Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com L-FKMIB01-G0BP4 BG22 platform first generation 2.4G wireless communication module L-FKMIB01-G0BP4 wireless module is a wireless module designed based on Silicon Labs RF integrated chip EFR32BG22C224F512GM32. It is a high-performance IoT wireless transceiver. The module adopts PCB antenna. in size. It can be widely used in various occasions in the field of The overall design is compact and small short-range IoT wireless communications. It has the characteristics of small size, low power consumption, fast transmission rate, strong anti-interference ability, low cost, and can support private 2.4G protocol. Product relationship description L-RFOIS01-04364-01 and L-RFOIS01-04364-02 are product forms with specific software functions for this hardware module. The following product performance characteristics and other indicators are also applicable to L-RFOIS01-04364-01 and L-RFOIS RFOIS01-04364-02 product. Features Working frequency
- Working frequency band 2400 ~ 2483.5MHz Various modulation methods
-Support 2FSK, GFSK, MSK, OQPSK and other modulation methods Ultra low power consumption
- Support 1.8V to 3.8V power supply
- Transmit mode current 6.5mA (@1dBm transmit power, DC-DC mode, whole machine current)
- Receive mode current 5mA (DC-DC mode, whole machine current)
- 1.5uA sleep current High link budget
- Sensitivity -103dBm1dBm(@250kbps, 125kHz dev)
- 6dBm(typ.)Transmit power Max. 6dBm(typ.) Size
- 17.3*28.0*2.3mm Transmission distance
- Reliable transmission distance greater than 15m@250kbps 62.5KHz DEV 2FSK Supporting agreement
- Can support private 2.4G protocol, users can customize development Applicable scene
- Industrial remote sensing, telemetry communication
- Smart home
- Home wireless security alarm system
- Consumer electronics wireless applications, wireless mouse and keyboard, etc. 1 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com Copyright Affirmation:
This documentation is copyrighted by Kohler Company and anyone will be legally responsible for copying and reprinting the documentation without the permission of our company. Copyright Kohler Canada Co., and all rights reserved. Copyright Kohler Canada Co. Conformity FCC regulatory conformance This device complies with Part 1 5 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may cause undesired operation. interference in a residential NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a interference to radio or particular this equipment does cause harmful the television reception, which can be determined by turning the equipment off and on, user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver. installation. installation. If
-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modications to this equipment. Such modications could void the users authority to operate the equipment. FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. 2 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com 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. module FCC ID:N82-KOHLER051. Additionally, the following statement should be included The OEM must comply with the FCC labeling requirements. If the modules 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 on the label and in the final product s user manual: This device complies with Part 1 5 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interferences, and
(2) interference undesired operation. device must interference that may including received, accept cause any this The module is installed in portable, mobile or fixed applications. Separate approval is required for all other operating configurations, configurations. including portable configuration with respect to Part 2.1093 and different antenna 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 collocated transmitters not previously granted together. requirements;
transmissions simultaneous independent and
(C) for it This Module is full modular approval, 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. Integrator has to assure compliance of the entire end product include the integrated Module. Additional
( OEM) measurements ( 1 5 B) and/ or equipment authorizations ( e. g. Verification) may need to be addressed depending on co- location or simultaneous transmission issues if applicable. Integrator is reminded to assure that these installation instructions will not be made available to the end user
( OEM) Requirement per KDB996369 D03 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 Explanation: This module meets the requirements of FCC part 15C (15.249). 2.3 Summarize the specific operational use conditions Describe use conditions that are applicable to the modular transmitter, including for example any limits on if point-to-point antennas are used that require reduction in power or antennas, etc. For example, compensation for cable loss, then this information must be in the instructions. If the use condition limitations 3 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com extend to professional users, then instructions must state that this information also extends to the host manufacturers 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. Explanation: The EUT has a PCB Antenna, and the antenna use a permanently attached antenna which is not replaceable. 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 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. Explanation: The module is not a limited module. 4 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com 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. 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 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 In this case, a Class II permissive change grantee that they wish to change the antenna trace design. 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. Explanation:
Yes, The module with trace antenna designs, and this manual has been shown the layout of trace design, antenna, connectors, and isolation requirements. 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 persons 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). Explanation: This module complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This module is designed to comply with the FCC statement, FCC ID is: N82-KOHLER051. 5 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com 2.7 Antennas A list of antennas included in the application for certification must be provided in the instructions. For modular transmitters approved as limited modules, all applicable professional installer instructions must be included as part of the information to the host product manufacturer. The antenna list shall also identify the antenna types (monopole, PIFA, dipole, etc. (note that for example an omni-directional antenna is not considered to be a specific antenna type)). For situations where the host product manufacturer is responsible for an external connector, for example with an RF pin and antenna trace design, the integration instructions shall inform the installer that unique antenna connector must be used on the Part 15 authorized transmitters used in the host product. The module manufacturers shall provide a list of acceptable unique connectors. Explanation: The EUT has a PCB Antenna, and the antenna use a permanently attached antenna which is unique. 2.8 Label and compliance information Grantees are responsible for the continued compliance of their modules to the FCC rules. This includes advising host product manufacturers that they need to provide a physical or e-label stating Contains FCC ID with their finished product. See Guidelines for Labeling and User Information for RF DevicesKDB Publication 784748. Explanation: The host system using this module, should have label in a visible area indicated the following texts: Contains FCC ID:N82-KOHLER051, Contains IC:4554A-KOHLER051 2.9 Information on test modes and additional testing requirements5 Additional guidance for testing host products is given in KDB Publication 996369 D04 Module Integration Guide. Test modes should take into consideration different operational conditions for a stand-alone modular transmitter in a host, as well as for multiple simultaneously transmitting modules or other transmitters in a host product. The grantee should provide information on how to configure test modes for host product evaluation for different operational conditions for a stand-alone modular transmitter in a host, versus with multiple, simultaneously transmitting modules or other transmitters in a host. Grantees can increase the utility of their modular transmitters by providing special means, modes, or instructions that simulates or characterizes a connection by enabling a transmitter. This can greatly simplify a host manufacturer's determination that a module as installed in a host complies with FCC requirements. Explanation: Top band can increase the utility of our modular transmitters by providing instructions that simulates or characterizes a connection by enabling a transmitter. 6 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com 2.10 Additional testing, Part 15 Subpart B disclaimer The grantee should include a statement that the modular transmitter is only FCC authorized for the specific rule parts (i.e., FCC transmitter rules) listed on the grant, and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. If the grantee markets their product as being Part 15 Subpart B compliant ( when it also contains unintentional-radiator digital circuity), then the grantee shall provide a notice stating that the final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed. Explanation: The module without unintentional-radiator digital circuity, so the module does not require an evaluation by FCC Part 15 Subpart B. The host should be evaluated by the FCC Subpart B. RF Exposure This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. 7 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com IC labeling requirement for the final end product:
The final end product must be labeled in a visible area with the following Contains IC:4554A-KOHLER051 The Host Marketing Name (HMN) must be indicated at any location on the exterior of the host product or product packaging or product literature, which shall be available with the host product or online. This radio transmitter [lC:4554A-KOHLER051] has been approved by Innovation, Science and Economic Development Canada to operate with the antenna types listed below, with the maximum permissible gain indicated. Antenna types not included in this list that have a gain greater than the maximum gain indicated for any type listed are strictly prohibited for use with this device. Frequency range 2400-2483.5MHz Manufacturer Peak gain Impedance Antenna type KOHLER CO.
-3.8dBi 50 PCB Antenna IC regulatory conformance This device complies with CAN ICES-003 (B)/NMB-003(B). This device complies with Industry Canada licence-exempt RSS standard(s). 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. Cet appareil est conforme la norme CAN ICES-003 (B)/NMB-003 (B). Le prsent appareil est conforme aux CNR d'Industrie Canada 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 susceptible d'en compromettre le fonctionnement. le brouillage est RF Exposure Cet quipement est conforme aux limites d exposition aux rayonnements de la IC tablies pour unenvironnement non contr. 8 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com Revision Histories Revision Date Change Description Rev01 Rev02 Rev03 Rev04 2022-03-23 2022-04-20 2022-09-09 2022-10-28 Initial Revision Supplement FCC&IC warning Modifying the PCB Antenna Layout The manufacturer information is updated to Kohler 9 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com 1 Specification Parameter Form 1-1 Module limit parameters Major Parameter Working Voltage (V) Maximum RF input powerdBm Working Temperature () Performance Min. Value Max. Value
-0.5
-40
+3.8
+10
+85 Form 1-2 Module Working Parameter Major Parameter Working VoltageV Working Temperature Initial Frequency Deviation(KHz) Working Frequency Range(MHZ) Performance 1 Min. Typical Max. 1.8
-40
-27 3.3
3.8 85
+27 2400 2483.5 Power TX(mA) RX(mA) Sleep(uA)
Transmit power (dBm) Receiving sensitivity(dBm) 6.5 5 1.5 1 8.5 6.5 3 6
-104
-103
-102 The customer can customize the working frequency DC-DC mode, 1dBm transmit, module current DC-DC mode, module current module current The customer can customize the transmit power
@FSK modulation,BER <0.1%;
Deviation:125KHz, Data rate: 250kbps Data rate FSKbps
2M User programmable customization Modulation GFSK/2FSK/MSK/OQPSK User programmable customization Interface Type Stamp holes 1.27 mm pitch Overall dimensions (mm) Refer to Drawing 2-1 for more information
