FCC ID: 2ARUS-LRM9B LoRa RF Transceiver Module

www.AKCP.com AKCP LORA_RADIO_MODULE Manual LORA RF Transceiver Module Copyright 2020, AKCP Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual Table of Contents 1. Introduction ..................................................................................................................................................... 3 2. Features ........................................................................................................................................................... 3 3. Applications ...................................................................................................................................................... 3 4. Electrical Characteristics ................................................................................................................................... 4 5. Peripheral Schematics ...................................................................................................................................... 5 6. Pin definition .................................................................................................................................................... 5 7. Communications Interface ............................................................................................................................. 6 8. Package information ......................................................................................................................................... 6 a. Mechanical dimensions (Unit:mm)............................................................................................................. 6 b. Recommended PCB Land Pattern (Unit:mm) .............................................................................................. 7 9. Antenna and Signal ........................................................................................................................................... 8 a. U.FL antenna ............................................................................................................................................. 8 b. External PCB trace to Connector guidelines................................................................................................ 8 c. Signal performances .................................................................................................................................. 9 Appendix 1: SMD Reflow Chart .................................................................................................................................. 11 Revision history .......................................................................................................................................................... 12 Regulation information .............................................................................................................................................. 13

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Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual 1. Introduction AKCP_LORA_RADIO_MODULE integrates Semtech RF transceiver chip SX1276, which adopts LoRa Spread Spectrum modulation frequency hopping technique. The features of long distance and high sensitivity

(-139 dBm) make this module perform better than FSK and GFSK module. Multi-signal won't affect each other even in crowded frequency environment; it comes with strong anti-interference performance. This module is 50mW and ultra-small size, can be widely used in a variety of networking occasions, for automatic meter reading, home building automation, security systems, and remote irrigation systems, is the ideal solution for Internet of Things networking applications. 2. Features Frequency Range:

o 902-928MHz, o 863-870Mhz

(Customizable: 862~1020MHz ) Sensitivity up to -139dBm @LoRa Maximum output power:

o +18 dBm in 902-928MHz (LRM9B model) o +14 dBm in 863-870MHz (LRM8 model) 13mA@receiver mode Sleep current <200 nA Data transfer rate:

o @FSK : 1.2-300 Kbps o @LoRa: 0.018-37.5 Kbps 3. Applications Industrial control Remote meter reading Home automation remote sensing Sensor network Health monitoring LoRa, FSK, GFSK & OOK Modulation mode Built-in ESD Protection 127 dB Dynamic Range RSSI Packet engine up to 256 bytes with FIFO and CRC Hopping frequency Built-in temperature sensor and low battery indicator Supports half-duplex SPI communications Excellent blocking immunity Operating Temperature Range

-40 ~ +85C On-board U.Fl antenna connector Optional external antenna pin Generator monitoring Agricultural monitoring Security monitoring Power metering

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Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual 4. Electrical Characteristics Parameter Min. Typ. Max. Unit Condition Working voltage Temperature range 1.8

-40 3.3 3.7

+85 V Operation condition Current consumption RX current TX current Sleep current 10.8 120

<0.2 mA mA uA

@20dBm RF parameter Frequency range Modulation rate Output power range Receiving sensitivity 863 902 1.2 0.018

-1 868 915

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-136 870 928 300 37.5 18 MHz @868MHz MHz @915Mhz Kbps Kbps dBm dBm @FSK data=1.2kbps, Fdev=5kHZ dBm @Lora BW=125KHz SF=12 CR=4/5 FSK LoRa Note: According to the design of the module, when transmitting in the 915MHz band, the maximum bit of register 0x09 (RegPaConfig) must be set as 1. PaSelect must be set 1; or set to 0 otherwise. SX1276 RegPaConfig register

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Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual 5. Peripheral Schematics Peripheral Schematic 6. Pin definition Top View

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Pin NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Pin Name Type Description GND DIO5 DIO4 DIO0 DIO1 DIO2 DIO3 GND GND 3V3 CLK MISO MOSI NSS RESET#

