2AYPE-BTK10ABluetooth Keyboard

1.5uA 2). Press Fn+C, the blue light keep flashing. devices. Once it’s paired successfully, don’t need to reconnect. Welcome to choose this Bluetooth wireless keyboard. It contains built-in rechargeable. Polymer lithium ba�ery and charging indicator. The keyboard will enter sleep mode if there is not any opera�on in 10 minutes. The red light keeps on while charging. The red light will be off while fully charged 1. low ba�ery indicator (Blue light flashes every two seconds while ba�ery is on low power. 2. Power on indicator (blinking blue light when power on) 3. Power off indicator (Blue light flashes twice while switch off the keyboard) 1. Please charge at least 6 hours for the keyboard first charge. For coming procedure, it will last at least 2 hours. The red indicator keep flashing while charging. Upper and lower case indicator It flashes while searching for the device pairing. It will be off once finish connec�ng. ReturnBrightness -Brightness + Lock the touch padCopyPaste Cut Mute MailBrowser 3). Open tablet se�ngs-Bluetooth, find RATR31024K keyboard, click connect. FCC regulatory conformance 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. (2) This device must accept any interference received, including interference that may cause undesired operation. 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 interference in a residential installation. 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 particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the 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. -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 modifications to this equipment. Such modifications could void the user’s authority to operate the equipment. RF Exposure This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.

Date: 2 June 2022 E&S International Enterprises, Inc. To: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 To Whom It May Concern: The E&S International Enterprises, Inc., the undersigned, hereby authorizes Mr. Wu Xuewen from Shenzhen BALUN Technology Co., Ltd., to act on the behalf of the E&S International Enterprises, Inc. solely in matters relating to the application for an FCC equipment authorization for FCC ID: 2AYPE-BTK10A including the signing of documents in connection with this Application. Necessary acts carried out by Shenzhen BALUN Technology Co., Ltd. in connection with the Application shall have the same effect as acts of the E&S International Enterprises, Inc. The E&S International Enterprises, Inc. also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. Section 862. Yours Sincerely, ------------------------------- Ting Liu

Date: 2 June 2022 E&S International Enterprises, Inc. To: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 Re: E&S International Enterprises, Inc. FCC ID: 2AYPE-BTK10A FCC Certification Confidentiality Request Gentlemen: This letter is to comply with 47 CFR 0.457 and 0.459 pertaining to confidentiality material. E&S International Enterprises, Inc. requests that the following documents regarding this submission for FCC ID: 2AYPE-BTK10A be kept confidential: Exhibit Type File Name Block Diagram Block Diagram.pdf Schematics Schematics.pdf Operational Description Part list Operational Description.pdf BOM.pdf And below exhibit kept short-term confidential (180 days): External photos External photos.pdf Test setup photos test photo.pdf Internal photos Internal photos.pdf User manual User manual.pdf Those documents contain detailed system and equipment description and related information about the product which E&S International Enterprises, Inc. considers to be confidential proprietary, a custom design and, otherwise, not releasable to the general public. Since this design is a basis form which future technological products will evolve, E&S International Enterprises, Inc. considers this information would be of benefit to its competitors, and that the disclosure of the information in these documents would give competitors an unfair advantage in the market. Yours Sincerely, ------------------------------- Ting Liu

Report No.: BL-SZ2250073-AW 1 / 4 EUT EXTERNAL PHOTOS FRONT VIEW OF EUT REAR VIEW OF EUT Report No.: BL-SZ2250073-AW 2 / 4 LEFT VIEW OF EUT RIGHT VIEW OF EUT Report No.: BL-SZ2250073-AW 3 / 4 CLOSE-UP TOP VIEW OF EUT Report No.: BL-SZ2250073-AW 4 / 4 BOTTOM VIEW OF EUT

Label: Location:

Report No.: BL-SZ2250073-AI 1 / 3 EUT INTERNAL PHOTOS EUT UNCOVER VIEW 1 EUT UNCOVER VIEW 2 Report No.: BL-SZ2250073-AI 2 / 3 MAIN BOARD TOP VIEW MAIN BOARD REAR VIEW RF Chip PCB Antenna Report No.: BL-SZ2250073-AI 3 / 3 BATTERY (FRONT) BATTERY (REAR)

