FCC ID: 2BDUJ-UBCKT350 instrument

UBCKT350 Intelligent Instrument Instructions 1 23 catalogue Preface................................................................................................... 4 User precautions...................................................................................... 4 Product Introduction.............................................................................................................. 5 1. Name.................................................................................................5 2. Product Model................................................................................... 5 3. Product Appearance........................................................................... 5 4. Product Specifications........................................................................ 5 5. Main interface display........................................................................ 7 6. Button Definition................................................................................8 7. Routine Operations.............................................................................8 Information Viewing and Settings.....................................................11 1.Instrument Setting.............................................................................. 11 2.Information Viewing.......................................................................... 14 3.Language Selection............................................................................15 4.UI selection.......................................................................................16 5.Password Setting................................................................................16 6.Bluetooth connection......................................................................... 19 7.Restore factory settings .................................................................... 19 Vehicle Control............................................................................... 20 1.Automatic adjustment of screen brightness......................................... 20 2.Induction headlights.......................................................................... 20 3.One click start/stop........................................................................... 20 4.Approaching to unlock/leaving the lock.............................................20 OTA Upgrade..................................................................................20 2 23 Navigation function .........................................................................21 Frequently Asked Questions and Answers ....................................... 21 Version Change .............................................................................. 22 3 23 preface Dear user, in order to better operate your electric vehicle, please carefully read the instruction manual of the e-bike instrument before use. We will tell you in the simplest language about every step of using the instrument, including hardware installation, setup, and normal use of the instrument. At the same time, we will help you solve any confusion and obstacles that may arise. User precautions Pay attention to safety during use and do not plug or unplug the instrument when powered on. Try to avoid collisions on the instrument panel. The outer shell of the instrument adopts waterproof technology, please do not disassemble it randomly to avoid affecting the waterproof performance of the instrument. Regarding the background parameter settings of the instrument, please do not change them arbitrarily, otherwise normal riding cannot be guaranteed. When the instrument cannot be used normally, it should be sent for repair as soon as possible. 4 23 Product Introduction 1. Description instrument 2. Model No. UBCKT350 3. Appearance 4. Product specifications 5 23 General Parameter Length*Width*Height Length*Width*Height Dimension Screen Size 3.5''

Screen Size Connector Holder Diameter Holder Diameter Type Color TFT RGB Resolution 320 * 480 Type Length M8 waterproof joint male 5 core 20 cm Operating Voltage 12V - 60V Operating Temperature

-20 - +70 General Feature Ingress Protection Rating IP67 Communication Protocol UART/CAN Other Feature Theme Bluetooth 3 BLE 5.2 6 23 5. Main interface display 1. Bluetooth function: Bluetooth on/off status display, display identification after successfully connecting to instrument Bluetooth;

2. Cruise control: Display the vehicle in cruise control mode;

3. Warning reminder: display warning information;

4. Mode display: displays the current vehicle mode;

5. Outline light: displays the on/off status of the outline light, and displays the identification when the system's outline light is on;

6. Headlight display: Display the on/off status of the headlights, and display the identification when the system headlights are on;

7. Battery display: displays real-time battery level;

8. Turn icon display: displays the current direction of vehicle rotation;

9. Real time speed display: Display real-time speed values;

7 23 10. Accumulated mileage ODO: displays the accumulated mileage;

11. Logo display: displays the vehicle's logo;

12. Boost mode display: displays the vehicle's activation of boost mode;

13. Single Mileage TRIP: displays the mileage of the current ride;

14. Power display: displays the current vehicle power;

15. Time display: displays the current time;

6. Button Definition The E-bike type instrument has three buttons. Including "On/Off key", "Plus key+", and "Minus key -". Key setting As shown in the following figure On/Off key Minus key

Plus key+

7. Routine Operations The E-bike instrument panel provides three themed UI styles and five languages for users to set up. This specification sheet is based on Using Theme1 and English versions as examples for explanation.