GND GND PWR Power Ground I/O I/O I/O I/O I/O I/O Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O PWR Power Ground PWR Power Ground PWR Power Supply (Typical 3.3V) SPI Clock SPI MISO (SPI Output data) SPI MOSI (SPI input data) SPI enable Reset Input (active Low) I O I I I PWR Power Ground PWR Power Ground EXT_ANT RF External Antenna, 50Ohm impedance GND PWR Power Ground Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual 7. Communications Interface The AKCP_LORA_RADIO_MODULE embed the Semtechs SX1276 LoRa transceiver IC, please refer to the SX1276 datasheet for further information regarding the communication and its configurations. 8. Package information a. Mechanical dimensions (Unit:mm) Top View Side View Mechanical dimensions Bottom view

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Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual b. Recommended PCB Land Pattern (Unit:mm) PCB land pattern

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Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual 9. Antenna and Signal The module is by standard assembled with an on-board U.FL antenna connector. a. U.FL antenna connector The AKCP_LORA_RADIO_MODULE provides a male U.FL antenna connector as standard. The connector is specified for 50Ohms impedance signals. Connector specifications: Hirose, part number UFL-R-SMT10

( https://www.hirose.com/product/en/products/U.FL/U.FL-R-SMT-1%2810%29/ ) b. External PCB trace to Connector guidelines The AKCP_LORA_RADIO_MODULE provides a RFIO pin for connecting an external PCB antenna when the on-board U.Fl antenna connector is not suitable. In this case, R25 (0 Ohm) resistor should be mounted and L8 should be removed. An antenna is very important for RF communication; its performance will affect the communication directly. The module needs an antenna in 50Ohm impedance. A common antenna as rubber straight/ elbow/ swivel antenna, etc could be used. To ensure that the module will work with the best possible performance, we suggest using our qualified antennas. When an external antenna is required, it is required to follow the layout requirements below for the host PCB board. Signal trace :

o o o it should be implemented with a controlled single trace impedance of 50Ohms (refer to your PCB maker supplier for more information), it should be implemented above a ground plane, it is recommended to use a Coplanar Waveguide (Grounded) with via fences on both sides of the coplanar waveguide. Antenna connectors:

o Antenna connectors should have an impedance of 50Ohms :

AMTEK part# SMA009,

TEKFUN part# SMA-04 o A PI matching network should be implemented near the antenna connector. Layout specifications for a 50 Ohms trace impedance on host PCB with RP-SMA through-hole connector:

Trace width : 6.5 mils

Trace spacing with ground shape : 5 mils

Top layer copper thickness : 0.7 mils (0.5Oz)

FR-4 Dielectric thickness : 4 mils

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Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual Reference Gerber c. Antenna To ensure that the module follow RF regulations, the user must use the antenna specified for the module :

Tekfun part# I50-S. Impedance: 50 OHM 868/915MHz Rubber Dipole antenna (Swivel RP-SMA Male for LRM9B) characteristics:

Frequency Range: 862~870/902~928MHz V.S.W.R: < 2 Type of Radiation: Omni-directional Polarization: Vertical Gain: 2-3dBi Electrical Wave: 1/2 wave Connector: RP-SMA Male (Swivel) Brass o Whip Material: ABS Size: 135.6x20.1mm Important:

For OEM installations, with the LRM9B model, the Modular Certification is only applicable to the antenna Tekfun part# I50-S (with reverse SMA), connected through the UFL connector. d. Signal performances To ensure that the module gets the best performance, the user must obey the following principles when using the module Put the module away from the ground and obstacles as far away possible as you could;

The antenna has the best performance when mounted vertically

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Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual e. LRM9B Transmission modes The module is meant for the USA, Canada and all other countries adopting the entire FCC-Part15 regulations in 902-928 ISM band. The module is supporting both Frequency-Hopping, Spread-Spectrum

(FHSS) mode and Digital Transmission System (DTS) mode. The FHSS mode requires that the device transmit at a measured conducted power level no greater than

