FCC ID: 2A84X-FRIDGE Bluetooth module

Level: Public Information KA-HY-254104 V8DC Bluetooth BLE V4.0 UART Module Specifications

(7 pin) 16.Oct. 2019 VersionV8DC Copyright 2010-2019 SHENGRUN Technology Co., Ltd. All rights reserved. SHENGRUN Technologies assumes no responsibility for any errors which may appear in this manual, Furthermore, SHENGRUN Technologies reserves the right to alter the hardware, software, and/or specifications detailed here at any time without notice and does not make any commitment to update the information contained here. SHENGRUNs products are not authorized for use as critical components in life support devices or systems. SHENGRUN Technologies assumes no responsibility for any patents or authorized the use of intellectual property rights. The Bluetooth trademark is owned by the Bluetooth SIG Inc., USA V1.0www.tuner168.com 1 /11 1.Description KA-HY-254104 Bluetooth low energy UART protocol module is a single mode device targeted for low power sensors and accessories. KA-HY-254104 offers all Bluetooth low energy features: radio, stack, profiles and application space for customer applications. The module also provides flexible hardware interfaces to connect sensors. KA-HY-254104 can be powered directly with a standard 3V coin cell batteries or pair of AAA batteries. in lowest power shutdown mode it consumes only 0.5 uA and will wake up in few microseconds. Bluetooth ICTTC2541 6*6*0.9mm 40pin IC / use TI CC2541 IC dice KA-HY-254104 V8DC with shield case and Pre-certified RF regurations for blue tooth BQB, And can Compliance for worldwide RF Regulations, ex: Japan, Korea, CE ETSI RED, FCC etc. 1-1.APPLICATIONS:

Heart rate sensors Pedometers Watches Blood pressure and glucose meters Weight scales Key fobs Households sensors and collector devices Security tags Wireless keys (keyless go) Proximity sensors Indoor GPS broadcasting devices 1-2.KEY FEATURES:

Bluetooth BLE v.4.0 single mode compliant Supports master,slave nd master/slave modes Integrated Bluetooth low energy stack GAP, GATT, L2CAP, SMP Bluetooth low energy profiles Compliance: BQB BLE4.0, FCC, IC(Canada), CE ETSI REDetc. worldwide RF Regulations. In-System-Programmable Flash 256KB SRAM 8KB V1.0www.tuner168.com 2 /11 Low current consumption :Shutdown. No clocks running, no retention: 0.5uA(Typical) 2. KA-HY-254104 V8DC Metal wire Antenna PCBA with shield case dimension size and picture

(PCBA dimension size : 10.0*14.83*2.8 mm). 3.Module pin definition and description of input and output ports 3-1KA-HY-254104Metal wire AntennaPCBA pin map and MIC ID & Lable mark Word Type: 1.0 mm Calibri Direction: Horizon 3-2Pin function table pin No. Function Descrip. Function corresponds 1 2 3 4 5 6 REST BLE hardware reset pin (Low: reset) RX TX UART Serial data bus input UART Serial data bus output WAKEUP BLE wake up pin: Low/ wake up, High / BLE module automatically sleep INT GND Interrupt output pin BLE module grounding pin 7 VCC BLE module power supply pin, voltage range of 2.0 ~ 3.6V A: UART: serial bus, the default baud rate 115200bps, a single packet transmission is less than 17 bytes, package transmission intervals greater than 20ms. V1.0www.tuner168.com 3 /11 b:WAKEUP: BLE wake up pin, Low _wake up, High/ BLE module automatically sleep. C: RESET: BLE hardware reset pin, Low level reset. d: VCC: BLE module power supply pin voltage range DC 2.0~3.6V. e: GND: BLE module ground pin. 4. Electrical Characteristics 4-1: General Characteristics

(With Ta = 25 , VDD = 3.0V, standard measure:1Mbps , 250KHz GFSK modulation Bluetooth Low energy mode.) 1. Modulation Mode: GFSK;