"Press and hold button for>2.5S" is replaced by "long press", and "press and hold button for<0.5S" is replaced by "click". On/Off Animation 8 23 After long pressing the "On/Off" button, the instrument panel will power on and play the startup animation; In the power on state, long press the "On/Off" button to make the system power off and the instrument play a shutdown animation. In the shutdown state, the leakage current of the instrument is less than 1uA. The startup interface is shown in the following figure 9 23 Gear selection After turning on, click the "+" or "-" button to switch the power assist gear, change the output power of the motor, and adjust the instrument panel. The default gear is 0-5, with no power output in 0 gear. 1st gear is the lowest power and 5th gear is the highest power. When the instrument is turned on, it defaults to 1st gear. The assist gear selection interface is shown in the following figure. Headlight switch Turn on the lights: Press and hold the "+" button when the lights are turned off, the screen's headlights will light up, and the controller will be notified to turn on the lights. Turn off the lights: Press and hold the "+" button while the lights are on, the screen headlights will dim, and the controller will be notified to turn off the lights. After turning on and off the light, the light sensing function failed, and it returned to normal after restarting. The display interface of the headlight switch is shown in the following figure. 10 23 Boost cruise mode When the vehicle is stationary, click the "-" button to shift to 0, then long press the "-" button again to enter the boost cruise mode. The boost cruise interface is shown in the following figure. In the boost cruise mode, the boost sign is dynamically displayed. When the vehicle speed is less than 6km/h, long press the "-" button to stop the boost status. The screen boost sign disappears and the static boost sign status is restored. The cruise assist function can only be used when the user is driving an electric vehicle, please do not use it while riding. 11 23 Information Viewing and Settings 1.Instrument settings Click the "" key to enter the settings information list, use the "+" or "-" keys to move the cursor up and down, select "Display Setting", "Information",

"Language", "Themes", "Password", "Bluetooth", "Reset Factory" and "Exit", and click "" to enter. The function selection interface is shown in the following figure Show. Please refer to Appendix 1 for system parameter settings, security settings, factory parameter settings, and advanced option passwords. Conversion of English and metric units Enter the "Display Setting" menu, select "Unit", click "" to enter the settings, use the "+" or "-" keys to move the cursor up and down, select "km/h; mph", click "" to save and exit to "

"Unit", exit to the main interface through "Back" ->"Exit". The unit conversion is shown in the following figure. 12 23 Automatic shutdown Enter the "Display Setting" menu, use the "+" or "-" keys to move the cursor up and down, and select "Auto"Off, click to enter the settings interface, move the cursor to select "OFF", "1min", "2min", "3min","4min", "5min",

"6min", "7min", "8min", "9min", "10min" ("OFF" indicates turning off the automatic shutdown function, "1min-10min" respectively represents the time for automatic shutdown.) The required automatic shutdown time will be saved by clicking "" to exit from the "Display Setting" menu, and exit by clicking

"Back" "Exit"Main interface. Attention: Any operation during the automatic shutdown time will be timed again, and the time for not operating will reach the set time It will only shut down after a certain amount of time. Single mileage reset Enter the "Display Setting" menu, use the "+" or "-" keys to move the cursor up and down, and select "Trip"Reset, click to enter the settings, then move the cursor to select "NO"/"YES" ("YES" indicatesClear to zero

("NO" means not reset), click "" to save and exit to "Trip Reset", click

"Back" Exit to the main interface. When the cumulative mileage reaches its maximum value, it will automatically reset to zero. The maximum mileage for a single trip is 13 23 655KM (different The maximum value of the protocol is different. When a single mileage is reset, both the single mileage and the average speed are reset at the same time Backlight brightness setting Enter the "Display Setting" menu, use the "+" or "-" keys to move the cursor up and down, select"Brightness", click "" to enter the settings,move the cursor to select "25%"/"50%" after entering the settings/"75%"/"100%", short press "" to save and exit to "Brightness", use "Back" "Exit" to exit Go to the main interface. The backlight settings are shown in the following figure. 14 23 2.Information viewing Wheel diameter information - enter the "Information" menu, use the "+" or "-" keys to move the cursor up and down, select "Wheel Size", click "" to enter the settings. The default wheel diameter is 26Inch, and the range can be set to 16Inch-29Inch. After setting up, exit to the main interface through "Back" ->"Exit". Speed limit information - enter the "Information" menu, the speed limit information is not adjustable. When the unit is km (metric system), the default speed limit is 32km/h; When the unit is in miles, the default speed limit is 20MPH. Through "Back"Exit to the main interface. As shown in the following figure. Instrument Information - Enter the "Information" menu, use the "+" or "-" keys to move the cursor up and down, select "Display Info", click "OK", and the instrument interface will display the instrument software and hardware version number (software and hardware version number The version number may change due to different batches of products. Exit to the main interface through "Back" ->"Exit". Cruise control - enter the "Information" menu, use the "+" or "-" keys to move the cursor up and down, select "Cruise control", click "OK", and exit to the main interface through "Back" ->"Exit". 15 23 3.Language selection The E-bike instrument panel offers 5 languages for users to choose from. Click the ""

key to enter the settings information list, use the "+" or "-" keys to move the cursor up and down, select "Language", click "" to enter the language selection interface, move the cursor to switch between "English", "Deutsch", "Fran ais", "Chinese", and "Espa ol", then short press "" to confirm. Exit to the main interface through "Back" ->"Exit". The language selection is shown in the following figure. 4.UI selection The E-bike instrument panel provides four different styles of UI interfaces for users to choose from. Click the "" key to enter the settings information list, use the "+" or "-" keys to move the cursor up and down, select "Themes", click "" to enter, use the "+" or "-" keys to switch between "ECO" - "TOUR" - "TURBO" - "SPORT", and then short press "" to confirm. Exit to the main interface through "Back" ->"Exit". The UI selection is shown in the following figure. 5.Password settings 16 23 Enable password function - click the "" key to enter the setting information list, use the "+" or "-" keys to move the cursor up and down, select the "Password" option, and click