+30 dBm, for a period of no more than 400 msec and over at least 50 channels, each of which occupy no greater than 250 kHz of bandwidth. Digital Transmission System (DTS) mode, which requires that the device use channels greater than or equal to 500 kHz and comply to a conducted Power Spectral Density measurement of no more than +8 dBm per 3kHz of spectrum. Hybrid mode, which requires that the device transmit over multiple channels (this may be less than the 50 channels required for FHSS mode, but is recommended to be at least 4) while complying with the Power Spectral Density requirements of DTS mode and the 400 msec dwell time of FHSS mode.

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Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual Appendix 1: SMD Reflow Chart We recommend you to follow the IPC related standards in setting the reflow profile:

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Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual Revision history Revision Date Comment V1.0 V1.1 2018-09 2018-11 V1.2 2019-02 V1.3 2019-08 V1.4 2019-09 V1.5 2020-01 Initial Release Update on-board design change Add Gerber/Layout requirement for external PCB trace on host PCB Add OEM Manual Statements for limited module Update maximum output power for LRM9B model Add 9.e LRM9B transmission modes Add note for LRM9B antenna Update FCC regulation text

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Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual Regulation information Compliance Statement (Part 15.19) 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. Warning (Part 15.21) Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. To comply with FCC/IC RF exposure limits for general population / uncontrolled exposure, the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. Important FCC notice:

In accordance with FCC Part 15C this module is listed as a Full Modular Transmitter device. Changes or modifications not expressly approved by the manufacturer could void the users authority to operate the equipment. Therefore, the final host product must be submitted to AKCP for confirmation that the installation of the module into the host is in compliance with the regulations of FCC and IC Canada. Specifically, if an antenna other than the model documented in the Filing is used, a Class 2 Permissive Change must be filed with the FCC. The antenna of this transmitter must not be co-located or operating in conjunction with any other antenna or transmitters within a host device, except in accordance with FCC multitransmitter product approval procedures. FCC Label Instructions The outside of final products that contains this module device must display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains Transmitter Module FCC ID:

2ARUS-LRM9B or Contains FCC ID: 2ARUS-LRM9B. Any similar wording that expresses the same meaning may be used. Additionally, there must be the following sentence on the device, unless it is too small to carry it:

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.

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Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual SIMPLIFIED EU DECLARATION OF CONFORMITY The simplified EU declaration of conformity referred to in Article 10(9) shall be provided as follows:

Hereby, AKCP declares that the radio equipment type AKCP LoRa Radio Module LRM8 is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address:

https://www.akcp.com/sales-information/certifications/

Contact in EU: Project Office, 4th Floor, Fasaneninsel 1, Kraftsdorf, D-07548 GERA, Germany

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Revision 1.5 2020/01 http://www.akcp.com AKCP LORA_RADIO_MODULE Manual Please contact support@akcp.com if you have any further technical questions or problems. Thanks for Choosing AKCP!

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Revision 1.5 2020/01 http://www.akcp.com

AKCess Pro Limited 89/13 Amornpan 205 Tower 1, Ratchadaphisek Road, Dindaeng Bangkok THAILAND Confidentiality Request Letter Confidentiality Request regarding application for certification of FCC ID: 2ARUS-LRM9B Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, and IC RSP-100, Section 6.4, we hereby request confidential treatment of information accompanying this application as outlined below:

Exhibit Type Block Diagram Schematics Operational Description 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. Sincerely, Charles MEYER

AKCess Pro Limited 89/13 Amornpan 205 Tower 1, Ratchadaphisek Road, Dindaeng Bangkok THAILAND Request for Modular/Limited Modular Approval Date: February 13, 2020 Subject: Manufacturers Declaration for - Modular Approval Confidentiality Request for: 2ARUS-LRM9B

