2AG87NM-DB-2MWi-Fi Radio Transceiver

Doodle Labs (SG) Pte Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date:2020-09-03 Subject; Request for Long Term Confidentiality FCC ID: 2AG87NM-DB-2M To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Dr Aaron Do Title: Senior RF Engineer

Doodle Labs (SG) Pte Ltd Agent Authorization Company: Doodle Labs (SG) Pte Ltd Address: 150 Kampong Ampat, KA Center, Suite 05-03, Singapore 368324, Singapore Product Name: Wi-Fi® Radio Transceiver Model Number(s): NM-DB-2M Product Description: Wi-Fi® Radio Transceiver We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2020-09-03 Name: Dr Aaron Do Title: Senior RF Engineer Company: Doodle Labs (SG) Pte Ltd

Compliance list INTEGRATION INSTRUCTIONS for 996369 D03 OEM the and 996369 D03 OEM by Sections 2.2 through 2.10. RequirementYesN/A Comment 2.2 List of applicable FCC rules List the FCC rules that are applicable to the modular transmitter. These are the rules that specifically establish the bands of operation, the power, spurious emissions, and operating fundamental frequencies. DO NOT list compliance to unintentional‐radiator rules (Part 15 Subpart B) since that is not a condition of a module grant that is extended to a host manufacturer. See also Section 2.10 below concerning the need to notify host manufacturers that further testing is required. 3 YESRefer to instruction FCC standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 and FCC CFR Title 47 Part 15 Subpart E Section 15.407: 2016 2.3 Summarize the specific operational use conditions Describe use conditions that are applicable to the modular transmitter, including for example any limits on antennas, etc. For example, if point‐to‐point antennas are used that require reduction in power or compensation for cable loss, then this information must be in the instructions. If the use condition limitations extend to professional users, then instructions must state that this information also extends to the host manufacturer’s instruction manual. In addition, certain information may also be needed, such as peak gain per frequency band and minimum gain, specifically for master devices in 5 GHz DFS bands. YESRefer to instruction Antenna Type: paper presents antenna Antenna Gain: 2.4G ： ANT0: 2.1dBi, ANT1: 2.1dBi 5G: Band1: 3.2dBi, Band3: 4.2dBi 2.4 Limited module procedures If a modular transmitter is approved as a “limited module,” then the module manufacturer is responsible for approving the host environment that the limited module is used with. The manufacturer of a limited module must describe, both in the filing and in the installation instructions, the alternative means that the limited module manufacturer uses to verify that the host meets the necessary requirements to satisfy the module limiting conditions. A limited module manufacturer has the flexibility to define its alternative method to address the conditions that limit the initial approval, such as: shielding, minimum YesRefer to instruction Antenna Type: paper presents antenna Antenna Gain: 2.4G ： ANT0: 2.1dBi, ANT1: 2.1dBi 5G: Band1: 3.2dBi, Band3: 4.2dBi signaling amplitude, buffered modulation/data inputs, or power supply regulation. The alternative method could include that the limited module manufacturer reviews detailed test data or host designs prior to giving the host manufacturer approval. This limited module procedure is also applicable for RF exposure evaluation when it is necessary to demonstrate compliance in a specific host. The module manufacturer must state how control of the product into which the modular transmitter will be installed will be maintained such that full compliance of the product is always ensured. For additional hosts other than the specific host originally granted with a limited module, a Class II permissive change is required on the module grant to register the additional host as a specific host also approved with the module. 2.5 Trace antenna designs For a modular transmitter with trace antenna designs, see the guidance in Question 11 of KDB Publication 996369 D02 FAQ – Modules for Micro‐Strip Antennas and traces. The integration information shall include for the TCB review the integration instructions for the following aspects: layout of trace design, parts list (BOM), antenna, connectors, and isolation requirements. 4 a) Information that includes permitted variances (e.g., trace boundary limits, thickness, length, width, shape(s), dielectric constant, and impedance as applicable for each type of antenna); b) Each design shall be considered a different type (e.g., antenna length in multiple(s) of frequency, the wavelength, and antenna shape (traces in phase) can affect antenna gain and must be considered); c) The parameters shall be provided in a manner permitting host manufacturers to design the printed circuit (PC) board layout; d) Appropriate parts by manufacturer and specifications; e) Test procedures for design verification; and NO The module has its own fixed antenna path f) Production test procedures for ensuring compliance. The module grantee shall provide a notice that any deviation(s) from the defined parameters of the antenna trace, as described by the instructions, require that the host product manufacturer must notify the module grantee that they wish to change the antenna trace design. In this case, a Class II permissive change application is required to be filed by the grantee, or the host manufacturer can take responsibility through the change in FCC ID (new application) procedure followed by a Class II permissive change application. 2.6 RF exposure considerations It is essential for module grantees to clearly and explicitly state the RF exposure conditions that permit a host product manufacturer to use the module. Two types of instructions are required for RF exposure information: (1) to the host product manufacturer, to define the application conditions (mobile, portable – xx cm from a person’s body); and (2) additional text needed for the host product manufacturer to provide to end users in their end‐product manuals. If RF exposure statements and use conditions are not provided, then the host product manufacturer is required to take responsibility of the module through a change in FCC ID (new application). YESRefer to instruction The modular can be installed or integrated in mobile or fix devices only. This modular cannot be installed in any portable device. This modular complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co‐located or operating in conjunction with any other antenna or transmitter. This modular must be installed and operated with a mi…

