tested Date: Mar. 25, 2021 to Mar. 30, 2021 Issue Date: Mar. 30, 2021 Report No.: CTB210325026RFX Test Standards FCC Part15.247 ANSI C63.10:2013 Test Results PASS Remark: This is Bluetooth radio test report. Report Tel: 4008-707-283Web: http://www.ctb-lab.netPage 1 of 34 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB210325026RFX TABLE OF CONTENT Test Report Declaration Page 1. VERSION ...................................................................................................... 4 2. TEST SUMMARY ........................................................................................... 5 3. MEASUREMENT UNCERTAINTY .................................................................. 6 4. PRODUCT INFORMATION AND TEST SETUP ............................................... 7 4.1 Product Information ............................................................................................. 7 4.2 Test Setup Configuration ..................................................................................... 7 4.3 Support Equipment .............................................................................................. 7 4.4 Channel List ........................................................................................................ 8 4.5 Test Mode ........................................................................................................... 8 4.6 Test Environment ................................................................................................ 8 5. TEST FACILITY AND TEST INSTRUMENT USED .......................................... 9 5.1 Test Facility ......................................................................................................... 9 5.2 Test Instrument Used .......................................................................................... 9 6. AC POWER LINE CONDUCTED EMISSION ................................................... 11 6.1 Block Diagram Of Test Setup ............................................................................ 11 6.2 Limit ................................................................................................................... 11 6.3 Test procedure .................................................................................................. 11 6.4 Test Result ........................................................................................................ 13 7. RADIATED SPURIOUS EMISSION............................................................... 14 7.1 Block Diagram Of Test Setup ............................................................................ 14 7.2 Limit ................................................................................................................... 14 7.3 Test procedure .................................................................................................. 15 7.4 Test Result ........................................................................................................ 16 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS ................... 23 8.1 Block Diagram Of Test Setup ............................................................................ 23 8.2 Limit ................................................................................................................... 23 8.3 Test procedure .................................................................................................. 23 8.4 Test Result ........................................................................................................ 24 9. COUDUCTED PEAK OUTPUT POWER ........................................................ 26 9.1 Block Diagram Of Test Setup ............................................................................ 26 Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 34 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB210325026RFX 9.2 Limit ................................................................................................................... 26 9.3 Test procedure .................................................................................................. 26 9.4 Test Result ........................................................................................................ 27 10. 6DB OCCUPIED BANDWIDTH ..................................................................... 29 10.1 Block Diagram Of Test Setup .......................................................................... 29 10.2 Limit ................................................................................................................. 29 10.3 Test procedure ................................................................................................ 29 10.4 Test Result ...................................................................................................... 29 11. POWER SPECTRAL DENSITY ..........................................…

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Radiated Emission Below 1G Above 1G FCC ID: 2AZSG-NV -06797