- Limited Modular Approval - Limited Split Modular Approval

- Split Modular Approval For Items Marked NO(*), the Limited Module Description Must be Filled Out on the Following Pages 8 Basic Requirements FCC Part 15.212(a)(1) Modular Approval Requirement Requirement Met 1. The modular transmitter must have its own RF shielding. This is intended to ensure that the module does not have to rely upon the shielding provided by the device into which it is installed in order for all modular transmitter emissions to comply with FCC limits. It is also intended to prevent coupling between the RF circuitry of the module and any wires or circuits in the device into which the module is installed. Such coupling may result in non-compliant operation. The physical crystal and tuning capacitors may be located external to the shielded radio elements. 15.212(a)(1)(i) Details: The module has its own RF shielding. Shield Can is employed on the board structure, please see exhibition External Photo, the emission measurement was conducted without further shielding added.

- YES - NO(*) 2. The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with FCC requirements under conditions of excessive data rates or over-modulation. 15.212(a)(1)(ii) Details: All modulation and data input(s) are buffered. The EUT has buffered data inputs, it is integrated on the RF chip

- YES - NO(*) 3. The modular transmitter must have its own power supply regulation on the module. This is intended to ensure that the module will comply with FCC requirements regardless of the design of the power supplying circuitry in the device into which the module is installed. 15.212(a)(1)(iii) Details: Output power is controlled by the RF Chip and de-coupled from supply voltage variations. Frequencies are determined by Crystal

- YES - NO(*) 4. The modular transmitter must comply with the antenna and transmission system requirements of 15.203, 15.204(b), 15.204(c), 15.212(a), and 2.929(b). The antenna must either be permanently attached or employ a unique antenna coupler (at all connections between the module and the antenna, including the cable). The professional installation provision of 15.203 is not applicable to modules but can apply to limited modular approvals under paragraph 15.212(b). 15.212(a)(1)(iv) Details: The EUT meets the FCC antenna Requirements. Antenna connector, extension cable and dipole antenna specifications are provided and instructions available in User Manual.

- YES - NO(*) 5. The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing. This is intended to demonstrate that the module is capable of complying with Part 15 emission limits regardless of the device into which it is eventually installed. Unless the transmitter module will be battery powered, it must comply with the AC line conducted requirements found in Section 15.207. AC or DC power lines and data input/output lines connected to the module must not contain ferrites, unless they will be marketed with the module (see Section 15.27(a)). The length of these lines shall be length typical of actual use or, if that length is unknown, at least 10 centimeters to insure that there is no coupling between the case of the module and supporting equipment. Any accessories, peripherals, or support equipment connected to the module during testing shall be unmodified or commercially available (see Section 15.31(i)). 15.212(a)(1)(v) Details: The modular transmitter was tested in a stand-alone configuration via a SPI Interface.

- YES - NO(*) 053019-02a AKCess Pro Limited 89/13 Amornpan 205 Tower 1, Ratchadaphisek Road, Dindaeng Bangkok THAILAND 6. The modular transmitter must be labeled with its own FCC ID number, or use an electron display (see Modular Approval Requirement Requirement Met KDB Publication 784748). If using a permanently affixed label with its own FCC ID number, if the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains Transmitter Module FCC ID: XYZMODEL1 or Contains FCC ID:

XYZMODEL1. Any similar wording that expresses the same meaning may be used. The Grantee may either provide such a label, an example of which must be included in the application for equipment authorization, or, must provide adequate instructions along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the application for equipment authorization. If the modular transmitter uses an electronic display of the FCC identification number, the information must be readily accessible and visible on the modular transmitter or on the device in which it is installed. If the module is installed inside another device, then the outside of the device into which the module is installed must display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains FCC certified transmitter module(s). Any similar wording that expresses the same meaning may be used. The user manual must include instructions on how to access the electronic display. A copy of these instructions must be included in the application for equipment authorization. 15.212(a)(1)(vi) Details: In the exhibition OEM manual, there are Instructions given to the OEM on how to label the end product.

