2AXSOXJ-B1ABluetooth module

1/16 XJ-B1A Module Series B1A BLEmesh Standard Module (PCB Antenna) XJ-B1A series of low-power Bluetooth module is a high-performance Bluetooth module which is developed based on the Telink low-power Bluetooth SOC TLSR8250 chip. The module adopts the stamp-type and side plug-in interfaces, is exquisite and compact, is fully lead out via ports and convenient to use, and helps the users omit the complicated RF hardware design, development and production links. Therefore, the users can easily realize the development of Bluetooth application programs on that basis, shorten the R&D cycle, and seize the market opportunities. This model is a pure hardware module that excludes any software. If you need the edition with software, please notify in advance. Product Characteristics ·Working Frequency Band - Working frequency band: 2402-2480MHz ·Ultra-low Power Consumption - Support 2.7V-3.6V power supply - Emission current: ≤20mA (10dBm power configuration) - Receiving current: ≤7.5mA (overall current) - Sleep current: 400nA (SRAM not saving) ·High-link Budget - Sensitivity-96dBm±1dBm (1Mbps, PER<30.8%) - Emission power: Max.1.391dBm ·Memory Resources - Internal 512kB Flash (the capacity that the client can actually use is less than 512kB) - 48kB on-chip SRAM, wherein 32kB can sleep and save ·Compatibility - Designed interface mode with side plug-in and stamp holes compatible ·Mesh Functions - Support BLE - Support the Bluetooth SIG Mesh - Support the exclusive Mesh of Telink ·Communication Interface - 2 PWM / 4 GPIO / 1 UART（Pin multiplexing） 让生活更简单 | www.xiaojiang.cc 2/16 Thanks for choosing XiaoJiang products. Please read through this Manual before using the products. By using the products, you have understood and accept the terms and instructions in this Manual. Ningbo Xiaojiang IoT Technology Co.，Ltd reserves all legal rights to revise and explain the terms and information provided, without prior notices. Ningbo Xiaojiang IoT Technology Co.，Ltd provides this document to support the product design of users. Users should design their products according to the specifications and parameters provided in the document.XiaoJiang shall not bear any liability for personal injury or property loss caused by improper operation of users. XiaoJiang has the right to update the document without notice. The copyright of this document belongs to XiaoJiang . Any person who reproduces and copy this document without permission of our company will bear legal responsibility. Copyright © Ningbo Xiaojiang IoT Technology Co. ，Ltd reserves all rights. 让生活更简单 | www.xiaojiang.cc 3/16 ORIGINAL EQUIPMENT MANUFACTURER (OEM) NOTES The OEM must certify the final end product to comply with unintentional radiators (FCC Sections 15.107 and 15.109) before declaring compliance of the final product to Part 15 of the FCC rules and regulations. Integration into devices that are directly or indirectly connected to AC lines must add with Class II Permissive Change. The OEM must comply with the FCC labeling requirements. If the module’s label is not visible when installed, then an additional permanent label must be applied on the outside of the finished product which states: “Contains transmitter module FCC ID: ZAXSOXJ-B1A ”. Additionally, the following statement should be included on the label and in the final product’s user manual: “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 interferences, and(2)this device must accept any interference received, including interference that may cause undesired operation.” The module is limited to installation in mobile or fixed applications. Separate approval is required for all other operating configurations, including portable configuration with respect to Part 2.1093 and different antenna configurations. A module or modules can only be used without additional authorizations if they have been tested and granted under the same intended end‐use operational conditions, including simultaneous transmission operations. When they have not been tested and granted in this manner, additional testing and/or FCC application filing may be required. The most straightforward approach to address additional testing conditions is to have the grantee responsible for the certification of at least one of the modules submit a permissive change application. When having a module grantee file a permissive change is not practical or feasible, the following guidance provides some additional options for host manufacturers. Integrations using modules where additional testing and/or FCC application filing(s) may be required are: (A) a module used in devices requiring additional RF exposure compliance information (e.g., MPE evaluation or SAR testing); (B) limited and/or split modules not meeting all of the module requirements; and (C) simultaneous transmissions for independent collocated transmitters not previously granted together. This Module is full modular approval, it is limited to OEM installation ONLY. Integration into devices that are directly or indirectly connected to AC lines must add with Class II Permissive Change. (OEM) Integrator has to assure compliance of the entire end product incluld the integrated Module. Additional measurements (15B) and/or equipment authorizations (e.g Verification) may need to be addressed depending on co-location or simultaneous transmission issues if applicable. 让生活更简单 | www.xiaojiang.cc 4/16 (OEM) Integrator is reminded to assure that these installation instructions will not be made available to the end user of the final host device. 让生活更简单 | www.xiaojiang.cc 5/16 CONTENTS 1 Specifications & Parameters .................................................................................................................. 6 2 Dimensional Drawing and Pin Definitions ........................................................................................... 6 2.1 Dimensional Drawing ..............…

