2AHN6-KBWS1062.4G Wireless Vin Keypad-AC

Keypad: FCC ID: 2AHN6-KBWS106 Dongle: FCC ID: 2AHN6-DE3 Keypad: FCC ID: 2AHN6-KBWS106 Dongle: FCC ID: 2AHN6-DE3

Bytech NY Inc. 2585 West 13th Street, Brooklyn NY 11223, New York, United States Tel: 001-718-449-3700 | Fax: 001-718-449-2488 E-mail: [email protected] Date: 2024-07-30 To: FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 We, Bytech NY Inc. hereby declare that： Product Name: 2.4G Wireless Vin Keypad-AC Model No.: BY-KB-WS-106-AC, BY-KB-WS-107-AC FCC ID: 2AHN6-KBWS106 For marketing purpose, this product only supports 2.4G FHSS (2402-2480MHz). The other functions was disabled to use by manufacturer in the software, the end user has no capability to activate it. . Sincerely Yours, Signature: Printed Name: Soli Mizrahi Title: President

CFR 47 §2.911(d)(5)(i) Attestation Letter Bytech NY Inc. 2585 West 13th Street, Brooklyn NY 11223, New York, United States Tel: 001-718-449-3700 | Fax: 001-718-449-2488 E-mail: [email protected] Attestation Letter Date: 2024-07-30 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i) Filing FCC ID: 2AHN6-KBWS106 Bytech NY Inc. certifies that the equipment for which authorization is sought, is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, Signature: Printed Name: Soli Mizrahi Title: President

CFR 47 §2.911 (d)(5)(ii) Attestation Letter Bytech NY Inc. 2585 West 13th Street, Brooklyn NY 11223, New York, United States Tel: 001-718-449-3700 | Fax: 001-718-449-2488 E-mail: [email protected] Attestation Letter Date: 2024-07-30 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(ii) Filing FCC ID: 2AHN6-KBWS106 Bytech NY Inc. certifies that as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, Signature: Printed Name: Soli Mizrahi Title: President

U.S. AGENT LETTER OF ATTESTATION Date: 2024-07-30 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID: 2AHN6-KBWS106 Bytech NY Inc. certifies that, as of the date of the filing of the application, Bytech NY Inc. is our designated U.S. agent for service of process for the above referenced FCC ID. Bytech NY Inc. accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Bytech NY Inc. accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent and Applicant Information: Name: Bytech NY Inc. Address: 2585 West 13th Street, Brooklyn NY 11223, New York, United States FRN: 0025388125 Tel.: 001-718-449-3700 Email: [email protected] Signed by (printed name): Soli Mizrahi Signature:

Antenna RF-Tranceiver M C U BAT Low Power Check Circul Boost 2.8V LED Key check Switch YC1028-A 2402-2480MHz 24MHz Crystal

Bytech NY Inc. 2585 West 13th Street, Brooklyn NY 11223, New York, United States Tel: 001-718-449-3700 | Fax: 001-718-449-2488 E-mail: [email protected] Product Similarity Declaration Date: 2024-07-30 To: FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir/Madam, We, Bytech NY Inc, hereby declare that we have a product named as 2.4G Wireless Vin Keypad-AC, (Model: BY-KB-WS-106-AC; FCC ID: 2AHN6-KBWS106) was tested by Bay Area Compliance Laboratories Corp. (Shenzhen). Meanwhile, for our marketing purpose, we would like to list a series model (BY-KB-WS-107-AC) on reports and certificate. All the models are electrically identical, only the model number, appearance and Keys are different. No other changes are made on them. The differences are detailed in the table below: Model Appearance Keys BY-KB-WS-106-AC 18 keys BY-KB-WS-107-AC 17 keys We confirm that all information above is true, and we’ll be responsible for all the consequences. Please contact me if you have any question. Sincerely Yours, Signature: Printed Name: Soli Mizrahi Title: President