"" OK "to enter the Password options interface. Select" Start Password "(Start Password status is off) with the cursor and click" "Confirm". The interface will prompt you to enter the password (the initial password defaults to 0000), At this point, use the "+" or "-" keys to switch between the numbers "0-9", click "" to confirm the number in the current cursor. After entering, the system will prompt that the password function is successfully enabled. After the password function is successfully set, the interface will automatically jump to the original setting interface, and exit to the main interface through "Back" ->"Exit". The operation steps are shown in the following figure. Turn off password function - click the "" key to enter the setting information list, use the "+" or "-" keys to move the cursor up and down, select the "Password" option, and click "" OK "to enter the Password options interface. Select" Start Password "(Start Password status is on) with the cursor and click" "confirm". The interface will prompt you to enter the password. At this time, use the "+" or "-" keys to switch the numbers "0

-9", Click "" to switch between digits and complete the input After completion, the system prompts to disable the password function. After successfully canceling the password, the interface will automatically jump to the original settings interface, and exit to the main interface through "Back" ->"Exit". The operation steps are shown in the following figure. 17 23 Setting and Changing Passwords - (The initial password defaults to 0000) Click the "" key to enter the settings information list, use the "+" or "-"

keys to move the cursor up and down, select After selecting the "Password" option, click "OK" to enter the Password options interface, and select "Reset" with the cursor After entering the "Password" and clicking "" to confirm, 1. The interface prompts "Please enter your old password". At this time, use the "+" or "-" keys to switch between the numbers "0-9", Click to switch between digits, 2. After entering, the interface prompts "Please enter your password". At this time, use the "+" or "-" keys to switch between numbers Words "0-9", click "" to switch between digits, 3. After entering, the interface prompts "Please confirm your password". At this time, use the "+" or "-" keys to switch between numbers Words "0-9", click "" to switch between digits, Note: After changing the initial password, if you want to enable the instrument password function, you need to enter a new password to enable it Start. Do not modify initial password unless necessary After the password is successfully modified, the interface will automatically jump to the original settings interface, and exit to the main page through "Back" ->"Exit"

Interface. The operation steps are shown in the following figure. 18 23 6.Bluetooth connectivity Click the "" key to enter the settings information list, use the "+" or "

-" keys to move the cursor up and down, select the "Bluetooth" option, and click "" OK "to enter the Bluetooth QR code interface. You can scan the QR code and bind the device through the mobile app. After binding the device, the device interface will automatically jump to the main interface, and the Bluetooth function indicator will light up. The operation steps are shown in the following figure. Attention: The Bluetooth connection distance between the instrument panel and the phone should be within 10 meters. 19 23 7.Restore factory settings Click the "" key to enter the settings information list, use the "+" or "

-" keys to move the cursor up and down, select the "Reset Factory"

option, and click "" OK "to restore the instrument panel to its factory settings. The operation steps are shown in the following figure:

8.Error code display When the electric vehicle electronic control system malfunctions, the instrument panel will display an error code. The definition of the error code in this instrument panel is shown in Appendix 2. 3 Vehicle control 1. Automatic adjustment of screen brightness The E-bike instrument automatically adjusts the screen brightness based on brightness;

2. Induction headlights The E-bike instrument panel automatically turns on and off the headlights based on the sensed light intensity;

3. One click start/stop Mobile phone control for vehicle start/stop;

20 23 4. Approaching to unlock/leaving the lock Approaching the vehicle, the vehicle automatically unlocks;

(In vehicle standby mode) Leaving the vehicle, the vehicle automatically locks (in standby mode) OTA upgrade Click the "" key to enter the settings information list, use the "+" or "

-" keys to move the cursor up and down, select the "OTA" option, and click "" OK "to enter the OTA upgrade interface. The operation steps are shown in the following figure. Upgrade in progress interface Upgrade completed interface 21 23 Navigation function After entering the destination in the search box, click to start cycling. At this time, the instrument panel will display the navigation turn icon type, the remaining distance of the current road section, and the name of the next road section. There are several ways to indicate:

Name Icon Name Icon Entering the tunnel Straight Travel Turn left and turn back Turn right and turn back Turn Left Turn Right Turn Sharp left Turn Slight Left Entering the roundabout Turn Sharp Right Turn Slight Right Navigation function Frequently Asked Questions and Answers Q: Why can't it be turned on?