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Rev 11/20/07 (Ningbo XiaojiangIoT Technology Co Ltd) Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AXSOXJ-B1A Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name Block Diagram, Schematics, Operational Description Block Diagram.pdf, Schematics.pdf, Operation Description .pdf The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below: Short-term confidentiality requested: 180 days Exhibit Type File Name Internal Photos, Test Setup Photos Internal Photos.pdf, Test Setup Photos.pdf Sincerely, Jizongchen/Manager Ningbo XiaojiangIoT Technology Co Ltd

Z:\2020\Xiaojiang(小匠)\EN201210009W(ES201210076W) ( XJ‐B1A)\2.Technical Document\Timco\Modular‐Approval‐Letter.docx MODULAR APPROVAL LETTER FCC ID: 2AXSOXJ-B1A Modular Approval Requirement Yes No (i) The radio elements of the modular transmitter must have their own shielding. The physical crystal and tuning capacitors may be located external to the shielded radio elements. YES The modular transmitter have its own RF shielding (ii) The modular transmitter musthave buffered modulation/data inputs(if such inputs are provided) to ensurethat the module will comply with part 15 requirements under conditions of excessivedata rates or over-modulation. YES The modular accord with Part 15 requirements (iii) The modular transmitter musthave its own power supply regulation. YES The modularIt has its own power supply regulation (iv) The modular transmitter mustcomply with the antenna and transmissionsystem requirements of§§ 15.203, 15.204(b) and 15.204(c). The antennamust either be permanently attachedor employ a ‘‘unique’’ antennacoupler (at all connections between themodule and the antenna, including thecable). The ‘‘professional installation’’provision of § 15.203 is not applicable tomodules but can apply to limited modular approvals under paragraph (b) ofthis section. YES The modular accord with the antenna requirements of Section 15.203 and 15.204(b)(c) (v) The modular transmitter must be tested in a stand-alone configuration YES (vi) The modular transmitter must beequipped with either a permanently affixedlabel or must be capable of electronicallydisplaying its FCC identification number. YES The modular have one permanently affixed label (vii) The modular transmitter mustcomply with any specific rules or operatingrequirements that ordinarilyapply to a complete transmitter andthe manufacturer must provide adequateinstructions along with the moduleto explain any such requirements.A copy of these instructions must beincluded in the application for equipmentauthorization. YES The modular transmitter accord with any specific rule or operating requirements (viii) The modular transmitter mustcomply with any YES Z:\2020\Xiaojiang(小匠)\EN201210009W(ES201210076W) ( XJ‐B1A)\2.Technical Document\Timco\Modular‐Approval‐Letter.docx applicable RF exposurerequirements in its final configuration. The modular transmitter accord RF exposure requirements The letter must be on the applicant’s letterhead and signed by the grantee code contact. Signature: Jizongchen/Manager Ningbo XiaojiangIoT Technology Co Ltd Data: January 11, 2021

(Ningbo XiaojiangIoT Technology Co Ltd) Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: January 07, 2021 SUBJECT: FCC Application for FCC ID: 2AXSOXJ-B1A To Whom It May Concern: We, the undersigned, hereby authorize Tony Wei at EMTEK(NINGBO) CO., LTD. on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by EMTEK(NINGBO) CO., LTD. on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, Jizongchen/Manager Ningbo XiaojiangIoT Technology Co Ltd

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Label Location 2AXSOXJ‐B1A

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FCC ID: 2AXSOXJ-B1A RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in §1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density(mW/cm 2 ) Average Time (A) Limits for Occupational/Control Exposures 300-1500 -- -- F/300 6 1500-100000 -- -- 5 6 (B) Limits for General Population/Uncontrol Exposures 300-1500 -- -- F/1500 6 1500-100000 -- -- 1 30 11.1 Friis transmission formula: Pd= (Pout*G)\ (4*pi*R 2 ) Where Pd= Power density in mW/cm 2 Pout=output power to antenna in mW G= Numeric gain of the antenna relative to isotropic antenna Pi=3.1416 R= distance between observation point and center of the radiator in cm Pd the limit of MPE,1mW/cm 2 . If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. mW = 10^( dBm/10) 11.2 Measurement Result Operation Frequency: 2402MHz-2480MHz; Antenna gain: 1.5 dBi; R=20cm BLE 1M Channel Freq. (MHz) modulation Measured power (dBm) Tune-up power (dBm) Max tune-up power (dBm) Antenna Gain Numeric Evaluation result (mW/cm2) Power density Limits (mW/cm2 ) 2402 GFSK 1.277 0±2 2 1.41 0.000445378 1 2440 1.313 0±2 2 1.41 0.000445378 1 2480 1.391 0±2 2 1.41 0.000445378 1 BLE 2M Channel Freq. (MHz) modulation Measured power (dBm) Tune-up power (dBm) Max tune-up power (dBm) Antenna Gain Numeric Evaluation result (mW/cm2) Power density Limits (mW/cm2 ) 2402 GFSK 1.281 0±2 2 1.41 0.000445378 1 2440 1.325 0±2 2 1.41 0.000445378 1 2480 1.347 0±2 2 1.41 0.000445378 1 *** End of Report ***

