FCC ID: 2ARNB-HM2401 2.4G RF Module

nRF Module User Manual

(Model: HM2401) INTRODUCTION This manual contains important instructions for HM2401 and must be read in its entirety before installing or commissioning the equipment. For safety, only qualified technician, who has received training or has demonstrated skills can install and maintain this device under the guide of this document. Contact Information Hoymiles Power Electronics Technology Co. , Ltd. No.18 Kangjing Road, Hangzhou, Zhejiang Province, China Phone: +86-571-28056101 Fax: +86-571-28056137 http://www.hoymiles.com Hoymiles can provide commissioning. Please contact Hoymiles customer service at 086-0571-89775158.More information at website:http://www.hoymiles.com 2 Table of Contents INTRODUCTION ..................................................................................................................... 2 1. Important Safety Information .......................................................................................... 4 Read this First ................................................................................................................... 4 Safety Instructions ............................................................................................................ 4 Audience ............................................................................................................................ 4 2. Module Interfaces ............................................................................................................. 5 2.1 HM2401 Dimensions ................................................................................................. 5 2.2 Pin Definition .............................................................................................................. 5 3. Integration Instructions .................................................................................................... 6 3.1 List of applicable FCC rules ..................................................................................... 6 3.2 Summarize the specific operational use conditions ............................................. 6 3.3 Limited module procedures ...................................................................................... 7 3.4 Trace antenna designs ............................................................................................. 7 3.5 RF exposure considerations .................................................................................... 7 3.6 Antennas ..................................................................................................................... 7 3.7 Label and compliance information .......................................................................... 7 3.8 Information on test modes and additional testing requirements ........................ 8 3.9 Additional testing, Part 15 Subpart B disclaimer .................................................. 8 4. Basic Operation ................................................................................................................ 9 4.1 NRF Channel List ...................................................................................................... 9 5. Troubleshooting .............................................................................................................. 10 6. Technical Data ................................................................................................................ 10 3 1. Important Safety Information Read this First This manual contains important instructions to follow during installation and maintenance of the nRF module. Safety Instructions Only qualified personnel can install or replace the nRF module. Do not attempt to repair the module as it contains the parts that are not serviceable to users. If the module breaks down, please contact your distributor for maintenance. Opening the module without permission will invalidate the warranty. Please read all technical instructions and cautions in this manual before installing and using the module. Audience This manual is only for professional installation and maintenance personnel to use. 4 2. Module Interfaces 2.1 HM2401 Dimensions HM2401 dimensions: 19.7mm(W)*32.8mm(L)*3.5mm(H) Figure 1 shows the HM2401 dimensions. Figure 1 HM2401 dimensions 2.2 Pin Definition This Table 1 describes the interface pins . NO. Symbol I/O Type Function 1 2 3 4 5 Gnd NC P1.5 P1.6 P I I/O I/O Power supply reference ground pin Null pin, no internal connection RESERVED, P1.5, which is connected to P1.5 on the IC RESERVED, P1.6, which is connected to P1.6 on the IC P0.1 I/O RESERVED ,P0.1, which is connected to P0.1 on 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 P0.6 SCK GND RXD TXD GND VCC PRG SCK MO MI SCN RST GND GND the IC I/O I/O P I/O RESERVED, P0.6, which is connected to P0.6 on the IC Serial peripheral interface clock pin Power supply reference ground pin UART_RX, which is connected to P0.4 on the IC Output UART_TX, which is connected to P0.3 on the IC P P I/O I/O O I I/O I/O P P Power supply reference ground pin Power supply pin Set high to enter flash programming mode Serial peripheral interface clock pin Serial peripheral interface data output pin Serial peripheral interface data input pin Serial peripheral interface Chip selection pin Hardware reset pin (active at a low level) Power supply reference ground pin Power supply reference ground pin Table 1 HM2401 interface pins 3. Integration Instructions 3.1 List of applicable FCC rules This module has been tested and found to comply with part 15C requirements for Modular Approval. 3.2 Summarize the specific operational use conditions This module can be used in DTU, micro-converter and other equipment. The input voltage to the module should be nominally 1.9~3.6 VDC and the ambient temperature of the module should not exceed 80. HM2401 uses a PCB antenna with max antenna gain 2dBi. If the antenna needs to be changed, the certification should be re-applied. 6 3.3 Limited module procedures NA 3.4 Trace antenna designs NA 3.5 RF exposure considerations This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment .This equipment should be installed and operated with minimum distance 20cm between the radiator& your body. If the device built into a host as a portable usage, the additional RF exposure evaluation may be required. 3.6 Antennas Antenna Type PCB antenna Peak Gain 2dBi 3.7 Label and compliance information When the module is installed in the host device, the FCC ID/IC label must be visible through a window on the final device or it must be visible when an access panel or cover is easily re-moved. If not, a second label must be placed on the outside of the final device that contains the following text: Contains FCC ID: 2ARNB-HM2401 Contains IC: 24490-HM2401. The FCC ID/IC can be used only when all FCC ID/IC compliance requirements are met. 7 3.8 Information on test modes and additional testing requirements a) The modular transmitter has been fully tested by the module grantee on the required number of channels, modulation types, and modes, it should not be necessary for the host installer to re-test all the available transmitter modes or settings. It is recommended that the host product manufacturer, installing the modular transmitter, perform some investigative measurements to confirm that the resulting composite system does not exceed the spurious emissions limits or band edge limits (e.g., where a different antenna may be causing additional emissions). b) The testing should check for emissions that may occur due to the intermixing of emissions with the other transmitters, digital circuitry, or due to physical properties of the host product (enclosure). This investigation is especially important when integrating multiple modular transmitters where the certification is based on testing each of them in a stand-alone configuration. It is important to note that host product manufacturers should not assume that because the modular transmitter is certified that they do not have any responsibility for final product compliance. c) If the investigation indicates a compliance concern the host product manufacturer is obligated to mitigate the issue. Host products using a modular transmitter are subject to all the applicable individual technical rules as well as to the general conditions of operation in Sections 15.5, 15.15, and 15.29 to not cause interference. The operator of the host product will be obligated to stop operating the device until the interference have been corrected. 3.9 Additional testing, Part 15 Subpart B disclaimer The final host/module combination need to be evaluated against the FCC Part 15B criteria for unintentional radiators in order to be properly authorized for operation as a Part 15 digital device. 8 The host integrator installing this module into their product must ensure that the final composite product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules. When testing the host product, all the transmitters must be operating. The transmitters can be enabled by using publicly-available drivers and turned on, so the transmitters are active. In certain conditions, it might be appropriate to use a technology-specific call box (test set) where accessory devices or drivers are not available. When testing for emissions from the unintentional radiator, the transmitter shall be placed in the receive mode or idle mode, if possible. If receive mode only is not possible then, the radio shall be passive (preferred) and/or active scanning. In these cases, this would need to enable activity on the communication BUS (i.e., PCIe, SDIO, USB) to ensure the unintentional radiator circuitry is enabled. Testing laboratories may need to add attenuation or filters depending on the signal strength of any active beacons(if applicable) from the enabled radio(s). FCC Statment:

Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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. 4. Basic Operation 4.1 NRF Channel List Depending on the program, the module can work on 2403, 2423, 2440, 2461 or 2475MHz. Unless necessary, its forbidden to change the module program. 9 5. Troubleshooting If the nRF module cant work well, please follow this guideline:

a) Try to repower on the device. If the LED on the module cant light, please change the module or send the whole device to us. If the LED can light, please change the antenna. b) c) After changing the antenna, if it still cant work, please change the module or send the whole device to us. 6. Technical Data Model Type Channel List Modulation Type Antenna Gain Working Voltage Power Consumption HM2401 2.4G RF 2403, 2423, 2440, 2461, 2475MHz GFSK 2dBi 1.9~3.6V 40mW typical ISED RSS Warning:

This device complies with Innovation, Science and Economic Development Canada licence-

exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Le prsent appareil est conforme aux CNR d'ISED applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes:

(1) l'appareil ne doit pas produire de brouillage, et

(2) l'utilisateur de l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. ISED RF exposure statement:

This equipment complies with ISED radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Le rayonnement de la classe b repecte ISED fixaient un environnement non contrls.Installation et mise en uvre de ce matriel devrait avec changeur distance minimale entre 20 cm tonon corps.Lanceurs ou ne peuvent pas coexister cette antenne ou capteurs avec dautres. 10

Company: Hoymiles Converter Technology Co., Ltd. Add: No. 18 Kangjing Road, HangZhou, Zhejiang Province, China Tel: 18606510925 Fax: 0571-89775160 FCC Authorization Date: 2019-11-21 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern:

We, Hoymiles Converter Technology Co., Ltd., Hereby authorizes Bay Area Compliance Laboratories Corporation to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a 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. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature:

Typed or Printed Name: Hongbin Yu Title: Senior Engineer QA-FR-170-B

Company: Hoymiles Converter Technology Co., Ltd. Add: No. 18 Kangjing Road, HangZhou, Zhejiang Province, China Tel: 18606510925 Fax: 0571-89775160 E-mail: bigyu@hzconverter.com FCC Confidential Authorization Date: 2019-11-21 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2ARNB-HM2401 To: whom it may concern, In accordance with Sections 0.457 and 0.459 of the Commissions Rules, Hoymiles Converter Technology Co., Ltd. hereby requests long-term confidential treatment of information accompanying this application as outlined below:

