FCC ID: 2AVQ5BT-ACTB-L Simulator for adult resuscitation training and evaluation

USERS GUIDE ALS Cardiac Training Model BT-ACTB-L Index 1. Cautions 2. Product Composition 2-1 Components 2-2 How to store the product 2-3 Assemble/Disassemble the legs 2-4 Connect manikin 2-5 How to insert and replace battery 3. Function 3-1 Function description 3-2 Function description - Detailed 4. Checking O/S Specification 4-1 O/S specification 5. Checking H/W Speficication 5-1 H/W specification 6. Install Application 6-1 Developer settings 6-2 Install app package file 7. Start Application 7-1 Select a product 7-2 Application settings 7-3 Conncet Facilitator and Monitor 7-4 Connect Facilitator and Manikin 1 2 3 4 5 6 7 8 9 10 11 12~13 14 15 16~17 18~19 8. Facilitator Feature 8-1 Manual mode 8-2 Top menu 8-3 Bottom menu 8-4 Left menu 8-5 Right menu 8-6 Patient monitor settings 8-7 Patient monitor (Graph monitor) 8-8 Patient monitor (Numeric monitor) 8-9 Patient status viewer 8-10 Change the patient status 8-11 Scenario mode 8-12 Library 8-13 Result viewer 9. Monitor Feature 9-1 Patient monitor 9-2 Top menu 9-3 Bottom menu 9-4 Patient monitor settings 9-5 Patient monitor (Graph monitor) 9-6 Patient monitor (Numeric monitor) 9-7 Patient records 9-8 NIBP 9-9 Medications 9-10 Defibrillator 9-11 Pacer 9-12 Oxygen therapy 9-13 Patient status records 20 21 22 23 24 25 26 27 28 29 30~37 38 39~42 43 44 45 46 47 48 49 50 51 52 53 54 55 1. Please read this carefully to ensure correct usage and user's safety through understanding of the product. BT Inc. is not responsible for any accidents occurred by not following the precuations. 1 Use only components provided or approved by BT Inc. 2 Do not use the product for any purposes other than described in the manual. 3 4 If you disassemble or modify the product without any permission by BT inc, the warranty will be void. Also, making imitated or altered products for commercial purposes are prohibited by law. If the product is overheating or emits a burning odor during usage, turn off the power switch, unplug the power adaptor and call the customer service center. 5 Please do not install any other S/W on the dedicated laptop. It may occur errors during the training. 6 Keep the product away from water and moisture area. 7 Do not use the product near strong magnetic fields or high voltage power lines. 8 9 Do not use the product and unplug the power adapter during lightning strorms. It can cause malfunction of the product and increase the risk of an electric shock. The product may malfunction under the extreme weather conditions.

(Operation temperature : 0~40 (32F~104), Storage temperature : -10~50 (14F~122F) 10 Do not keep the product near hot or cold environments as possible. Deterioration of product or internal damage may occur from extreme weather conditions. 11 Never clean the product with chemicals such as solvent, benzene or thinner as these may cause fire ignition or software malfunction. If you did, please wipe off it gently with a soft cloth immediately. 12 BT Inc. can change or adjust the product specification without any notice in order to improve the product. 1 2. Product Composition 2-1. Components Option 2-1. All-in-one PC for Monitor Storage case Full body manikin

+ Power adaptor Laptop for Facilitator Wifi router Defibrillation electrode cover for pads Defibrillation electrode cover for leadwires IV pad Bottle&tube for IV Syringe for cleaning Simulated blood Lubricant 2 2-2. How to store the product USERS GUIDE Make sure to wear a neck protector on the manikin during storage or transportation. 3 2-3. Assemble/Disassemble the legs Assemble Disassemble Disassembly is the reverse order of assembly. 4 2-4. Connect manikin Option DC Power connector

(17V) Power switch Power LED Download 5 2-5. How to insert and replace battery 1. Open the battery cover. 2. Connect the connectors and insert the battery into the manikin. 3. Close the battery cover. The battery is located on the right thigh. 6 3. Functions 3-1. Functions description Vocal sounds Head tilt/Chin lift Jaw thrust maneuver Chest compression Pupillary reflex Intubation Ventilation RA LA IV RL LL Gastric inflation Defibrillation ECG Pulse IO 7 3-2. Function description - Detailed Eyes Breathing 1 2 3 4 11 22 3 4 5 6 7 1 2 3 4 5 Light reflex / Consensual light reflex Adjust pupil size

