2BEGI-CC100Chessnut Companion

Getting Started 2 Buttons and Controls 1 Games & Features 3 Welcome to the world of chess with Chessnut Companion! This smart chess hub is the indispensable "best partner" for your Chessnut electronic chessboard. It features an innovative auto-response system that simulates a real opponent by automatically tapping the clock, offering a phone-free, highly focused, and immersive tournament atmosphere. Long press: Power the device on or off Short press: Sleep/Wake the screen Power Button Press to adjust the sound level Volume Buttons (+/-) Press to adjust the screen brightness Brightness Buttons (+/-) Manual triggers for the chess clock during gameplay Clock Buttons (Left/Right) Long press the Power Button. Wait approximately 30 seconds for the system to load the main interface. Power On Long press the Wi-Fi icon Select your network and enter the password to connect Bot Match Challenge built-in engines (Maia, Stockfish, Lc0) offline. Customize difficulty (ELO 600-3190) and time controls Online Match Play on Chess.com or Lichess with automatic board sync Clock Match Face-to-face games with digital arbiter Career Mode Personalized journey starting at ELO 500, powered by Stockfish 16 1 2 3 4 Game Modes Analysis Mode Set up any position and get instant engine evaluation ChessMind™ Create personalized engines by analyzing any player's games Game Records Review, analyze, export as PGN, or share games Analysis & Training Swipe down from the top of the screen to open the Status Bar Connect Wi-Fi Ensure your Chessnut chessboard is in Bluetooth Pairing Mode (blue LED flashing) Tap the Bluetooth icon on the left sidebar, then select "Connect" The status will display "Connected" once pairing is successful Sign in to your Chessnut account within the app Login & Pair Board 1 4 23 We have made some tutorial videos to show you the different uses of the Chessnut Champion. And we will continue to make more for you. You can find them on https://www.chessnutech.com/pages/tutorial and our Youtube channel: https://www.youtube.com/c/Chessnutech Please contact us by sending an email to: [email protected] if youhave any problems with your use. Usually we will reply to your email within 24 hours.Please check if it's in your spam box if you don't receive a reply. Our Facebook page: https://www.facebook.com/chessnut.technology Facebook group: https://www.facebook.com/groups/chessnutbackers, where many users share their experience on it. Happy chess playing! Contact us 5 Support & Resources 4 Chessnut Companion Quick Start Guide FCC Information and Copyright 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. 15.19 Labelling requirements. 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. changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment .This equipment should be installed and operated with minimum distance 20cm between the radiator& your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

Rev 1/26/2023 Shenzhen WISO Technology Co.,Ltd Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2026-06-13 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID:2BEGI-CC100 Shenzhen WISO Technology Co.,Ltd 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. Shenzhen WISO Technology Co.,Ltd certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Device is inherently compliant based on hardware limitations or software controls. or A Software Bill of Materials (SBOM) is provided to the TCB for review, and The end-user or third parties cannot install additional software on this device. Sincerely, (Applicant signature) (Li Liang) Rev 1/26/2023 Shenzhen WISO Technology Co.,Ltd Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2026-06-13 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2BEGI-CC100 Shenzhen WISO Technology Co.,Ltd certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, (Applicant signature) (Li Liang)

Effective Date: April 2, 2020 QSF 7.6.4-8 – Agent Authorization Letter Template Page 1 of 1 Revision Date: Revision: 0 Shenzhen WISO Technology Co.,Ltd Date：2026-06-06 Product Model Number: CC100, CC101,CC102,CC103,CC104 FCC ID:2BEGI-CC100 To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following:  Testing  Approval applications and procedures We declare that QAI Laboratories Ltd. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out byQAI Laboratories Ltd. on our behalf shall have the same effect as acts of our own. By: Li Liang Contact Listed on FCC Wesbite Title: Manager Email: [email protected] On behalf of: Shenzhen WISO Technology Co.,Ltd

