XEN-CKWRF Keyboard

The CKW has been paired to the provided dongle, it is ready to use; below instruction is only for user who may want to pair the dongle again: 1.Plug the RF dongle into the target PC. 2. Place the CKW close to the dongle, within 20cm. 3. Now you can get the CKW ready by pressing “Fn+ESC” to switch the CKW into pairing mode. 4.The LED will keep flashing until the pairing process complete; when LED stop flashing, keyboard is ready to use. Special function keys on CKW 5.Fn + ESC = Pair 6.Fn + WIN = App 7.Fn + F10 = Print screen 8.Fn + F11 = Scroll Lock 9.Fn + F12 = Pause 10.Fn + Delete = Insert 11.Fn + Right Shift = Disabling the typing function for keyboard cleaning, press Fn + Right Shift again to unlock 12.Fn + Up arrow = Page up 13.Fn + down arrow = Page down 14.Fn + left arrow = Home 15.Fn + right arrow = End Charging the CKW 1.Using the provided USB cable and connect the CKW to a USB2.0 port, the keyboard will being charged immediately, 5 hours is recommended for fully charging the CKW 2.During charging, if the CKW is connecting to a PC USB port via a USB cable, the CKW will be working as a HID keyboard. 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 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.

Heng Yu Electronic Manufacturing Co. Ltd. Agent Authorization Company: Heng Yu Electronic Manufacturing Co. Ltd. Address: Room 1503-5, Nan Fung Commercial Centre,19 Lam Lok Street, Kowloon Bay, Hong Kong Product Name: RF Keyboard Model Number(s): CKW Product Description: RF Keyboard We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2020-12-15 Name: H.K. Chan Company: Heng Yu Electronic Manufacturing Co. Ltd.

Heng Yu Electronic Manufacturing Co. Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020-12-14 Subject; Request for Confidentiality FCC ID: XEN-CKW To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely Heng Yu Electronic Manufacturing Co. Ltd. Contact person: H.K. Chan

External Photos ALL VIEW OF EUT TOP VIEW OF EUT BOTTOM VIEW OF EUT FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT RIGHT VIEW OF EUT VIEW OF EUT (PORT)

FCC ID Label Location FCC ID: XEN-CKW

Internal Photos OPEN VIEW OF EUT INTERNAL VIEW OF EUT-1 INTERNAL VIEW OF EUT-2 INTERNAL VIEW OF EUT-3 INTERNAL VIEW OF EUT-4 INTERNAL VIEW OF EUT-5 INTERNAL VIEW OF EUT-6 INTERNAL VIEW OF EUT-7 INTERNAL VIEW OF EUT-8 INTERNAL VIEW OF EUT-9 INTERNAL VIEW OF EUT-10 INTERNAL VIEW OF EUT-11 INTERNAL VIEW OF EUT-12 VIEW OF BATTERY Antenna

Page 1 of 46 FCC Test Report Report No.: AGC07846201201FE03 FCC ID : XEN-CKW APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : RF Keyboard BRAND NAME : Heng Yu MODEL NAME : CKW APPLICANT : Heng Yu Electronic Manufacturing Company Ltd DATE OF ISSUE : Dec. 11, 2020 STANDARD(S) TEST PROCEDURE(S) : FCC Part 15 Rules REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.:AGC07846201201FE03 Page 2 of 46 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Dec. 11, 2020 Valid Initial Release Report No.:AGC07846201201FE03 Page 3 of 46 TABLE OF CONTENTS 1. VERIFICATION OF CONFORMITY ............................................................................................................... 5 2. GENERAL INFORMATION ............................................................................................................................ 6 2.1. PRODUCT DESCRIPTION ..................................................................................................................... 6 2.2. TABLE OF CARRIER FREQUENCY ....................................................................................................... 7 2.3. ANTENNA REQUIREMENT .................................................................................................................... 7 4. DESCRIPTION OF TEST MODES ................................................................................................................. 9 5. SYSTEM TEST CONFIGURATION ............................................................................................................. 10 5.1. CONFIGURATION OF EUT SYSTEM ................................................................................................... 10 5.2 EQUIPMENT USED IN TESTED SYSTEM ............................................................................................. 10 5.3. SUMMARY OF TEST RESULTS ............................................................................................................ 10 6. TEST FACILITY ........................................................................................................................................... 11 7. RADIATED EMISSION ................................................................................................................................. 12 7.1TEST LIMIT ............................................................................................................................................. 12 7.2. MEASUREMENT PROCEDURE ........................................................................................................... 13 7.3. TEST SETUP ......................................................................................................................................... 15 7.4. TEST RESULT ....................................................................................................................................... 16 8. BAND EDGE EMISSION ............................................................................................................................. 22 8.1. MEASUREMENT PROCEDURE ........................................................................................................... 22 8.2 TEST SETUP .......................................................................................................................................... 22 8.3 RADIATED TEST RESULT ..................................................................................................................... 22 9. 20DB BANDWIDTH ..................................................................................................................................... 27 9.1. MEASUREMENT PROCEDURE ........................................................................................................... 27 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................... 27 9.3. MEASUREMENT RESULTS .................................................................................................................. 28 10. FCC LINE CONDUCTED EMISSION TEST .............................................................................................. 30 10.1. LIMITS OF LINE CONDUCTED EMISSION TEST .............................................................................. 30 10.2. BLOCK DIAGRAM OF LINE CONDUCTED EMISSION TEST ............................................................ 30 10.3. PRELIMINARY PROCEDURE OF LINE CONDUCTED EMISSION TEST .......................................... 31 12.4. FINAL PROCEDURE OF LINE CONDUCTED EMISSION TEST ........................................................ 31 12.5. TEST RESULT OF LINE CONDUCTED EMISSION TEST .................................................................. 32 Report No.:AGC07846201201FE03 Page 4 of 46 APPENDIX A: PHOTOGRAPHS OF TEST SETUP ........................................................................................ 34 APPENDIX B: PHOTOGRAPHS OF THE EUT ............................................................................................... 36 Report No.:AGC07846201201FE03 Page 5 of 46 1. VERIFICATION OF CONFORMITY Applicant Heng Yu Electronic Manufacturing Company Ltd Address Room 1503-5, Nan Fung Commercial Centre, 19 Lam Lo Hong Kong China Manufacturer Zhuhai Heng Yu New Technology Company Limited Address No. 10, Yingyue Road, Yunong Village North, Sanzao Town, Zhuhai, Guangdong, P.R. China Factory Zhuhai Heng Yu New Technology Company Limited Address No. 10, Yingyue Road, Yunong Village North, Sanzao Town, Zhuhai, Guangdong, P.R. China Product Designation RF Keyboard Brand Name Heng Yu Test Model CKW Date of test Dec. 08, 2020 to Dec. 11, 2020 Deviation No any deviation from the test method Condition of Test Sample Normal Test Result Pass Report Template AGCRT-US-BR/RF We hereby certify that: The above equipment was tested by Attestation of Global Compliance (Shenzhen) Co., Ltd.…