- 1~8 mm Adjust light reflex speed

- Prompt / Slow Eyelids : Open / Closed Airway management Head tilt / Chin lift Jaw thrust Bag-Valve-Mask ventilation Oral / Nasal intubation

- ETT / LMA / I-gel / Combi-tube

- Detect Normal / Right mainstem intubation Detect esophagus Intubation and gastric inflation Measure force on incisors Airway obstruction 1 2 3 11 2 Spontaneous breathing

- Unilateral and bilateral chest rise

- Normal breathing sound SPO2 waveform (Software) ETCO2 waveform (Software) CPR Chest compression

- Compression depth

- Hands placement

(Correct/Upper/Lower/Left/Right)

- Compression rate

- Incomplete recoil

- Hands-off time Artificial respiration

- Ventilation volume

- Inspiratory time

- Ventilation per minute Circulation 3-4 Lead ECG Defibrillation and cardioversion

- Defibrillation waveform

- CPR waveform Pulse

- Pulse sites

: Left / Right carotid artery

: Left / Right femoral artery

- Pulse intensity

: Strong / Moderate / Weak ABP waveform (Software) PAP waveform (Software) Vascular access 1 2 IV (Right arm) Medication (Software) Speech 1 Vocal sounds

- 10 cases 8 4. Checking O/S Specification 4-1. O/S specification Minimum System requirements : Windows 10, Version 1809 or later 1 Search winver at the search box next to windows start menu icon. 2 Window version can be checked at the pop-up screen. 9 5. Checking H/W Speficication 5-1. H/W specification Resolution : 1920 X 1080 Text Size : 100%

1 Search Display settings at the search box next to windows start menu icon. 2 Set the Change the size of text and Resolution as below. 10 6. Install Application 6-1. Developer settings 1 Search Developer settings at the search box next to windows start menu icon. 2 Activate Developer mode at the screen. 11 7. 6-2. Install app package file 1 Select the app package file and right-click to launch PowerShell. 2 Install the app by following instructions.

- It may take some time depending on the PC's specification. 12 3 When the installation is completed, the app will be on the windows start menu. 4 The app can be moved to the desktop screen by dragging the mouse. 13 7. Start Application 7-1. Select a product 1 1 Select the product. 2 The selected software is started. 2 14 7-2. Application settings 1 Start the app and select Preferences menu at the left side. 2 Select the file system from the App permissions at the right side of the screen.

< Home screen >

3 Activate the file system at the app permissions screen. 4 The apps will be automatically shut down when the setting is completed. 15 8. 7-3. Conncet Facilitator and Monitor 1 Connect Wi-Fi

- Connect Facilitator and Monitor to the offered Wi-Fi router. ACTB-L_0003_5G 2 Facilitator Settings

- Click the Start button at the top menu. Facilitator 16 3 Monitor Settings

- Click the Wi-Fi button at the top menu. Monitor 4 When the two apps are connected, you can see the message as shown below. 17 8. 7-4. Connect Facilitator and Manikin 1 2 Turn on the manikin. Click the Bluetooth button at the top menu. 3 Find the manikin's serial number from Bluetooth list and connect it with the manikin. ACTB_0001 ACTB-L_0003 18 4 The Bluetooth connection status can be checked in the upper-right corner. ACTB_0001 ACTB-L_0003 Connected If the manikin is not paired to the laptop, the pairing operation is completed automatically. 19 8. Facilitator Feature 8-1. Manual mode 1 Select Manual mode from the home screen. 2 Layout of manual mode 1 3 5 6 4 2 1 4 Top menu Right menu 2 5 Bottom menu Patient monitor 3 6 Left menu Patient status viewer 20 8-2. Top menu 1 2 3 4 5 6 7 8 9 1 Home : Go to the home screen. 2 Patient monitor settings : Change settings of the layout of patient monitor and the audio. 3 Wi-Fi settings : Connect with Monitor. 4 Start training : Start and pause the training. 5 End training : End the training. 6 Save results : Save the training result. 7 Bluetooth settings : Connect Facilitator to Manikin. 8 Training time : Display the training time. 9 Bluetooth connection status : Displays the manikin connection status. 21 8-3. Bottom menu 1 2 3 1 Event Logs

- Record changes to parameters, medications, treatments, checklists, and simulators.