Shenzhen WISO Technology Co.,Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: June 13, 2026 Subject; Request for Confidentiality FCC ID:2BEGI-CC100 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 FCC Software Security Requirements for UNII devices 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, Signature: Name: Li Liang Title: Manager

Shenzhen WISO Technology Co.,Ltd Product Similarity Declaration Product name: Chessnut Companion Model name: CC100, CC101,CC102,CC103,CC104 FCC ID: 2BEGI-CC100 We (Shenzhen WISO Technology Co.,Ltd) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.,), same mechanical structure and design (including product enclosure, materials, etc.,), the only difference is the model name. Sincerely yours, Applicant Signature Printed Name: Li Liang Title:Manager Address: Rm 815, Bld 10, SZ Bay Sci and Tech Ecological Park, No. 10, Gaoxin S. 9th Rd, Nanshan, Shenzhen, China Tel.: 18924630589 Email: [email protected]

Page 1 of 4 Shenzhen NTT Testing Technology Co.,Ltd. 1B, Building 2, Factory Building & 103, Building 3, Factory Building, Dayang Industrial Park, No.4, Industrial Avenue, Tangwei Community, Fuhai Sub-district, Bao 'an District, Shenzhen City, Guangdong, China FCC ID:2BEGI-CC100 External Photos Page 2 of 4 Shenzhen NTT Testing Technology Co.,Ltd. 1B, Building 2, Factory Building & 103, Building 3, Factory Building, Dayang Industrial Park, No.4, Industrial Avenue, Tangwei Community, Fuhai Sub-district, Bao 'an District, Shenzhen City, Guangdong, China Label&location Page 3 of 4 Shenzhen NTT Testing Technology Co.,Ltd. 1B, Building 2, Factory Building & 103, Building 3, Factory Building, Dayang Industrial Park, No.4, Industrial Avenue, Tangwei Community, Fuhai Sub-district, Bao 'an District, Shenzhen City, Guangdong, China Page 4 of 4 Shenzhen NTT Testing Technology Co.,Ltd. 1B, Building 2, Factory Building & 103, Building 3, Factory Building, Dayang Industrial Park, No.4, Industrial Avenue, Tangwei Community, Fuhai Sub-district, Bao 'an District, Shenzhen City, Guangdong, China

FCC ID LABELING AND LOCATION FCC ID Label SIZE：6*3.3cm FCC ID Label Location 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)

Page 1 of 6 Shenzhen NTT Testing Technology Co.,Ltd. 1B, Building 2, Factory Building & 103, Building 3, Factory Building, Dayang Industrial Park, No.4, Industrial Avenue, Tangwei Community, Fuhai Sub-district, Bao 'an District, Shenzhen City, Guangdong, China FCC ID:2BEGI-CC100 Internal Photos Page 2 of 6 Shenzhen NTT Testing Technology Co.,Ltd. 1B, Building 2, Factory Building & 103, Building 3, Factory Building, Dayang Industrial Park, No.4, Industrial Avenue, Tangwei Community, Fuhai Sub-district, Bao 'an District, Shenzhen City, Guangdong, China Page 3 of 6 Shenzhen NTT Testing Technology Co.,Ltd. 1B, Building 2, Factory Building & 103, Building 3, Factory Building, Dayang Industrial Park, No.4, Industrial Avenue, Tangwei Community, Fuhai Sub-district, Bao 'an District, Shenzhen City, Guangdong, China Page 4 of 6 Shenzhen NTT Testing Technology Co.,Ltd. 1B, Building 2, Factory Building & 103, Building 3, Factory Building, Dayang Industrial Park, No.4, Industrial Avenue, Tangwei Community, Fuhai Sub-district, Bao 'an District, Shenzhen City, Guangdong, China Page 5 of 6 Shenzhen NTT Testing Technology Co.,Ltd. 1B, Building 2, Factory Building & 103, Building 3, Factory Building, Dayang Industrial Park, No.4, Industrial Avenue, Tangwei Community, Fuhai Sub-district, Bao 'an District, Shenzhen City, Guangdong, China Page 6 of 6 Shenzhen NTT Testing Technology Co.,Ltd. 1B, Building 2, Factory Building & 103, Building 3, Factory Building, Dayang Industrial Park, No.4, Industrial Avenue, Tangwei Community, Fuhai Sub-district, Bao 'an District, Shenzhen City, Guangdong, China BT&WIFI ANT