10 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com Dimension accuracy Grade GB / T 1804-C In conformity with the requirements of dimensional tolerance Grade C 2 Dimensional Drawing and Interface Description 2.1 Module Dimensional Drawing Drawing 2-1 Dimensional Drawing for L-FKMIB01-G0BP4 PCBA (Unit: mm) 2.2 Real Module Drawing 11 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com Figure 2-2 Physical map of the module TOP side Figure 2-3 Physical map of the module BOTTOM side 3 Interface Description 3.1 Pin Definition Pin P1 P2 P3 Form Function 3-1 Pin Definition Remarks VCC SWCLK SWDIO Power supply Programmed Programmed 12 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 RESETn Reset pin, active low GND GND PB00 PA00 PA03 PA04 PA05 PA06 PC00 PC01 PC02 PB01/RX PB02/TX PC03 GND GND GND GND VCC Ground Ground General I/O port, user-defined function, see chip manual for details General I/O port, user-defined function, see chip manual for details General I/O port, user-defined function, see chip manual for details General I/O port, user-defined function, see chip manual for details General I/O port, user-defined function, see chip manual for details General I/O port, user-defined function, see chip manual for details General I/O port, user-defined function, see chip manual for details General I/O port, user-defined function, see chip manual for details General I/O port, user-defined function, see chip manual for details UART RX, can be used as general I/O port, user-defined function, see chip manual for details UART RX, can be used as general I/O port, user-defined function, see chip manual for details General I/O port, user-defined function, see chip manual for details Ground Ground Ground Ground Power supply 13 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com 3.2 Other Pin Definitions Form Function LEDRed LEDGreen Pin Definition 3-2 Other pin definitions Remarks PC04 PC05 Pull high to enable Pull high to enable Note: LED is only controlled internally by MCU, not module stamp hole interface. After the LED is lit, the current consumption is about 4~5mA. 4 Basic Operation This module is an integrated chip of MCU and radio frequency. Users can use the software to call the API interface to control the radio frequency to realize wireless data transmission and reception, and use the MCU resources to complete the corresponding application functions. For details, please refer to the latest version of the EFR32BG22C224F512GM32 data sheet and application manual. 4.1 Hardware Layout Considerations 1. Clearance is required around the PCB antenna, leaving at least a 5mm clearance area. 2. Pay attention to the grounding amount, and it is best to ensure a large area of ground. 3. Keep away from high-voltage circuits and high-frequency switching circuits. 4. Refer to "RF PCB LAYOUT Design Rules (for sub-1GHZ and Bluetooth modules)" in the application document for layout and wiring;
14 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com 5 Notation of Annexes 5.1 The module cannot communicate at close range Confirm that the configuration on both sides of sending and receiving is inconsistent, and the different configurations cannot communicate normally. Abnormal voltage, if the voltage is too low, it will cause abnormal transmission. Low battery power, low battery voltage will be pulled down when sending, resulting in abnormal sending. Antenna welding abnormal RF signal does not reach the antenna or circuit welding error. 5.2 Abnormal power consumption of the module The module is damaged due to static electricity and other reasons, resulting in abnormal power consumption. When doing low-power reception, the timing configuration is incorrect, so that the power consumption of the module does not achieve the expected effect. The single test module or MCU is normal, but the power consumption is abnormal in the joint debugging. This is because the connection pins between the MCU and the RF module are not handled properly. The working environment is harsh, and the power consumption of the module will fluctuate in extreme environments such as high temperature, high humidity, and low temperature. 5.3 The communication distance of the module does not meet expectations Antenna impedance matching is not done well, resulting in very small transmitted power. There are objects such as metal around the antenna or the module inside the metal causes serious signal attenuation. There are other interfering signals in the test environment, which cause the communication distance of the module to be close. The module transmit power is abnormal due to insufficient power supply. The test environment is harsh, and the signal is attenuated greatly. The module communicates with the other end after passing through the wall and other environments. The wall and the like attenuate the signal greatly, and most of the signals are diffracted through the wall and the signal is attenuated greatly. The module is too close to the ground to be absorbed and reflected, resulting in poor communication. 15 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com 6 Packing 6.1 Ways of Packing Roll Foam ESD bag Technical Requirements Reference Size Technical requirements 1. 2. 3. 4. 5. The accumulative error per 10 drive holes should be within0.2;
The inner bending of 250MM shall not be higher than 1;
Loaded with the materials: black PS and thickness: 0.300.05;
Surface impedance ranges from 106 to 1011 Ohm;
23.5m accommodated:800 Pcs;
per reel and packed in 13 plastic tray; the number of elements 6. A0 and B0 shall be subject to the measurement made at the place 0.3mm away from the lowest bottom inside the cavity, K0 is the inner depth and R angle unmarked is 0.3;
The product complies with Standard EIA-481 ;
Product requirements comply with ROHS. 7. 8. Drawing 6-1 Roll Dimensional Drawing 16 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com The diagram of roll wrapping module placement direction is as follows:
Round Hole Oval Hole Drawing 6-2 Schematic Diagram of Module Placement Protective Tape Cover Tape Round Hole Recess Carrier Tape Rubber Wheel Product Information Labeling Carrier Tape Oval Hole Drawing 6-3 Packaging Diagram 17 / 18 Kohler Co. 444 Highland Drive Kohler, Wisconsin 53044 920-457-4441 kohler.com 7 Contact Us The company always aims to provide customers with the most timely and comprehensive services. If you have any product use problems, please send an email or scan the code to contact us directly!
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