- You can select and view the items you want by using the filter. 2 Pop-up message : You can show or hide the pop-up message. 3 Full-screen mode : You can switch to full screen mode. 22 8-4. Left menu 1 2 3 4 5 6 1 CPR : Show the CPR feedback in real-time with graph and chart. 2 Guidelines : You can set CPR guidelines. 3 Checklists : You can create the checklist for the training. 4 Patient Records

- Set or check the patient profile.

- Send the patient history and diagnostic result.

- Set or check the initial patient status. 5 Airway management : You can choose the intubation device or set the force on incisors. 6 Maintenance : You can check the simulator's pneumatic operation status or calibrate the sensor values. 23 8-5. Right menu 1 2 3 4 5 6 7 8 9 1 Library : You can set and save patient parameters at once. 2 Cardiac : You can set cardiac parameters such as cardiac rhythm, heart rate, cardiac output. 3 Respiratory : You can set respiratory parameters such as chest rising, airway obstruction, respiratory rate. 4 Neuro : You can set nervous parameters such as ICP, body temperature. 5 Pulse : You can adjust pulse status and the intensity. 6 Eyes : You can set the pupil status. 7 Speech : You can set the speech and the breathing sound. 8 Medications : You can make medications needed for the training. 9 Treatments : You can train defibrillation, pacing, oxygen therapy. 24 8-6. Patient monitor settings 1 2 3 ACTB-L_0003 Connected 4 5 6 1 2 3 4 5 6 Patient monitor settings

- You can select a saved patient monitor or create a new one. Mute

- Turn the sound ON/OFF. Sound settings

- Alarm for heart rate, patient monitor and teeth can be ON/OFF. Patient monitor layout settings

- You can set the layout of the graph monitor and numeric monitor. Audio settings

- You can set the heart rate alarm, patient monitor alarm, and NIBP sound. Waveform settings

- Set the fluctuation for patient parameters. 25 8-7. Patient monitor (Graph monitor) 1 ACTB-L_0003 Connected 2 1 Graph monitor

- Display ECG, ABP, PAP, ETCO2 waveform.

- You can change the ECG waveform. 2 Graph monitor settings

- You can add or delete waveforms to the graph monitor.

- You can change the color of the waveform.

- You can display or block the signal of the waveform.

- You can adjust the graph scale.

- You can set the alarm. 26 8-8. Patient monitor (Numeric monitor) ACTB-L_0003 Connected2 1 1 Numeric monitor

- Display numeric values such as HR, CO, ABP. 2 Numeric monitor settings

- You can add or delete patient parameters in the numeric monitor.

- You can change the color of the patient parameters.

- You can show or hide patient parameters.

- You can set the alarm. 27 8-9. Patient status viewer 1 1 Display or change the current patient status.

- Display the patient profile.

- Display the hands placement during chest compression.

- Display the pulse intensity and the position of palpation.

- Display the airway angle.

- Display the jaw thrust maneuver.

- Display the force on incisor.

- Display the position of intubation.

- Display the stomach inflation.

- Display the chest rising and the airway obstruction. 28 8-10. Change the patient status 1 2 ACTB-L_0003 Connected 1 2 Select patient parameter menu

- Select the patient parameter menu that you want to change. Set the parameter

- Change the parameter and transient time. 29 ACTB-L_0003Connected 8-11. Scenario mode 1 2 1 2 Start scenario mode

- Select the scenario mode from the home screen. Create a scenario

- Click the Add scenario button and enter a scenario name. 30 3 4 3 Confirm scenario creation

- You can check the scenario created date and name.

- You can check the selected initial patient status.

- You can change the scenario name.

- You can delete the scenario.

- You can copy the scenario.

- You can export or import scenarios.

- Select the layout for the patient monitor. 4 Edit the scenario

- Click the Edit button and edit the scenario. 31 5 6 5 Set the patient profile

- Set the patient's name, gender, age, height and weight.

- A brief record of the patient's condition is possible. 6 Add patient file

- File can be saved as image, audio, video, PDF, RTF, text format.

- When adding the file, you can add the brief description and set the display expiration time. 32 7 7 Set the initial patient status

- You can set or save the initial patient status. 33 8 9 8 Add patient status

- Click the Add button to create a patient status needed for the training.