Report No.: BL-SZ2250073-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 1 / 10 Web: www.titcgroup.com Template No.: TRP-FCC-Portable (2022-04-06) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe West Road, Nanshan District, ShenZhen, GuangDong Province, China TEST REPORT Applicant: E&S International Enterprises, Inc Address: 7801 Hayvenhurst Avenue Van Nuys, California 91406, USA Equipment Type: Bluetooth Keyboard Model Name: BTK10A Brand Name: RCA FCC ID: 2AYPE-BTK10A Test Standard: 47 CFR Part 2.1093 KDB 447498 D04 Test Date： May 08, 2022 - May 12, 2022 Date of Issue: Jun. 02, 2022 ISSUED BY: Shenzhen BALUN Technology Co., Ltd. Tested by: Julie Zhu Checked by: Liyao Zong Approved by: Wei Yanquan (Chief Engineer) _______________ _______________ _______________ Report No.: BL-SZ2250073-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 2 / 10 Web: www.titcgroup.com Template No.: TRP-FCC-Portable (2022-04-06) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe West Road, Nanshan District, ShenZhen, GuangDong Province, China Revision History Version Issue Date Revisions Content Rev. 01 Jun. 02, 2022 Initial Issue TABLE OF CONTENTS 1 GENERAL INFORMATION ......................................................................................................... 3 1.1 Identification of the Testing Laboratory .......................................................................... 3 1.2 Identification of the Responsible Testing Location ......................................................... 3 2 PRODUCT INFORMATION ......................................................................................................... 4 2.1 Applicant Information ...................................................................................................... 4 2.2 Manufacturer Information ............................................................................................... 4 2.3 Factory Information ........................................................................................................ 4 2.4 General Description for Equipment under Test (EUT) ................................................... 4 2.5 Ancillary Equipment ........................................................................................................ 4 2.6 Technical Information ..................................................................................................... 5 3 SUMMARY OF TEST RESULT ................................................................................................... 6 3.1 Test Standards ............................................................................................................... 6 4 DEVICE CATEGORY AND LEVELS LIMITS .............................................................................. 7 5 ASSESSMENT RESULT ............................................................................................................. 9 5.1 Output Power ................................................................................................................. 9 5.2 Conclusion ...................................................................................................................... 9 Report No.: BL-SZ2250073-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 3 / 10 Web: www.titcgroup.com Template No.: TRP-FCC-Portable (2022-04-06) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe West Road, Nanshan District, ShenZhen, GuangDong Province, China 1 GENERAL INFORMATION 1.1 Identification of the Testing Laboratory Company Name Shenzhen BALUN Technology Co., Ltd. Address Block B, 1/F, Baisha Science and Technology Park, Shahe West Road, Nanshan District, ShenZhen, GuangDong Province, China Phone Number +86 755 6685 0100 1.2 Identification of the Responsible Testing Location Test Location Shenzhen BALUN Technology Co., Ltd. Address Block B, 1/F, Baisha Science and Technology Park, Shahe West Road, Nanshan District, ShenZhen, GuangDong Province, China Accreditation Certificate The laboratory is a testing organization accredited by FCC as a accredited testing laboratory. The designation number is CN1196. Description All measurement facilities used to collect the measurement data are located at Block B, 1/F, Baisha Science and Technology Park, Shahe West Road, Nanshan District, ShenZhen, GuangDong Province, China Report No.: BL-SZ2250073-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 4 / 10 Web: www.titcgroup.com Template No.: TRP-FCC-Portable (2022-04-06) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe West Road, Nanshan District, ShenZhen, GuangDong Province, China 2 PRODUCT INFORMATION 2.1 Applicant Information Applicant E&S International Enterprises, Inc Address 7801 Hayvenhurst Avenue Van Nuys, California 91406, USA 2.2 Manufacturer Information Manufacturer E&S International Enterprises, Inc. Address 7801 Hayvenhurst Avenue Van Nuys, California 91406, USA 2.3 Factory Information Factory HENA GROUP COMPANY LIMITED Address ROOM 2205, WESTLANDS CENTRE, 20 WESTLAND ROAD, QUARRY BAY, HONG KONG 2.4 General Description for Equipment under Test (EUT) EUT Name Bluetooth Keyboard Model Name Under Test BTK10A Series Model Name N/A Description of Model name differentiation N/A Hardware Version DST-DS1002-CA51 20220420 VER1.1.PcbDoc Software Version DST-DS1002-CA51 20220420 VER1.1.PcbDoc Dimensions (Approx.) N/A Weight (Approx.) N/A 2.5 Ancillary Equipment Ancillary Equipment 1 Battery Brand Name N/A Model No. CX303040PL-300mAh Serial No. N/A Capacity 300 mAh Rated Voltage 3.7 V Limit Charge Voltage 4.2 V Report No.: BL-SZ2250073-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 5 / 10 Web: www.titcgroup.com Template No.: TRP-FCC-Portable (2022-04-06) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe West Road, Nanshan District, ShenZhen, GuangDong Province, China 2.6 Technical Information Network and Wireless connectivity Bluetooth (BLE) The requirement for the …