FCC ID:2BEGI-CC100 RF Exposure Evaluation According to KDB 447498 D01 General RF Exposure Guidance v06 and part 2.1091，Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. Limits The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f 2 ) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f 2 ) 30 30–300 27.5 0.073 0.2 30 300–1500 f/1500 30 1500–100,000 1.0 30 f = frequency in MHz Friis transmission formula: Pd = (Pout*G)/(4*pi*r 2 ) Where Pd = power density in mW/cm 2 , Pout = output power to antenna in mW; G = gain of antenna in linear scale, Pi = 3.1416; R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm 2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Test Result of RF Exposure Evaluation 2.4GHz WIFI： Chann el Freq. (MHz) modulati on conducte d power Tune-u p power Max Ante nna Evaluation result at 20cm Power density Limits (dBm) (dBm) tune-up power Gain Power density(mW/cm 2 ) (mW/c m 2 ) (dBm ) (mW) Num eric 2412 802.11b 15.65 15±1 16 39.81 1.530.0121 1 2437 15.92 15±1 16 39.81 1.530.0121 1 2462 14.98 15±1 16 39.81 1.530.0121 1 2412 802.11g 13.85 14±1 15 31.62 1.530.0096 1 2437 14.82 14±1 15 31.62 1.530.0096 1 2462 13.61 14±1 15 31.62 1.530.0096 1 2412 802.11n H20 12.61 13±1 14 25.12 1.530.0076 1 2437 13.25 13±1 14 25.12 1.530.0076 1 2462 12.54 13±1 14 25.12 1.530.0076 1 2422 802.11n H40 12.18 12±1 13 19.95 1.530.0061 1 2437 12.81 12±1 13 19.95 1.530.0061 1 2452 11.65 12±1 13 19.95 1.530.0061 1 BLE： Chann el Freq. (MHz) modulati on conducte d power Tune-u p power Max Ante nna Evaluation result at 20cm Power density Limits (dBm) (dBm) tune-up power Gain Power density(mW/cm 2 ) (mW/c m 2 ) (dBm ) (mW) Num eric 2402 GFSK 11.220 11±1 12 19.95 1.590.0050 1 2440 11.297 11±1 12 19.95 1.590.0050 1 2480 11.413 11±1 12 19.95 1.590.0050 1 Frequenc y (MHz) Modulatio n mode conducte d power Tune-u p power Max Anten na Evaluation result at 20cm Power density Limits (dBm) (dBm) tune-up power Gain Power density(mW/cm 2 ) (mW/c m 2 ) (dBm ) (mW) Numer ic Ant A Ant A Ant AAnt A Ant AAnt A 5180 11a 14.97 14±1 15 31.62 1.73 0.0109 1 5200 11a 14.73 14±1 15 31.62 1.73 0.0109 1 5240 11a 14.45 14±1 15 31.62 1.73 0.0109 1 5180 11n (HT20) 14.85 14±1 15 31.62 1.73 0.0109 1 5200 11n (HT20) 14.65 14±1 15 31.62 1.73 0.0109 1 5240 11n (HT20) 14.43 14±1 15 31.62 1.73 0.0109 1 5190 11n (HT40) 14.55 14±1 15 31.62 1.73 0.0109 1 5230 11n (HT40) 14.32 14±1 15 31.62 1.73 0.0109 1 5180 11ac (HT20) 14.13 14±1 15 31.62 1.73 0.0109 1 5200 11ac (HT20) 14.33 14±1 15 31.62 1.73 0.0109 1 5240 11ac (HT20) 13.65 14±1 15 31.62 1.73 0.0109 1 5190 11ac (HT40) 14.15 14±1 15 31.62 1.73 0.0109 1 5230 11ac (HT40) 13.57 13±1 14 25.12 1.73 0.0086 1 5210 11ac (HT80) 13.58 13±1 14 25.12 1.73 0.0086 1 Remark： 1. WiFi2.4g, WiFi5g donot transmit at the same time BT and wifi can transmit at the same time 2. In the case of simultaneous launches for wifi and BLE: The Max Calc. Thresholds : BLE: 0.0050, WiFi:0.0121 BLE and Wifi : 0.0050+0.0121 =0.0171≤ 1 So a SAR test is not required