- YES - NO(*) 7. The modular transmitter must comply with all specific rule or operating requirements applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. A copy of these instructions must be included in the application for equipment authorization. For example, there are very strict operational and timing requirements that must be met before a transmitter is authorized for operation under Section 15.231. For instance, data transmission is prohibited, except for operation under Section 15.231(e), in which case there are separate field strength level and timing requirements. Compliance with these requirements must be assured. 15.212(a)(1)(vii) Details: Instructions in User Manual 8. The modular transmitter must comply with any applicable RF exposure requirements. For example, FCC Rules in Sections 2.1091, 2.1093 and specific Sections of Part 15, including 15.319(i), 15.407(f), 15.253(f) and 15.255(g), require that Unlicensed PCS, UNII and millimeter wave devices perform routine environmental evaluation for RF Exposure to demonstrate compliance. In addition, spread spectrum transmitters operating under Section 15.247 are required to address RF Exposure compliance in accordance with Section 15.247(b)(4). Modular transmitters approved under other Sections of Part 15, when necessary, may also need to address certain RF Exposure concerns, typically by providing specific installation and operating instructions for users, installers and other interested parties to ensure compliance. 15.212(a)(1)(viii) Details: Please refer the Maximum Permissible Exposure Information.

- YES - NO(*)

- YES - NO(*) 053019-02a AKCess Pro Limited 89/13 Amornpan 205 Tower 1, Ratchadaphisek Road, Dindaeng Bangkok THAILAND Limited Module Description When Applicable

* If a module does NOT meet one or more of the above 8 requirements, the applicant may request Limited Modular Approval (LMA). This Limited Modular Approval (LMA) is applied with the understanding that the applicant will demonstrate and will retain control over the final installation of the device, such that compliance of the end product is always assured. The operating condition(s) for the LMA;

the module is only approved for use when installed in devices produced by grantee. A description regarding how control of the end product, into which the module will be installed, will be maintained by the applicant/manufacturer, such that full compliance of the end product is always ensured should be provided here. Details: N/A Software Considerations KDB 594280 / KDB 442812 (One of the following 2 items must be applied) Requirement Requirement Met 1. For non-Software Defined Radio transmitter modules where software is used to ensure compliance of the device, technical description must be provided about how such control is implemented to ensure prevention of third-party modification; see KDB Publication 594280. Details: The firmware of the device can not be modified or adjusted by the end user as described in a separate cover letter filed with this application.

- Provided in Separate Cover Letter

- N/A 2. For Software Defined Radio (SDR) devices, transmitter module applications must provide a software security description; see KDB Publication 442812. Details: <example N/A>

- Provided in Separate Cover Letter

- N/A Split Modular Requirements Requirement 1. For split modular transmitters, specific descriptions for secure communications between front-end and control sections, including authentication and restrictions on third-party modifications; also, instructions to third-party integrators on how control is maintained. Details: <example N/A >

Provided in Manual

- Provided in Separate Cover Letter

- N/A 053019-02a AKCess Pro Limited 89/13 Amornpan 205 Tower 1, Ratchadaphisek Road, Dindaeng Bangkok THAILAND OEM Integration Manual Guidance KDB 996369 D03 Section 2 Clear and Specific Instructions Describing the Conditions, Limitations, and Procedures for third-parties to use and/or integrate the module into a host device. Requirement Is this module intended for sale to third parties?