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Doodle Labs (SG) Pte Ltd FCC Modular Approval Request Rev 3.0 Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020-09-03 Subject; Modular Transmitter Application Company name: Doodle Labs (SG) Pte Ltd FCC ID: 2AG87NM-DB-2M Dear Sir/Madam, This letter includes the FCC application requirements for Modular Transmitter Approval Request for;- FCC KDB 996369 D01 ‘Module Certification Guide v02; and FCC KDB 996369 D03 OEM Manual v01 In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 ‘Module Equip Auth Guide v02’. FCC ID: 2AG87NM-DB-2M has been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 Explanation from Grantee (do not write yes/no, but explain why product complies/how it is achieved) The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly. The modular have RF own shielding The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal. The modular transmitter have buffered modulation/data inputs The module must contain power supply regulation on the module. The modular transmitter have its own power supply regulation. The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per §§ 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b). The modular has two paper presents antenna, which has a unique antenna connector. The module must demonstrate compliance in a stand-alone configuration. The module compliance in a stand-alone configuration. The module must be labeled with its permanently affixed FCC ID label, or use an electronic display (see KDB Publication 784748). The FCC identification number can put on the modular with either a permanently affixed label The module must comply with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. The instructions will be provided and apply to a complete transmitter and comply with specific rule. The module must comply with RF exposure requirements The total power density of modular transmitter final configuration comply with FCC RF Exposure Doodle Labs (SG) Pte Ltd FCC Modular Approval Request Rev 3.0 Integration Instructions for host product manufacturers The following items are submitted in support of application for Modular Transmitter FCC ID as noted above as required by the FCC KDB 996369 D03 OEM Manual v01. These items are provided as integration instructions for host product manufacturers (e.g., OEM instruction manual) to use when integrating a module in a host product. Any requirements that are not applicable to the Module are as indicated below. Summary of requirements and Checklist.Refer to the KDB for description of the complete requirements; KDB Ref Sect Requirements of KDB 996369 D03 User Manual Page Number reference 2.2 List of applicable FCC rules Page 10 2.3 Summarize the specific operational use conditions Page 8 2.4 Limited module procedures Not compliance 2.5 Trace antenna designs Not compliance 2.6 RF exposure considerations Page 10 2.7 Antennas Page 10 2.8 Label and compliance information Page 10 2.9 Information on test modes and additional testing requirements Page 10 2.10 Additional testing, Part 15 Subpart B disclaimer Page 10 Name: Dr Aaron Do Date: 2020-09-03 Title: Senior RF Engineer Signature of applicant

Page 1 of 5 Appendix B: Photographs of EUT Product: Wi-Fi® Radio Transceiver Model: NM-DB-2M External Photos ANT0 ANT1 Page 2 of 5 Page 3 of 5 Page 4 of 5 Page 5 of 5

Label Artwork and Location Model: NM-DB-2M Label: Size: L*W=20*12mm Location

Page 1 of 2 Appendix B: Photographs of EUT Product: Wi-Fi® Radio Transceiver Model: NM-DB-2M Internal Photos Page 2 of 2