  NO. NumberPage Contents of PageCode 1   Spec Cover  11 2  Drawing  12 5 &'ᦞ  Gain Data Table  15 3  !"#$Test Reports 13 4 S%!"S Parameter 14 6 &'!"  Gain Test  16 7 8 9 10 --- 11--- 12 --- Tel:15818375487 Dongguan Chuangjie Electronics Co., Ltd. Manufacturer: Address: Room 413, No. 61 Ningxin Middle Road, Humen Town, Dongguan City DESCRIPTION SIGN DATE APPROVER D C B YD 2016-05-05 SCALE: 1/1 UNITS: mmREVISION: A APPROVED BY Tolerance TITLE:4G 3G GSM ANTENNA PART NO.:GF4015-IPEX 1-60 DWG NAME:GF4015-IPEX 1-60.DWG CHECKED BY DESIDNED BY Tel :86-0769-33691210 Fax:86-0769-82381572 • • •••• • •••• •• ••••• • • •••••••• • X.XX •••••••••• Note: 1.Take" 点 "is the important dimension. 2.Tolerance:Unmarked tolerance refer to the standard tolerance please. 3.Pull Strength of the connector must be >/=1.0kg. 4.Note Connector orientation. FPC 40*15mm SHOWA-O.D. 1.13mm Black Mini Connector Part Number Name GF4015 FPC R-CB-113B Coaxial CableConnector CI-113 1 No. 2 3 1 1 Q'ty 1 Material leon 2016-05-05 jeff 2016-05-05 Test Reports Electrical Properties Frequency760 ~ 2700 MHz Impedance50 0hm RadiationOmni-directional PolarizationLinear Admitted Power1 W Connectoripex Physical Properties Antenna MaterialFPC Cable TypeO.D. 1.13mm // 120 mm Operating Temp. -10 ~ +60 ̊C Storage Temp. -10 ~ +70 ̊C Tel:15818375487 S%!" S Parameter Test Agilent E5071C Tel:15818375487 Freq Efficiency Gain Efficiency_Pcent 2400 -4.190.4938.07 2425 -3.971.240.13 2450 -3.741.8442.28 2475 -3.612.0243.58 2500 -3.621.9643.49 5150 -2.882.351.54 5250 -2.512.3856.15 5350-2.32.2858.9 5470 -2.442.0557.02 5600 -2.531.8655.9 5725 -2.532.0255.89 5785 -2.432.2157.1 5800 -2.472.1456.58 5850 -2.362.1658.09 &'!" Gain Test Antenna Radiation Pattern VS Gain 0 45 90 135 180 225 270 315 -5 -5 -15 -15 -25 -25 -35 -35 -45 Tel:15818375487