- You can get patient status from the patient status library.

- Export the created patient status to "Library". 9 Set the patient status

- Click the Edit button to change the patient status. 34 10 11 10 Create transition

- You can create transition conditions for changing patient status.

- There are timer, vital signs, treatments and medications for the transition. 11 Check the transition

- Check the transition condition and the next patient status. 35 12 13 1 12 2 13 Save the scenario

- Click the Save button to save the scenario. Start scenario

- Select the scenario that you want to run from the scenario list. 36 14 ACTB-L_0003 Connected 1 Run scenario 14

- You can start or stop the scenario from the scenario menu.

- You can check the set patient status. 37 8-12. Library 1 2 3 1 2 3 Select the library menu

- Select Library from the home screen. Creat a library

- Click the Add library button and enter a library name. Edit the library

- You can change or save the patient status by clicking the Edit button.

- You can search for saved patient status.

- You can change the saved patient status name.

- You can delete saved patient status.

- You can copy saved patient status.

- You can export or import saved patient status. 38 8-13. View results 1 2 1 Select result viewer

- Select result viewer from the home screen. 2 View saved results

- Select the desired result from the result list.

- You can search saved results.

- You can change the saved result name.

- You can delete saved results.

- You can export or import saved results. 39 3 4 5 2 3 Review the event logs

- Review the data such as changed parameters during the training.

- You can view event logs by grouping them. 4 Export the checklist to Excel

- The saved checklist will be exported to Excel format. 5 Export the history to Excel

- The history log will be exported to Excel format.

- You can edit the history log or save it as another name in Excel. 40 6 7 6 View CPR Graph

- Chest compression and ventilation data can be reviewed.

- You can check the CPR data at the desired time using the graph search function. 7 CPR graph options

- You can show or hide chest compressions and ventilation data on the graph. 41 8 9 10 8 9 View CPR chart

- You can see the CPR results as a chart. Export to Excel file

- You can export CPR data in Excel file format. 10 Export to image file

- You can export or print CPR results in image file format. 42 9. Monitor Feature 9-1. Patient monitor 1 3 2 1 Top menu 2 Bottom menu 3 Patient monitor 43 9-2. Top menu 1 2 3 4 5 6 7 1 Patient monitor settings : Change settings of the layout of patient monitor, the audio and NIBP. 2 Mute : Turn the sound ON/OFF. 3 Wi-Fi settings : Connect with Facilitator. 4 Start training : Displays the start and stop status of the training. 5 End training : Displays the status of the end of training. 6 Training time : Display the training time. 7 7 Wi-Fi connection status : Display the connection status with the Facilitator. 44 9-3. Bottom menu 1 2 3 4 5 6 7 1 Settings : You can check the preferences and S/W information. 2 Patient records : You can check the patient profile, patient history and diagnostic result. 3 Patient status records : You can record or print the current patient status. 4 NIBP : You can start measuring NIBP. 5 Medications : You can choose and administer the medications needed for the training. 6 Treatments : You can train defibrillation, pacing, oxygen therapy. 7 Full-screen mode : You can switch to full screen mode. 45 9-4. Patient monitor settings 1 2 3 4 5 1 2 3 4 5 Select the patient monitor

- Select or create a saved patient monitor. Synchronize

- Select the items which will be synchronized with Facilitator application. Patient monitor layout settings

-You can set the layout of the graph monitor and numeric monitor. Audio settings

- You can set the heart rate alarm, patient monitor alarm, and NIBP sound. NIBP settings

- You can set the NIBP auto cycling. 46 9-5. Patient monitor (Graph monitor) 1 2 1 Graph monitor

- Display ECG, ABP, PAP, ETCO2 waveform. 2 Graph monitor settings

- You can add or delete waveforms to the graph monitor.

- You can change the color of the waveform.

- Yon can display or block the signal of the waveform.

- You can adjust the graph scale.

- You can set the alarm. 47 9-6. Patient monitor (Numeric monitor) 2 1 1 Numeric monitor

- Display numeric values such as HR, CO, ABP. 2 Numeric monitor settings

- You can add or delete patient parameters in the numeric monitor.

- You can change the color of the patient parameters.

- You can show or hide patient parameters.