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Report No.: BL-SZ2250073-601 Tel: +86-755-66850100 E-mail: [email protected] Page No. 1 / 75 Web: www.titcgroup.com Template No.: TRP-FCC Part 15.247 (2022-01-12) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe West Road, Nanshan District, ShenZhen, GuangDong Province, China TEST REPORT Applicant: E&S International Enterprises, Inc Address: 7801 Hayvenhurst Avenue Van Nuys, California 91406, USA Equipment Type: Bluetooth Keyboard Model Name: BTK10A Brand Name: RCA FCC ID: 2AYPE-BTK10A Test Standard: 47 CFR Part 15 Subpart C (refer section 3.1) Test Date： May 08, 2022 - May 12, 2022 Date of Issue: Jun. 02, 2022 ISSUED BY: Shenzhen BALUN Technology Co., Ltd. Tested by: Julie Zhu Checked by: Ye Hongji Approved by: Liao Jianming (Technical Director) _______________ _______________ _______________ Report No.: BL-SZ2250073-601 Tel: +86-755-66850100 E-mail: [email protected] Page No. 2 / 75 Web: www.titcgroup.com Template No.: TRP-FCC Part 15.247 (2022-01-12) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe West Road, Nanshan District, ShenZhen, GuangDong Province, China Revision History Version Issue Date Revisions Rev. 01 Jun. 02, 2022 Initial Issue TABLE OF CONTENTS 1 GENERAL INFORMATION ......................................................................................................... 4 1.1 Identification of the Testing Laboratory .......................................................................... 4 1.2 Identification of the Responsible Testing Location ......................................................... 4 2 PRODUCT INFORMATION ......................................................................................................... 5 2.1 Applicant Information ...................................................................................................... 5 2.2 Manufacturer Information ............................................................................................... 5 2.3 Factory Information ........................................................................................................ 5 2.4 General Description for Equipment under Test (EUT) ................................................... 5 2.5 Technical Information ..................................................................................................... 6 2.6 Additional Instructions .................................................................................................... 7 3 SUMMARY OF TEST RESULTS ................................................................................................. 8 3.1 Test Standards ............................................................................................................... 8 3.2 Test Verdict .................................................................................................................... 8 4 GENERAL TEST CONFIGURATIONS ........................................................................................ 9 4.1 Test Environments ......................................................................................................... 9 4.2 Test Equipment List ........................................................................................................ 9 4.3 Test Software List ........................................................................................................... 9 4.4 Measurement Uncertainty ............................................................................................ 10 4.5 Description of Test Setup ............................................................................................. 10 4.6 Measurement Results Explanation Example ................................................................ 13 5 TEST ITEMS .............................................................................................................................. 14 5.1 Antenna Requirements ................................................................................................. 14 5.2 Output Power ............................................................................................................... 15 5.3 Occupied Bandwidth .................................................................................................... 17 Report No.: BL-SZ2250073-601 Tel: +86-755-66850100 E-mail: [email protected] Page No. 3 / 75 Web: www.titcgroup.com Template No.: TRP-FCC Part 15.247 (2022-01-12) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe West Road, Nanshan District, ShenZhen, GuangDong Province, China 5.4 Conducted Spurious Emission ..................................................................................... 18 5.5 Band Edge (Authorized-band band-edge) .................................................................... 20 5.6 Conducted Emission .................................................................................................... 22 5.7 Radiated Spurious Emission ........................................................................................ 23 5.8 Band Edge (Restricted-band band-edge) ..................................................................... 28 5.9 Power Spectral density (PSD) ...................................................................................... 29 ANNEX A TEST RESULT ............................................................................................................. 30 A.1 Output Power, Duty Cycle ............................................................................................ 30 A.2 Occupied Bandwidth .................................................................................................... 34 A.3 Conducted Spurious Emissions ................................................................................... 38 A.4 Band Edge (Authorized-band band-edge) .................................................................... 45 A.5 Conducted Emissions ........................................................................................…

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Report No.: BL-SZ2250073-AR 1 / 5 TEST SETUP PHOTOS 1 Radiated Test Photo Below 30MHz Close-up Report No.: BL-SZ2250073-AR 2 / 5 30MHz-1GHz Close-up Report No.: BL-SZ2250073-AR 3 / 5 Above 1GHz Close-up Report No.: BL-SZ2250073-AR 4 / 5 2 Conducted Test Photo 3 Conducted Emissions Test Photo 1 Report No.: BL-SZ2250073-AR 5 / 5 Test Photo 2