- YES

- No, If No, and LMA applies, the applicant can optionally choose to not make the following detailed info public. However there still needs to be basic integration instructions for a users manual and the information below must still be included in the operational description. If the applicant wishes to keep this info confidential, this will require a separate statement cover letter explaining the module is not for sale to third parties and that integration instructions are internal confidential documents. Items required to be in the manual See KDB 996369 D03, Section 2 As of May 1, 2019, the FCC requires ALL the following information to be in the installation manual. Modular transmitter applicants should include information in their instructions for all these items indicating clearly when they are not applicable. For example information on trace antenna design could indicate Not Applicable. Also if a module is limited to only a grantees own products and not intended for sale to third parties, the user instructions may not need to be detailed and the following items can be placed in the operational description, but this should include a cover letter as cited above. 1. List of applicable FCC rules. KDB 996369 D03, Section 2.2 a. Only list rules related to the transmitter. 2. Summarize the specific operational use conditions. KDB 996369 D03, Section 2.3 a. Conditions such as limits on antennas, cable loss, reduction of power for point to point systems, professional installation info 3. Limited Module Procedures. KDB 996369 D03, Section 2.4 a. Describe alternative means that the grantee uses to verify the host meets the necessary limiting conditions b. When RF exposure evaluation is necessary, state how control will be maintained such that compliance is ensured, such as Class II for new hosts, etc. 4. Trace antenna designs. KDB 996369 D03, Section 2.5 a. Layout of trace design, parts list, antenna, connectors, isolation requirements, tests for design verification, and production test procedures for ensuring compliance. If confidential, the method used to keep confidential must be identified and information provided in the operational description. 5. RF exposure considerations. KDB 996369 D03, Section 2.6 a. Clearly and explicitly state conditions that allow host manufacturers to use the module. Two types of instructions are necessary: first to the host manufacturer to define conditions (mobile, portable xx cm from body) and second additional text needed to be provided to the end user in the host product manuals. 6. Antennas. KDB 996369 D03, Section 2.7 a. List of antennas included in the application and all applicable professional installer instructions when applicable. The antenna list shall also identify the antenna types

(monopole, PIFA, dipole, etc note that omni-directional is not considered a type) 7. Label and compliance information. KDB 996369 D03, Section 2.8 a. Advice to host integrators that they need to provide a physical or e-label stating Contains FCC ID: with their finished product 8. Information on test modes and additional testing requirements. KDB 996369 D03, Section 2.9 a. Test modes that should be taken into consideration by host integrators including clarifications necessary for stand-alone and simultaneous configurations. b. Provide information on how to configure test modes for evaluation 9. Additional testing, Part 15 Subpart B disclaimer. KDB 996369 D03, Section 2.10

- All Items shown to the left are provided in the Modular Integration Guide (or UM) for Full Modular Approval (MA) or LMA.

- An LMA applies and is approved ONLY for use by the grantee in their own products, and not intended for sale to 3rd parties as provided in a separate cover letter. Therefore the information shown to the left is found in the theory of operation. Sincerely, By:

(Signature/Title1) ____ Charles Meyer ___ Vice President

(Print name) 1 - Must be signed by applicant contact given for applicant on the FCC site, or by the authorized agent if an appropriate 053019-02a AKCess Pro Limited 89/13 Amornpan 205 Tower 1, Ratchadaphisek Road, Dindaeng Bangkok THAILAND authorized agent letter has been provided. Letters should be placed on appropriate letterhead. 053019-02a

AKCess Pro Limited 89/13 Amornpan 205 Tower 1, Ratchadaphisek Road, Dindaeng Bangkok THAILAND Authority to Act as Agent Date: January 18, 2020 American Certification Body, Inc. 6731 Whittier Avenue Suite C110 McLean, VA 22101 To Whom It May Concern:

TUV Rheinland Taiwan is authorized to act on our behalf, until otherwise notified, for applications to American Certification Body, Inc. (ACB). We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. We also declare that the information provided to the FCC is true and correct to the best of our knowledge (47 CFR 2.911(d)) and we have been informed of the grantee responsibilities (47 CFR 2.909) with regard to certified equipment. Thank you, Agency Agreement Expiration Date: _____(12 months)_____ By:

Title:

On behalf of: AKCESS PRO LIMITED __________________________ Telephone:

__________________________ _ _Charles Meyer

(Print name) __ Vice President ___ ___+6621634635___

(Company Name)

(Signature1) 1 - Must be signed by applicant contact given for applicant on the FCC site, or by the authorized agent if an appropriate authorized agent letter has been provided. Letters should be placed on appropriate letterhead. 053019 12 AKCess Pro Limited 89/13 Amornpan 205 Tower 1, Ratchadaphisek Road, Dindaeng Bangkok THAILAND 053019 12