- You can set the alarm. 48 9-7. Patient records 1 2 3 1 Patient profile

- You can check the current patient profile. 2 Patient files

- Patient files sent from Facilitator are saved.

- Click the Open file button to view the patient file. 49 9-8. NIBP 1 1 1 1 Measure NIBP

- Click the mouse to start the NIBP measurement.

- NIBP is automatically measured when the NIBP auto cycling is set. 2 50 9-9. Medications 1 1 2 2 3 1 2 3 Bring medications

- Click the Import medication button to import medication stored in the Facilitator. Select medication

- You can choose the medication you need for your training from the medication list. Medication administration

- You can choose the type of medication and set the dosage and medication method. 51 9-10. Defibrillator 2 1 1 1 1 2 Defibrillator

- You can train synchronous and asynchronous defibrillation.

- You can select the type and energy of the defibrillation waveform. Defibrillation waveform

- Defibrillation waveforms are displayed on the ECG graph during defibrillation. 52 2 1 9-11. Pacer 1 1 2 Pacer

- You can set pacing current and rate.

- You can set the patient threshold current. Capture beats

- When pacing current is applied, capture beats are displayed on ECG graph. 53 9-12. Oxygen therapy 1 1 1 2 1 2 Select oxygen therapy

- You can choose the oxygen therapy that such as fraction of inspired oxygen and nasal cannula. Set the oxygen therapy

- You can set appropriate FiO2 and flow rate for the patient treatment. 54 9-13. Patient status records 1 1 3 2 1 3 4 1 2 3 4 Patient status records

- Click the Capture button to record the current patient status. Auto record

- Automatically recorded when patient status changes. Set filters

- Use the filter to add or delete the currently recorded patient status parameters. Printing the patient status records

- You can print the patient status record by clicking the Print button. 55 ALS Simulator BT-ACTB-L A-313, Samsong Techno-valley, 140, Tongil-ro, Deogyang-gu, Goyang-si, Gyeonggi-do, 10594, Republic of Korea T : +82-2-2038-2903 F : +82-2-2038-2904 www.btinc.co.kr / bt@btinc.co.kr

FCC ID: 2AVQ5BT-ACTB-L SAMPLE LABEL & LOCATION BT Inc. Model : BT-ACTB-L FCC ID : 2AVQ5BT-ACTB-L

(Contains FCC ID: 2AVQ5BT-ACTB-L) Made in Korea Copyright 2021, LTA Co., Ltd.

BT Inc. A-313 Samsong Techno-valley, 140, Tongil-ro, Deogyang-gu , Goyang-si, Gyeonggi-do, 10594, South Korea March 23, 2021 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 LETTER OF AUTHORIZATION To whom it may concern:

We, the undersigned, hereby authorize LTA Co., Ltd., to act on our behalf in all manners relating to application for equipment authorization for FCC ID: 2AVQ5BT-ACTB-L including signing of all documents relating to these matters. Any and all acts carried out by LTA Co., Ltd., on our behalf shall have the same affect as acts of our own. This authorization is valid until further written notice from BT Inc. LTA Co.,LTD. (Contact Person) Contact name: Ja-Beom Koo Position: Manager Phone:(82)31-323-6008 E-mail: cnamaster@ltalab.com Sincerely, DAE YONG KIM / Director BT Inc.

BT Inc. A-313 Samsong Techno-valley, 140, Tongil-ro, Deogyang-

gu , Goyang-si, Gyeonggi-do, 10594, South Korea March 23, 2021 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Class II Permissive Change Cover Letter SUBJECT: Class II Permissive Change for FCC ID : 2AVQ5BT-ACTB-L The intension of this application is to enable the modular FCC ID: 2AVQ5BT-ACTB-L, granted on 04/08/2021 to be integrated in BlueTooth Module, Model : BT-ACTB-L The module installed into host platform mentioned above is electronically and mechanically identical to the original certified module. The Original FCC testing on module under FCC ID:2AVQ5BT-ACTB-L was connected to the module in an open environment. The current host platform under application uses an antenna of the same type but of lower gain and is installed inside the host platform enclosure. The physical restraints introduced by the host platform should have resulted in equal or lower level of radiated emission. Therefore, additional Radiated emission testing is not necessary. Software security remains unchanged from the original application. Except for the change above, the design, hardware and implementation are exactly same with original. If you have any questions regarding this application, please feel free to contact me. DAE YONG KIM / Director BT Inc.