Answer: Check if the battery is turned on or if the external lead is broken. Q: How should the instrument display fault codes be handled?

Answer: Go to the repair point for electric vehicles in a timely manner for repairs. 22 23 Version change The software version of this instrument manual may have slight differences from this manual, and the actual version used shall prevail. Serial Number setting Password illustrate 1 2 3 4 System Setting 0315 Security Setting Factory default 1234 Recover Default Advanced Options 0605 0126 System parameter setting password

(fixed) Security setting password

(modifiable) Restore factory parameter settings password (fixed) Advanced Options Password (Fixed) Appendix 1: Password Quick Reference Table Appendix 2: Error Code Definition Table 23 23 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 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. Warning: changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment The devices has been evaluated to meet general RF exposure requirement the device can be used in portable exposure condition without restriction

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C5266091_X24_Ed.2 CETHIK Wuxi Technology Co., Ltd Attestation Statements TO:

Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules for covered telecommunications equipment and video surveillance equipment produced by entities identified on the Commissions Covered List1, which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) that prohibit equipment authorization Applicant Company name: CETHIK Wuxi Technology Co., Ltd Grantee code: 2BDUJ FCC ID:

Contact Name: zuo lun Address: No. 32, Qingyan Road, Xinwu District, Wuxi City, Jiangsu Province Telephone No: 0510-81973005 Fax No:

Email: zuojinglun@hikwuxi.com 2BDUJ-UBCKT350 i. ii.

[CETHIK Wuxi Technology Co., Ltd] (the applicant) 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. The applicant must sign this certification.

[CETHIK Wuxi Technology Co., Ltd] (the applicant) certifies that, as of the date of the filing of the application, the applicant [is not] (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing covered equipment. The applicant must sign this certification.

[CETHIK Wuxi Technology Co., Ltd] (the applicant) 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 coveredequipment . Date: 2023/12/18 Applicants Name: zuo lun Title: Manager Signature 1 The Commissions Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commissions website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes covered equipment. https://www.fcc.gov/supplychain/coveredlist 1/1

CETHIK Wuxi Technology Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Subject: Request for Confidentiality FCC ID: 2BDUJ-UBCKT350 To Whom It May Concern, C5266091_X10_Ed.2 Date: 2023-12-18 Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules

(47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits ID Label/Location Attestation Statement External Photos Block Diagram Schematics Test Report Test Setup Photos Users Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) SDR Software / Security Info Long-Term Confidentiality No No No No No NOTE 1 NOTE 1 No No Short-Term Confidentiality NOTE 2 No No No No No No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of ______ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. 1/1 C5266091_X10_Ed.2 Sincerely, Signature:

Name: zuo lun Title: Manager 2023.12.18 1/1

C5266091_X8_Ed.1 Letter of Authorization CETHIK Wuxi Technology Co., Ltd Company: CETHIK Wuxi Technology Co., Ltd Address: No. 32, Qingyan Road, Xinwu District, Wuxi City, Jiangsu Province Product Name: instrument Model Number: UBCKT350 FCC Identifier: 2BDUJ-UBCKT350 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: zuo lun Date: 2023.12.18 Title: Manager Signature of applicant:

1/1

USA MEIHUA TRADING INCLETTER OF ATTESTATION TO:

Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process:

Company Name: USA MEIHUA TRADING INC FRN: 0033406166 Contact Name: Harley Quinn Address: 5379 Pine Valley Ct Boulder CO 80301 United States Telephone No: 1-312-363-9424 Email: meihua-trading-inc@foxmail.com Applicant:

Company name:CETHIK Wuxi Technology Co., Ltd Product Description:instrument Grantee code:2BDUJ FCC 1D:2BDUJ-UBCKT350 FRN:0034548685 Contact Name::

Email:zuojinglun@hikwuxi.com Address:No. 32, Qingyan Road, Xinwu District, Wuxi City, Jiangsu Province

[CETHIK Wuxi Technology Co., Ltd] certifies that, as of the date of this filing of the application with the TCB, [USA MEIHUA TRADING INC] is our designated US agent for service of process for the above referenced FCC ID. [CETHIK Wuxi Technology Co., Ltd] 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 equipment.

[USA MEIHUA TRADING INC] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause 2.911. Date: 12/14/2023 Applicants Name: US Agents Name: Harley Quinn Title:Manager 1/1 yuo lun