2. Frequency range: 2402~2480MHZ (2.4G ISM band);

3.RF transmit power setting Range: -20 ~ +0 dBm ( programmable by software) 4. The antenna feed point RF transmit power

: -3dBm typical. (TX set Max.output characteristics) 6.The antenna feed point RF receiver sensitivity : -84dBm typical. ( PER <30.8%) 7. Operating ambient temperature range: -40 ~ + 85 ;

8. The storage temperature range: -40 ~ + 125 ;

9. The power supply voltage: 2.2 ~ 3.6VDC;

10. Receiving mode current (high gain setting): 20.02 mA (typical);

11. Transmit mode current ( at 0dBm output setting ): 18.2 mA (typical);

12. MCU law active current (only 32MHz operation of X-tal OSC): 6.7 mA (typ);

13. Power mode 1: The current consumption: (under MCU standby mode, the wake-up time = 4uS); I= 270uA (Typical);

14. Power mode 2: THE current consumption in sleep mode. timer activate / enable, wake-up time can by the programming software setting): I = 1uA

(typ);

15. Power mode 3: The current consumption :( Low power deep sleep mode, via the hardware initiative wake ): I = 0.5uA(Typical);

4-2. Absolute Maximum Ratings Note: These are absolute maximum ratings beyond which the module can be permanently damaged, these are not Maximum operating conditions, the maximum recommended operating conditions are in the table 4-4. Rating VDDS Other Terminal Voltages Storage Temperature Min

-0.3 VSS-0.3

-40 4 /11 V1.0www.tuner168.com Max 3.9 VDDS+0.3

+125 Unit V V C

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 4-3. ESD Ratings Human body model (HBM), per VESDElectrostatic ANSI/ESDA/JEDECJS001 Value Unit All pins 2000 discharge Charged device model (CDM), per RF pins JESD22-C101 Non-RFpins V 750 750

(2) CAUTION: ESD sensitive device. Precautions should be used when handing the device in order to prevent permanent damage. 4-4. Recommended Operating Conditions Supply voltage noise should be less than 10mVpp. Excessive noise at the supply voltage will reduce the RF performance. Rating VDD ( when BlueTooth Active) VDD( when flash programming) Operating Temperature Range Note:

Min 2.2 2.4

-40 Max 3.6 3.3

+85 Unit V V C

(1).VDD power supply recommended voltage : 2.7~3.3V

(2).When programming firm ware , the VDD supply voltage must in DC 2.4~3.3V, To avoid programming has not completely, or abnormal status occur..

(3).For smaller coin cell batteries, with high worst-case end-of-life equivalent source resistance, a 22-F VDDS input capacitor must be used to ensure compliance with this slew rate(6-6 timing req.). 5. Block Diagram V1.0www.tuner168.com 5 /11 6. Functional Block Diagram 7. Working mode schematic :

V1.0www.tuner168.com 6 /11 8.Metal wire antenna characteristics:

Antenna Gain : 2.657dB at 2440MHz Synthetizer: Set Frequency 2402 2440 2480 Gain . dBi 2.44 2.65 2.46 Efficiency(%) 54.50%

54.38%

49.10%

Efficiency(dB)

-2.636

-2.646

-3.089 Antenna size 8-2. 3D Radiation Pattern 8-3. X / Y / Z coordinate 8-4. Phi = 0 degree pattern 8-5. Phi = 90 degree pattern 8-6. Theda = 90 degree V1.0www.tuner168.com 7 /11 pattern V1.0www.tuner168.com 8 /11 V1.0www.tuner168.com 9 /11 The following information is shown in the users manual. Compliance Information Product Name:

Bluetooth module Model Number:

KA-HY-254104 Trade name:

Compliance This device complies with part 15 of the FCC Rules. Statement:

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. Correspondence of the responsible party in USA:

Company:

Kickass Products USA LLC Address:

9070 IRVINE CTR DR, STE. 135, IRVINE, USA 92618 Tel.:

213 652 6566 V1.0www.tuner168.com 10 /11 V1.0www.tuner168.com 11 /11

Kickass Products USA LLC Authority to Act as Agent Date: January 17, 2023 American Certification Body, Inc. 6731 Whittier Avenue Suite C110 McLean, VA 22101 To Whom It May Concern:

______Intertek Testing Service Shanghai______ 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:

January 16, 2024 By:

Title:

(Signature1) President On behalf of:

Kickass Products USA LLC

(Company Name) Telephone:

213 652 6566 Kristi Hamilton

(Print name) 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. 041521-14

Kickass Products USA LLC Request for Confidentiality Date: January 17, 2023 Subject: Confidentiality Request for: _____FCC ID: 2A84X-FRIDGE ______ Pursuant to FCC 47 CFR 0.457(d) and 0.459 and IC RSP-100, Section 12.4, the applicant requests that a part of the subject FCC application be held confidential. Type of Confidentiality Requested Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Permanent Permanent *1 Permanent Permanent Permanent Permanent Permanent *3 Exhibit Block Diagrams External Photos Internal Photos Operation Description/Theory of Operation Parts List & Placement/BOM Tune-Up Procedure Schematics Test Setup Photos Users Manual Kickass Products USA LLC has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality:

The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality:

The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of __180__ days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Applicant is also aware that they are responsible to notify ACB in the event information regarding the product or the product is made available to the public before the requested period has expired. ACB will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04-1705. NOTE for Industry Canada Applications:

IC currently only distinguishes Permanent Confidentiality exhibits as shown above. Short Term confidentiality is not considered applicable to IC applications. Sincerely, By:

(Signature/Title2) Kristi Hamilton

(Print name) 1 - The asterisked items (*) require further information to be provided to ACB before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 and the specific Document link for D01 found at:

https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. 2 - 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. 041521-14

Kickass Products USA LLC Request for Modular/Limited Modular Approval Date: January 17, 2023 Subject: Manufacturers Declaration for - Modular Approval

- Split Modular Approval

- Limited Modular Approval - Limited Split Modular Approval Confidentiality Request for: ______2A84X-FRIDGE______ 8 Basic Requirements FCC Part 15.212(a)(1) For Items Marked NO(*), the Limited Module Description Must be Filled Out on the Following Pages Modular Approval Requirement 1. The modular transmitter must have its own RF shielding. This is intended to ensure that the module Requirement Met 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)

- YES - NO(*) Details: The module contains a metal shield which covers all RF components and circuitry. The shield is located on the top of the board next to antenna connector. 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)

- YES - NO(*) Details: Data to the modulation circuit is buffered as described in the operational description provided with the application. 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)

- YES - NO(*) Details: The module contains its own power supply regulation. Please refer to schematic filed with this application. 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)

- YES - NO(*) Details: The module connects to its antenna directly. A list of antennas tested and approved with this device may be found in users manual provided with the application. 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)

- YES - NO(*) Details: The module was tested stand-alone as shown in test setup photographs filed with this application. 070920-02b Kickass Products USA LLC Modular Approval Requirement 6. The modular transmitter must be labeled with its own FCC ID number, or use an electron display (see 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)

- YES - NO(*) Details: There is a label on the module as shown in the labeling exhibit filed with this application. Host specific labeling instructions are shown in the installation manual filed with this application. 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)

- YES - NO(*) Details: The module complies with FCC Part 15C requirements. Instructions to the OEM installer are provided in the installation manual filed with this application. 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)

- YES - NO(*) Details: The module meets Portable exclusion levels as shown in the RF exposure information filed with this application. 070920-02b Kickass Products USA LLC 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 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. Requirement Met

- Provided in Separate Cover Letter

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

- Provided in Separate Cover Letter

- N/A Details: N/A Split Modular Requirements Requirement Provided in Manual 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.

- Provided in Separate Cover Letter

- N/A Details: N/A 070920-02b Kickass Products USA LLC 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 3. Limited Module Procedures. KDB 996369 D03, Section 2.4 systems, professional installation info 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: _____________________ ___ Kristi Hamilton _____________

(Signature/Title1)

(Print name) 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. 070920-02b