TEST REPORT FCC ID:2BEGI-CC100 Product : Chessnut Companion Model Name : CC100 Brand : Chessnut Report No. : SZNTT26017439E1-1 Prepared for Shenzhen WISO Technology Co.,Ltd Rm 815, Bld 10, SZ Bay Sci and Tech Ecological Park, No. 10, Gaoxin S. 9th Rd, Nanshan, Shenzhen, China Prepared by Shenzhen NTT Testing Technology Co., Ltd. 1B, Building 2, Factory Building & 103, Building 3, Factory Building, Dayang Industrial Park No.4, Industrial Avenue, Tangwei Community, Fuhai Sub- district,Bao 'an District, Shenzhen City, China TEL: 0755-27889935              !"      # $%& ! ' ()*+   " ,) -+ , )  - ' ! + ! .! !  /0)  , ) 1 2   +)    ) #) (   # 3 ' (""4!  ! ' () *+   " 56 ,) ("/ 7 -4+ ) 48 !! + ! ' /0)   (""4')   ! 49+ /!) - :  ; /!) #                 ((, ,)((, )((, )((, <              !     "# $%&  ' '  % ()* + )     ,  -  )     .  $  / .  $ )  # / .  $ ! -  0 0-  0   0/ "!!.      1   2    345!6    1    2       0 /            !    0    7   . 1   1    -  "!!.    / 0   - 0/ "!!.   /.   0    -        0/3!  48 6 9 )  - 1 3 - 6 (  :  - 38 6 0  ; Report No.: SZNTT26017439E1-1 SZNTT-TR830-0 Page 3 of 70 Hotline: 0755-27889935 http://www.ntt-testing.com Contents Page 1 TEST RESULT CERTIFICATION ........................................................................................................................ 2 2 TEST SUMMARY ................................................................................................................................................... 5 3 GENERAL INFORMATION .................................................................................................................................. 6 3.1 GENERAL DESCRIPTION OF E.U.T............................................................................ 6 3.2 CHANNEL LIST ........................................................................................................... 7 3.3 TEST SITE .................................................................................................................. 9 3.4 TEST SETUP CONFIGURATION ................................................................................ 10 3.5 TEST MODE ............................................................................................................. 10 4 EQUIPMENT DURING TEST ............................................................................................................................. 11 4.1 EQUIPMENTS LIST ................................................................................................... 11 4.2 MEASUREMENT UNCERTAINTY................................................................................ 13 4.3 DESCRIPTION OF SUPPORT UNITS .......................................................................... 13 5 CONDUCTED EMISSION ................................................................................................................................... 14 5.1 E.U.T. OPERATION ................................................................................................. 14 5.2 EUT SETUP ............................................................................................................. 14 5.3 TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ........................................ 15 5.4 MEASUREMENT PROCEDURE .................................................................................. 15 5.5 CONDUCTED EMISSION LIMIT .................................................................................. 15 5.6 MEASUREMENT DESCRIPTION ................................................................................ 16 5.7 CONDUCTED EMISSION TEST RESULT .................................................................... 16 6 RADIATED SPURIOUS EMISSIONS ............................................................................................................... 22 6.1 EUT OPERATION ..................................................................................................... 22 6.2 TEST SETUP ............................................................................................................ 23 6.3 SPECTRUM ANALYZER SETUP ................................................................................ 24 6.4 TEST PROCEDURE ................................................................................................... 25 6.5 SUMMARY OF TEST RESULTS ................................................................................. 26 7 DUTY CYCLE ....................................................................................................................................................... 39 7.1 LIMIT ........................................................................................................................ 39 7.2 TEST SETUP ............................................................................................................ 39 Report No.: SZNTT26017439E1-1 SZNTT-TR830-0 Page 4 of 70 Hotline: 0755-27889935 http://www.ntt-testing.com 7.3 TEST PROCEDURE ................................................................................................... 39 7.4 TEST RESULT .......................................................................................................... 40 8 CONDUCT BAND EDGE AND SPURIOUS EMISSIONS MEASUREMENT ............................................. 43 8.1 TEST SETUP .......................................…

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Page 1 of 2 Shenzhen NTT Testing Technology Co.,Ltd. 1B, Building 2, Factory Building & 103, Building 3, Factory Building, Dayang Industrial Park, No.4, Industrial Avenue, Tangwei Community, Fuhai Sub-district, Bao 'an District, Shenzhen City, Guangdong, China FCC ID: 2BEGI-CC100 Test Photo Page 2 of 2 Shenzhen NTT Testing Technology Co.,Ltd. 1B, Building 2, Factory Building & 103, Building 3, Factory Building, Dayang Industrial Park, No.4, Industrial Avenue, Tangwei Community, Fuhai Sub-district, Bao 'an District, Shenzhen City, Guangdong, China