Maximum Permissible Exposure Applicable Standard According to §1.1307(b), systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. Remark: 1) MIMO MPE: For 2.4G WIFI: The maximum output power for antenna 0 is 24.65dBm (291.74mW) at 2462MHz, 2.1dBi antenna gain(with 1.62 numeric antenna gain.) The maximum output power for antenna 1 is 24.87dBm (306.90mW) at 2412MHz, 2.1dBi antenna gain(with 1.62 numeric antenna gain.) For Band 1: The maximum output power for antenna 0 is 17.89dBm (61.52mW) at 5240MHz, 3.2dBi antenna gain(with 2.09 numeric antenna gain.) The maximum output power for antenna 1 is 17.69dBm (58.75mW) at 5230MHz, 3.2dBi antenna gain(with 2.09 numeric antenna gain.) For Band 3: The maximum output power for antenna 0 is 20.02dBm (100.46mW) at 5785MHz, 4.2dBi antenna gain(with 2.63 numeric antenna gain.) The maximum output power for antenna 1 is 19.93dBm (98.40mW) at 5785MHz, 4.2dBi antenna gain(with 2.63 numeric antenna gain.) 2) For mobile or fixed location transmitters, no SAR consideration applied. The minimum separation generally be used is at least 20cm, even if the calculation indicate that the MPE distance would be lesser. Substituting the MPE safe distance using d=20cm into above equation. Yields: S=0.000199*P*G MPE 0: Mode Power(mW) numeric antenna gain Power density (mW/cm 2 ) 2.4G WIFI 291.74 1.62 0.094051 Band 1 61.52 2.09 0.025587 Band 3 100.46 2.63 0.052578 MPE 1: Mode Power(mW) numeric antenna gain Power density (mW/cm 2 ) 2.4G WIFI 306.90 1.62 0.098938 Band 1 58.75 2.09 0.024435 Band 3 98.40 2.63 0.051500 Total MPE: Maximum Emissions Level Mode MPE 0 MPE 1 Total MPE Limit (mW/cm 2 ) Result 2.4G WIFI 0.094051 0.098938 0.192989 1.0 PASS Band 1 0.025587 0.024435 0.050022 Band 3 0.052578 0.051500 0.104078