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Report No.:AGC07846201201FE03 Page 40 of 46 OPEN VIEW OF EUT INTERNAL VIEW OF EUT-1 Report No.:AGC07846201201FE03 Page 41 of 46 INTERNAL VIEW OF EUT-2 INTERNAL VIEW OF EUT-3 Report No.:AGC07846201201FE03 Page 42 of 46 INTERNAL VIEW OF EUT-4 INTERNAL VIEW OF EUT-5 Report No.:AGC07846201201FE03 Page 43 of 46 INTERNAL VIEW OF EUT-6 INTERNAL VIEW OF EUT-7 Report No.:AGC07846201201FE03 Page 44 of 46 INTERNAL VIEW OF EUT-8 INTERNAL VIEW OF EUT-9 Report No.:AGC07846201201FE03 Page 45 of 46 INTERNAL VIEW OF EUT-10 INTERNAL VIEW OF EUT-11 Report No.:AGC07846201201FE03 Page 46 of 46 INTERNAL VIEW OF EUT-12 VIEW OF BATTERY ----END OF REPORT---- Antenna Conditions of Issuance of Test Reports 1. All samples and goods are accepted by the Attestation of Global Compliance (Shenzhen) Co., Ltd (the “Company”) solely for testing and reporting in accordance with the following terms and conditions. The company provides its services on the basis that such terms and conditions constitute express agreement between the company and any person, firm or company requesting its services (the “Clients”). 2. Any report issued by Company as a result of this application for testing services (the “Report”) shall be issued in confidence to the Clients and the Report will be strictly treated as such by the Company. It may not be reproduced either in its entirety or in part and it may not be used for advertising or other unauthorized purposes without the written consent of the Company. The Clients to whom the Report is issued may, however, show or send it, or a certified copy thereof prepared by the Company to its customer, supplier or other persons directly concerned. The Company will not, without the consent of the Clients, enter into any discussion or correspondence with any third party concerning the contents of the Report, unless required by the relevant governmental authorities, laws or court orders. 3.The Company shall not be called or be liable to be called to give evidence or testimony on the Report in a court of law without its prior written consent, unless required by the relevant governmental authorities, laws or court orders. 4. The non-CMA report issued by AGC is only permitted to be used by the client as internal reference use and shall not be used for public demonstration purpose. 5. In the event of the improper use of the report as determined by the Company, the Company reserves the right to withdraw it, and to adopt any other additional remedies which may be appropriate. 6. Samples submitted for testing are accepted on the understanding that the Report issued cannot form the basis of, or be the instrument for, any legal action against the Company. 7. The Company will not be liable for or accept responsibility for any loss or damage however arising from the use of information contained in any of its Reports or in any communication whatsoever about its said tests or investigations. 8.Clients wishing to use the Report in court proceedings or arbitration shall inform the Company to that effect prior to submitting the sample for testing. 9. The Company is not responsible for recalling the electronic version of the original report when any revision is made to them. The Client assumes the responsibility to providing the revised version to any interested party who uses them. 10. Subject to the variable length of retention time for test data and report stored hereinto as otherwise specifically required by individual accreditation authorities, the Company will only keep the supporting test data and information of the test report for a period of six years. The data and information will be disposed of after the aforementioned retention period has elapsed. Under no circumstances shall we provide any data and information which has been disposed of after retention period. Under no circumstances shall we be liable for damage of any kind, including (but not limited to) compensatory damages, lost profits, lost data, or any form of special, incidental, indirect, consequential or punitive damages of any kind, whether based on breach of contract of warranty, tort (including negligence), product liability or otherwise, even if we are informed in advance of the possibility of such damages.

Test Setup Photos FCC RADIATED EMISSION TEST SETUP BELOW 1GHZ FCC RADIATED EMISSION TEST SETUP ABOVE 1 CONDUCTED EMISSION TEST SETUP