Report No.ES201210076W Page 1 of 44 Ver.1.0 TEST REPORT $二维码$ Product Name : Bluetooth module Model Number : XJ-B1A FCC ID : 2AXSOXJ-B1A Prepared for : Ningbo Xiaojiang IoT Technology Co Ltd Address : Room 2302-2303, Jiayin Building, No.455, Keji Road, Yinzhou District, Ningbo, China Prepared by : EMTEK (SHENZHEN) CO., LTD. Address : Building 69, Majialong Industry Zone, Nanshan District, Shenzhen, Guangdong, China Tel: (0755) 26954280 Fax: (0755) 26954282 Report Number : ES201210076W Date(s) of Tests : December 10, 2020 to January 06, 2021 Date of Issue : January 07, 2021 Report No.ES201210076W Page 2 of 44 Ver.1.0 Table of Contents 1 TEST RESULT CERTIFICATION .......................................................................................................... 3 2 EUT TECHNICAL DESCRIPTION ......................................................................................................... 4 3 SUMMARY OF TEST RESULT ............................................................................................................. 5 4 TEST METHODOLOGY ......................................................................................................................... 6 4.1 GENERAL DESCRIPTION OF APPLIED STANDARDS ............................................................................ 6 4.2 MEASUREMENT EQUIPMENT USED ........................................................................................................ 6 4.3 DESCRIPTION OF TEST MODES ................................................................................................................ 7 5 FACILITIES AND ACCREDITATIONS .................................................................................................. 8 5.1 FACILITIES ....................................................................................................................................................... 8 5.2 LABORATORY ACCREDITATIONS AND LISTINGS .................................................................................. 8 6 TEST SYSTEM UNCERTAINTY ........................................................................................................... 8 7 SETUP OF EQUIPMENT UNDER TEST ............................................................................................... 9 7.1 RADIO FREQUENCY TEST SETUP 1 ......................................................................................................... 9 7.2 RADIO FREQUENCY TEST SETUP 2 ......................................................................................................... 9 7.3 CONDUCTED EMISSION TEST SETUP ................................................................................................... 11 7.4 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM .................................................................... 12 7.5 SUPPORT EQUIPMENT .............................................................................................................................. 12 8 TEST REQUIREMENTS ...................................................................................................................... 13 8.1 DTS 6DB BANDWIDTH ................................................................................................................................ 13 8.2 MAXIMUM PEAK CONDUCTED OUTPUT POWER ................................................................................ 17 8.3 MAXIMUM POWER SPECTRAL DENSITY ............................................................................................... 21 8.4 UNWANTED EMISSIONS IN NON-RESTRICTED FREQUENCY BANDS .......................................... 25 8.5 RADIATED SPURIOUS EMISSION ............................................................................................................ 30 8.6 CONDUCTED EMISSIONS TEST .............................................................................................................. 42 8.7 ANTENNA APPLICATION ............................................................................................................................ 43 Report No.ES201210076W Page 3 of 44 Ver.1.0 1 TEST RESULT CERTIFICATION Applicant : Ningbo Xiaojiang IoT Technology Co Ltd Address : Room 2302-2303, Jiayin Building, No.455, Keji Road, Yinzhou District, Ningbo, China Manufacturer : Ningbo Xiaojiang IoT Technology Co Ltd Address : Room 2302-2303, Jiayin Building, No.455, Keji Road, Yinzhou District, Ningbo, China EUT : Bluetooth module Model Name : XJ-B1A Trademark : N/A Measurement Procedure Used: APPLICABLE STANDARDS STANDARD TEST RESULT FCC 47 CFR Part 2 , Subpart J FCC 47 CFR Part 15, Subpart C PASS The above equipment was tested by EMTEK(SHENZHEN) CO., LTD. The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.10 (2013) and the energy emitted by the sample EUT tested as described in this report is in compliance with the requirements of FCC Rules Part 2 and Part 15.247 The test results of this report relate only to the tested sample identified in this report Date of Test : December 10, 2020 to January 06, 2021 Prepared by : Sewen Guo /Editor Reviewer : Joe Xia/Editor Approve & Authorized Signer : Lisa Wang/Manager Report No.ES201210076W Page 4 of 44 Ver.1.0 2 EUT TECHNICAL DESCRIPTION Characteristics Description Product Bluetooth module Model Number XJ-B1A Sample Number 1# Device Type Bluetooth V5.0 Data Rate : Up to 2 Mbps for GFSK modulation Modulation: Bluetooth DTS: GFSK Operating Frequency Range: 2402-2480MHz Number of Channels: 40 Channels for Bluetooth DTS; Transmit Power Max: 1.391 dBm Antenna Type: PCB Antenna Antenna Gain: 1.5 dBi Power supply DC 3.3V Temperature Range: -40°C to +85°C Date of Received: December 10, 2020 Note: for more details, please refer to the User’s manual of the EUT. Report No.ES201210076W Page 5 of 44 Ver.1.0 3 SUMMARY OF TEST RESULT FCC Part Clause Test Parameter Verdict Remark 15.247(a)(2) DT…

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Radiated ---The End---