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2401V84723E-RF Page 1 of 4 EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS BY-KB-WS-107-AC BY-KB-WS-106-AC Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2401V84723E-RF Page 2 of 4 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2401V84723E-RF Page 3 of 4 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2401V84723E-RF Page 4 of 4

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2401V84723E-RF EXHIBIT A - FCC ID LABEL AND LOCATION Model: BY-KB-WS-106-AC FCC ID Label FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925) Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2401V84723E-RF Model: BY-KB-WS-107-AC FCC ID Label FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925)

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2401V84723E-RF Page 1 of 3 EXHIBIT C - EUT INTERNAL PHOTOGRAPHS Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2401V84723E-RF Page 2 of 3 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2401V84723E-RF Page 3 of 3 Antenna

Circuit Description Product working rationale: Power on process: put the battery into the product, turn on the POWER button, and the product is powered on. After the battery passes through the filtering circuit, it supplies power to the MCU, Touchpad, RF, and the MCU. After the power is stable, the MCU starts the initialization process, including frequency clock setting, IO initial state setting, Touchpad module and RF module initialization. After the initialization is completed, the RF indicator LED starts to flash at a frequency of 600ms/time, indicating that it has entered the synchronization mode. Otherwise, the indicator light is always on, indicating that the RF initialization is not completed and the hardware circuit is faulty. After entering the synchronization mode, if there is a dongle receiver that has been paired with the device, it will quickly enter the working mode and the indicator light will go out. If there is no paired dongle, the device will continue in the synchronization mode for 20s before entering the low power mode. Voltage Range: DC 1.5V from battery MCU: YC1028-A Crystal: 24MHz Frequency Range: 2402-2480MHz Modulation Technique: GFSK Frequency Channel List: Channel No. Frequency (MHz) Channel No. Frequency (MHz) Channel No. Frequency (MHz) Channel No. Frequency (MHz) 1 2402 11 2422 21 2442 31 2462 2 2404 12 2424 22 2444 32 2464 3 2406 13 2426 23 2446 33 2466 4 2408 14 2428 24 2448 34 2468 5 2410 15 2430 25 2450 35 2470 6 2412 16 2432 26 2452 36 2472 7 2414 17 2434 27 2454 37 2474 8 2416 18 2436 28 2456 38 2476 9 2418 19 2438 29 2458 39 2478 10 2420 20 2440 30 2460 40 2480

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2401V84723E-RF-00 TR-EM-RF041 Page 10 of 34 Version 3.0 FCC§1.1307 (b) (1) & §2.1093- RF EXPOSURE Applicable Standard According to FCC §2.1093 and §1.1307(b) (1), 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. According to KDB 447498 D01 General RF Exposure Guidance The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where 1. f(GHz) is the RF channel transmit frequency in GHz. 2. Power and distance are rounded to the nearest mW and mm before calculation. 3. The result is rounded to one decimal place for comparison. 4. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test Exclusion. Result Mode Frequency (MHz) Maximum E- Field (dBuV/m@3 m) Maximum EIRP(dBm) Maximum EIRP (mW) Distance (mm) Calculated value Threshold (1-g SAR) SAR Test Exclusion GFSK 2402-2480 92.90 -2.30 0.59 5 0.2 3 Yes Note: EIRP = E-Field – 95.2 @3m Result: Compliant.