Block Diagram Schematics Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature:

Typed or Printed Name: Hongbin Yu Title: Senior Engineer

Company: Hoymiles Converter Technology Co., Ltd. Add: No. 18 Kangjing Road, HangZhou, Zhejiang Province, China Tel: 18606510925 Fax: 0571-89775160 E-mail: bigyu@hzconverter.com DECLARATION FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: 2019-11-21 Dear Sir or Madam:

We, Hoymiles Converter Technology Co., Ltd. hereby declare that product name: 2.4G RF Module

(model name: HM2401, HM2401A. FCC ID: 2ARNB-HM2401). HM2401 and HM2401A are electrically identical with the PCB design,components and electromagnetic compatibility characteristics. HM2401 and HM2401A have been tested by BACL. The differences of them are as follows:

1. Model name 2. Antenna type is different:

HM2401's antenna is PCB antenna; HM2401A's antenna is PCB antenna with IPEX connector. HM2401 HM2401A Please contact me if there is need for any additional clarification or information. Best Regards, Signature:

Typed or Printed Name: Hongbin Yu Title: Senior Engineer

Company: Hoymiles Converter Technology Co., Ltd. Add: No. 18 Kangjing Road, HangZhou, Zhejiang Province, China Tel: 18606510925 Fax: 0571-89775160 E-mail: bigyu@hzconverter.com Applicant FCCID:

Hoymiles Converter Technology Co., Ltd. 2ARNB-HM2401 Section15.212ModularTransmitters RequestforModularApproval Requirements RequestforLimitedModularApproval EUTConditions Comply(Y/N) SingleModularApprovalRequirements 1 2 3 4 The radio elements of the modular transmittermusthavetheirownshielding. The physical crystal and tuning capacitors may be located external to the shielded radioelements. Refer to external photos. Thismodule has shield cover. Y Y Y Y The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the comply with part 15 module will requirements under of excessivedataratesorovermodulation. conditions All inputs to the modules are buffered through logic ormicroprocessorinputs. RefertoSchematics. The Module uses the chip NRF24LE1 with built-in power management components, the module rated power is 3.3V power, Refer to schematics. The modular transmitter has a PCB antenna/PCB antenna with IPEX arrangement for SRD, Refer to EUT photo. The modular transmitter must have itsownpowersupplyregulation. The modular transmitter must comply withtheantennaandtransmissionsystem requirements of 15.203, 15.204(b) and 15.204(c). The antenna must either be permanently attached or employ a unique all connectionsbetweenthemoduleandthe antenna, cable). The installation provision of professional 15.203 is not applicable to modules but can apply to limited modular approvals underparagraph(b)ofthissection. including antenna coupler the

(at Y Themodulartransmitter isconnectedtothe controlledboardwhen testing. Pleaserefertosetup photo. Refertothelabel. Y 5 6 part with The modular transmitter must be testedinastandaloneconfiguration, i.e., the module must not be inside another device during testing for compliance 15 requirements.Unlessthetransmitter module will be battery powered, it line must comply with the AC conducted requirements found in 15.207. AC or DC power lines and datainput/outputlinesconnectedto the module must not contain ferrites,unlesstheywillbemarketed withthemodule(see15.27(a)).The length of these lines shall be the lengthtypicalofactualuseor,ifthat length least 10 centimeterstoinsurethatthereisno coupling between the case of the module and supporting equipment. Any accessories, peripherals, or supportequipmentconnectedtothe testing shall be module during unmodified commercially available(see15.31(i)). is unknown, at and its modular transmitter installed must also If using a permanently affixed label, must the be labeled with own FCC identificationnumber,and,ifthe FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is display a label referring to the enclosed module.This exterior label can use wording such as following:ContainsTransmitterModule FCCID:2ARNB-HM2401Any similarwording that expresses the same meaning may be used. The Granteemay either provide such a label, an example of which must be included the in the application for equipment authorization, or, must provide adequateinstructionsalongwiththe module this requirement. In the latter case, a copy of these instructions must be included for equipmentauthorization. the application explain which in 7 8 Refertomanual Y requirements transmitter must The modular comply with any specific rules or operating that ordinarily apply to a complete transmitter and the manufacturer must provide adequate instructions alongwiththemoduletoexplainany such requirements. A copy of these instructions must be included in the application equipment authorization. for The modular transmitter must comply with any applicable RF exposure requirements in its final configuration. Y The EUT meets RF exposure evaluation 2.1091, If the device built into a host as a portable usage, the additional RF exposure evaluation may be required as specified by 2.1093 Sincerely, Signature:

Typed or Printed Name: Hongbin Yu Title: Senior Engineer