BT Inc. A-313 Samsong Techno-valley, 140, Tongil-ro, Deogyang-

gu , Goyang-si, Gyeonggi-do, 10594, South Korea March 23, 2021 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 In re : BT Inc. FCC ID : 2AVQ5BT-ACTB-L Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the Commissions Rules (CFR 47), BT Inc. hereby requests confidentiality and treatment of certain information accompanying this application. The materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. We are also hereby request Short-Term Confidentiality for 180 days after the grant as outlined in Public Notice DA 04-1705. This provision will give BT Inc. commporary confidentiality of commercially sensitive information prior to product release. The requested Confidential and Temporary Confidential exhibits are listed as follows:

CONFIDENTIAL File Name CONF APPENDIX 2AVQ5BT-ACTB-L SCH DIA.pdf CONF APPENDIX 2AVQ5BT-ACTB-L PL.pdf CONF APPENDIX 2AVQ5BT-ACTB-L BLK DIA.pdf Exhibit Type Schematics Parts list Block diagram Operational description CONF APPENDIX 2AVQ5BT-ACTB-L OpDes.pdf PCB Layout Ant spec External Photos Internal Photos Test-Setup Photos Users Manual CONF APPENDIX 2AVQ5BT-ACTB-L PCB Layout.pdf CONF APPENDIX 2AVQ5BT-ACTB-L Ant Spec.pdf SHORT-TERM CONF 2AVQ5BT-ACTB-L EXT Photo.pdf SHORT-TERM CONF 2AVQ5BT-ACTB-L INT Photo.pdf SHORT-TERM CONF 2AVQ5BT-ACTB-L Test Photo.pdf SHORT-TERM CONF 2AVQ5BT-ACTB-L Manual.pdf SHORT-TERM CONFIDENTIAL The Applicant understands that pursuant to Rule 0.457, disclosure of this application and all accompanying documentations, where applicable, will not be made public before the date of the Grant for this application. Sincerely, DAE YONG KIM / Director BT Inc.

BT Inc. A-313 Samsong Techno-valley, 140, Tongil-ro, Deogyang-

gu , Goyang-si, Gyeonggi-do, 10594, South Korea Cover letter FCC ID : 2AVQ5BT-ACTB-L 1. This product is uses approved module. 2. The antenna has not changed in using the module. 3. Although everything is identical to existing modules. March 23, 2021 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Gentlemen:

Sincerely, DAE YONG KIM / Director BT Inc.

BT Inc. A-313 Samsong Techno-valley, 140, Tongil-ro, Deogyang-gu , Goyang-si, Gyeonggi-do, 10594, South Korea March 26, 2021 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD21046 Authorization Letter from Original Applicant To whom it may concern:

The letter grants authorization for representative of BT Inc. to apply the FCC for a change in identification. This authorization applies to Sena Technologies,Inc. FCC ID : S7A-IW05, granted on 01/13/2017 Information of the Original FCC ID FCC ID : S7A-IW05 Information of the New FCC ID FCC ID : 2AVQ5BT-ACTB-L The equipment is electrically identical. The only change being the label on the device. The original test results, technical information and relevant documents continue to be representative of and applicable to the changed equipment. Should there be any, please feel free to contact us. Sena Technologies,Inc Contact name: Seunhyun Kim Position: Research Engineer BT Inc. Contact name: DAE YONG KIM Position: Director Sincerely, Sincerely,

BT Inc. A-313 Samsong Techno-valley, 140, Tongil-ro, Deogyang-

gu , Goyang-si, Gyeonggi-do, 10594, South Korea March 26, 2021 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Change of ID Request Letterr FCC ID : 2AVQ5BT-ACTB-L To Whom It May Concern:

This change of identification request applies for a new FCC ID: 2AVQ5BT-ACTB-L as established for a currently approved device. Per 2.933(b) 1. The orginal identification is FCC ID : S7A-IW05 2. The original identification grant date is 01/13/2017 3. The equipment is electrically identical with no change in design, circuitry and construction 4. The Original test results are applicable and representative 5. External photos, label and location are included in this application. If you have any questions, please feel free to contact us at the address shown above. Sincerely, DAE YONG KIM / Director BT Inc.