1 2 3 4 5 6 ABCD 6 5 4 3 2 1 D CBA Y124MHz COL10COL9 ICE VDD33 C4104 NUM-LED LVD-LED C110UF C5 NC C3 NC L1 NC ANT ROW1ROW2ROW3ROW4ROW5ROW6 COL14 COL13 COL12 VDDIO COL11 123456789 1011121314151617181920212223242526 J126PIN ROW0ROW1ROW2ROW3ROW4ROW5ROW6ROW7COL1COL2COL3COL4COL5COL6COL7COL14COL13COL12COL17COL16COL0COL9COL8COL10COL15COL11 LVD BATTERY VDD15 1.5V BATTERY Vin 1 GND 2 Vout 3 U1 2.8V L147UH VDD33 C222UF LVD D4SL-LED D6 NUM-LED R11K R21K LVD-LED NUM-LED LVD-LED R30R GPIO7 1 GPIO6 2 GPIO5 3 GPIO4 4 GPIO3 5 GPIO22 6 RSTN 7 GPIO2 8 GPIO1 9 GPIO0 10 GPIO9/ICE 11 XTALOUT 12 XTALIN 13 HVIN/VIN 14 GND 15 RF 16 GPIO8 30 USBDP 31 GPIO12 17 GPIO11 18 GPIO10 19 GPIO9 20 GPIO13 21 GPIO14 22 GPIO15 23 GPIO16 24 GPIO17 25 GPIO18 26 GPIO20 27 GPIO21 28 VDDIO 29 USBDN 32 GND 33 U2 YC1028 -A 1.5V

Note: The information marked # is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Customer model name, addresses, names, trademarks etc. are included. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report must not be used by the customer to claim product certification, approval, or endorsement by NVLAP or any agency of the U.S. Government. This report may contain data that are not covered by the NVLAP accreditation and are marked with an asterisk “▼”. Bay Area Compliance Laboratories Corp. (Shenzhen) 5F(B-West) , 6F, 7F, the 3rd Phase of Wan Li Industrial Building D, Shihua Rd, FuTian Free Trade Zone, Shenzhen, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn TR-EM-RF041 Page 1 of 34 Version 3.0 TEST REPORT Applicant Name: Bytech NY lnc. Address: 2585 West 13th Street, Brooklyn NY 11223, New York, United States Report Number: 2401V84723E-RF-00 FCC ID: 2AHN6-KBWS106 Test Standard (s) FCC PART 15.249 Sample Description Product Type: 2.4G Wireless Vin Keypad-AC Model No.: BY-KB-WS-106-AC Multiple Model(s) No.: BY-KB-WS-107-AC Trade Mark: N/A Date Received: 2024/07/16 Issue Date: 2024/08/14 Test Result: Pass ▲ ▲ In the configuration tested, the EUT complied with the standards above. Prepared and Checked By: Approved By: Jojo Guo Michelle Zeng RF Engineer RF Supervisor Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2401V84723E-RF-00 TR-EM-RF041 Page 2 of 34 Version 3.0 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ......................................................................................................................... 3 GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................. 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EUT EXERCISE SOFTWARE .......................................................................................................................................... 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 6 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 6 SUPPORT CABLE DESCRIPTIONS ................................................................................................................................... 6 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 7 SUMMARY OF TEST RESULTS ............................................................................................................................... 8 TEST EQUIPMENT LIST ........................................................................................................................................... 9 FCC§1.1307 (B) (1) & §2.1093- RF EXPOSURE ...................................................................................................... 10 APPLICABLE STANDARD ............................................................................................................................................ 10 RESULT ...................................................................................................................................................................... 10 FCC§15.203 - ANTENNA REQUIREMENT ............................................................................................................ 11 APPLICABLE STANDARD ............................................................................................................................................ 11 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 11 FCC§15.205, §15.209 & §15.249(D) - RADIATED EMISSIONS ............................................................................ 12 APPLICABLE STANDARD ............................................................................................................................................ 12 EUT SETUP ................................................................................................................................................................ 12 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP .............................................................................................. 14 TEST PROCEDURE ...........................…

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Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2401V84723E-RF Page 1 of 2 EXHIBIT D - TEST SETUP PHOTOGRAPHS Radiated Emissions View (9 kHz- 30MHz) Radiated Emissions View (30 MHz- 1 GHz) Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2401V84723E-RF Page 2 of 2 Radiated Emissions View (1-18 GHz) Radiated Emissions View (18-25 GHz)