Report No.: TCT200616E047 Page 66 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Power NVNT 802.11n(HT20) 5745MHz Ant0 Power NVNT 802.11n(HT20) 5785MHz Ant0 Report No.: TCT200616E047 Page 67 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Power NVNT 802.11n(HT20) 5825MHz Ant0 Power NVNT 802.11n(HT40) 5190MHz Ant0 Report No.: TCT200616E047 Page 68 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Power NVNT 802.11n(HT40) 5230MHz Ant0 Power NVNT 802.11n(HT40) 5755MHz Ant0 Report No.: TCT200616E047 Page 69 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Power NVNT 802.11n(HT40) 5795MHz Ant0 Report No.: TCT200616E047 Page 70 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Occupied Channel Bandwidth Condition Mode Frequency (MHz) Antenna 99% OBW (MHz) -26 dB Bandwidth (MHz) NVNT 802.11a 5180 Ant0 16.799 24.29 NVNT 802.11a 5200 Ant0 16.836 28.52 NVNT 802.11a 5240 Ant0 16.986 28.23 NVNT 802.11a 5745 Ant0 17.469 / NVNT 802.11a 5785 Ant0 17.936 / NVNT 802.11a 5825 Ant0 17.444 / NVNT 802.11n(HT20) 5180 Ant0 17.966 25.55 NVNT 802.11n(HT20) 5200 Ant0 17.943 26.91 NVNT 802.11n(HT20) 5240 Ant0 18.080 25.90 NVNT 802.11n(HT20) 5745 Ant0 18.549 / NVNT 802.11n(HT20) 5785 Ant0 18.645 / NVNT 802.11n(HT20) 5825 Ant0 18.759 / NVNT 802.11n(HT40) 5190 Ant0 36.545 52.83 NVNT 802.11n(HT40) 5230 Ant0 36.727 49.86 NVNT 802.11n(HT40) 5755 Ant0 36.562 / NVNT 802.11n(HT40) 5795 Ant0 36.575 / Report No.: TCT200616E047 Page 71 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com OBW NVNT 802.11a 5180MHz Ant0 OBW NVNT 802.11a 5200MHz Ant0 OBW NVNT 802.11a 5240MHz Ant0 Report No.: TCT200616E047 Page 72 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com OBW NVNT 802.11a 5745MHz Ant0 OBW NVNT 802.11a 5785MHz Ant0 Report No.: TCT200616E047 Page 73 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com OBW NVNT 802.11a 5825MHz Ant0 OBW NVNT 802.11n(HT20) 5180MHz Ant0 Report No.: TCT200616E047 Page 74 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com OBW NVNT 802.11n(HT20) 5200MHz Ant0 OBW NVNT 802.11n(HT20) 5240MHz Ant0 Report No.: TCT200616E047 Page 75 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com OBW NVNT 802.11n(HT20) 5745MHz Ant0 OBW NVNT 802.11n(HT20) 5785MHz Ant0 Report No.: TCT200616E047 Page 76 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com OBW NVNT 802.11n(HT20) 5825MHz Ant0 OBW NVNT 802.11n(HT40) 5190MHz Ant0 Report No.: TCT200616E047 Page 77 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com OBW NVNT 802.11n(HT40) 5230MHz Ant0 OBW NVNT 802.11n(HT40) 5755MHz Ant0 Report No.: TCT200616E047 Page 78 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com OBW NVNT 802.11n(HT40) 5795MHz Ant0 Report No.: TCT200616E047 Page 79 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 6dB Bandwidth Condition Mode Frequency (MHz) Antenna -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT 802.11a 5745 Ant0 16.51 0.5 Pass NVNT 802.11a 5785 Ant0 16.52 0.5 Pass NVNT 802.11a 5825 Ant0 16.52 0.5 Pass NVNT 802.11n(HT20) 5745 Ant0 17.70 0.5 Pass NVNT 802.11n(HT20) 5785 Ant0 17.67 0.5 Pass NVNT 802.11n(HT20) 5825 Ant0 17.68 0.5 Pass NVNT 802.11n(HT40) 5755 Ant0 36.43 0.5 Pass NVNT 802.11n(HT40) 5795 Ant0 36.43 0.5 Pass -6dB Bandwidth NVNT 802.11a 5745MHz Ant0 -6dB Bandwidth NVNT 802.11a 5785MHz Ant0 Report No.: TCT200616E047 Page 80 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com -6dB Bandwidth NVNT 802.11a 5825MHz Ant0 -6dB Bandwidth NVNT 802.11n(HT20) 5745MHz Ant0 Report No.: TCT200616E047 Page 81 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com -6dB Bandwidth NVNT 802.11n(HT20) 5785MHz Ant0 -6dB Bandwidth NVNT 802.11n(HT20) 5825MHz Ant0 Report No.: TCT200616E047 Page 82 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com -6dB Bandwidth NVNT 802.11n(HT40) 5755MHz Ant0 -6dB Bandwidth NVNT 802.11n(HT40) 5795MHz Ant0 Report No.: TCT200616E047 Page 83 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT200616E047 Page 84 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Maximum Power Spectral Density Level Condition Mode Frequency (MHz) Antenna Max PSD (dBm) Limit (dBm) Verdict NVNT 802.11a 5180 Ant0 6.331 17.0 Pass NVNT 802.11a 5200 Ant0 6.022 17.0 Pass NVNT 802.11a 5240 Ant0 6.242 17.0 Pass NVNT 802.11a 5745 Ant0 5.631 30.0 Pass NVNT 802.11a 5785 Ant0 6.075 30.0 Pass NVNT 802.11a 5825 Ant0 4.914 30.0 Pass NVNT 802.11n(HT20) 5180 Ant0 6.244 16.79 Pass NVNT 802.11n(HT20) 5200 Ant0 5.981 16.79 Pass NVNT 802.11n(HT20) 5240 Ant0 6.471 16.79 Pass NVNT 802.11n(HT20) 5745 Ant0 5.021 28.79 Pass NVNT 802.11n(HT20) 5785 Ant0 5.224 28.79 Pass NVNT 802.11n(HT20) 5825 Ant0 4.634 28.79 Pass NVNT 802.11n(HT40) 5190 Ant0 3.019 16.79 Pass NVNT 802.11n(HT40) 5230 Ant0 3.102 16.79 Pass NVNT 802.11n(HT40) 5755 Ant0 0.581 28.79 Pass NVNT 802.11n(HT40) 5795 Ant0 0.904 28.79 Pass Report No.: TCT200616E047 Page 85 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com PSD NVNT 802.11a 5180MHz Ant0 PSD NVNT 802.11a 5200MHz Ant0 PSD NVNT 802.11a 5240MHz Ant0 Report No.: TCT200616E047 Page 86 of 134 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com PSD NVNT 802.11a 5745MHz Ant0 PSD NVNT 802.11a 5785MHz Ant0 Report No.: TCT200616E047 Page 87 of 134 H…

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