S7A-SP123CAST

Cast Manual Charging Red LED: Charging Blue LED: Fully charged *** The Bluetooth / LE / Mesh function is not working while is charging.*** Power On/Off (+) Button + Center Button for 1 sec Volume Adjustment (+) Button - Increase the volume (-) Button - Decrease the volume Battery Check Phone, Music Pairing Initially Pairing the Cast The headset will automatically enter the phone pairing mode when you initially turn on the headset or in the following situation: • Rebooting after executing Factory Reset 1. Press and hold the Center Button and (+) Button for 1 second. 2. Search for Bluetooth devices on your mobile phone. Select the Cast in the list of the devices detected on the mobile phone. 3. Enter 0000 for the PIN. Some mobile phones may not ask for the PIN. Music Operation Play or pause music: Press the Center Button for 1 second. Track back: Press the (-) Button for 1 second. Track forward: Press the (+) Button for 1 second. Mobile Phone Call Making and Answering Answering a call: Tap the Center Button Ending a call: Press the Center Button for 2 seconds. Voice dial: Press the Center Button for 3 seconds. Speed dial: Press the (+) Button for 3 seconds. Rejecting a call: Press the Center Button for 2 seconds. Intercom Pairing 1. Press and hold the Center Button of two headsets for 5 seconds until red LEDs of both units start to flash rapidly. 2. Simply tap the Center Button of any one of the two headsets. Mesh Intercom On/Off Mesh Intercom On : Tap the M Button. Mesh Intercom Off : Tap the M Button. Radio On/Off Turn on the FM radio: Press the (-) Button for 1 second. Turn off the FM radio: Press the (-) Button for 1 second. Ambient On/Off Tap the Ambient Button PPT On/Off Tap the PPT Button Setting Configuration Menu: Press the Center Button for 10 seconds. Troubleshooting Factory Reset If you want to restore the headset to factory default settings, use the Factory Reset in the configuration menu. The headset automatically restores the default settings and turns off. Certification and Safety Approvals FCC Compliance Statement 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. 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 on and off, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antennae -Increase the separation between the equipment and the 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. FCC RF Exposure Statement This equipment complies with FCC/IC radiation exposure limits set forth for an uncontrolled environment. End users must follow the specific operating instructions for satisfying RF exposure compliance. When equipped, the distance between antenna and one’s head surface is 34.3 mm(worst distance). FCC Caution Any changes or modifications to the equipment not expressly approved by the party responsible for compliance could void user’s authority to operate the equipment. Industry Canada(IC) Statement This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1)this device may not cause interference, and (2)this device must accept any interference, including interference that may cause undesired operation of the device. Le present appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisee aux deux conditions suivantes : (1) l’appareil ne doit pas produire de brouillage, et (2) l’utilisateur de l’appareil doit accepter tout brouillage radioelectrique subi, meme si le brouillage est susceptible d’en compromettre le fonctionnement. IC RF Exposure Statement Cet équipement est conforme aux limites d'exposition aux radiations de la FCC/IC définies pour un environnement non contrôlé. Les utilisateurs finaux doivent suivre les instructions d'utilisation spécifiques pour satisfaire à la conformité d'exposition RF. Lorsque équipé, la distance entre l’antenne et la surface de la tête est de 34.3 mm(worst distance).

SENA TECHNOLOGIES.Inc 19, Heolleung-ro 569-gil, Gangnam-gu Seoul South Korea June 23 th , 2022 Applicant: SENA TECHNOLOGIES.Inc FCC ID: S7A-SP123 / IC: 8154A-SP123 To. Whom it may concern: We, Sena Technologies,Inc. declare that when equipped, the distance between antenna and one’s head surface is 34.3mm. Contact Name: Seunghyun Kim Title: Research Engineer

SENA TECHNOLOGIES.Inc 19, Heolleung-ro 569-gil, Gangnam-gu Seoul South Korea Date: 07/14/2022 Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Declaration letter for SDOC FCC ID: S7A-SP123 To whom it may concern : We declare that this device will be approved in accordance with SDOC procedure for Rule Part 15B. We certify that the product had performed test on EMC Labs Co., Ltd. laboratory and it was confirmed to comply with FCC Part 15B. Sincerely, Contact Name: Seunghyun Kim Title: Research Engineer

SENA TECHNOLOGIES.Inc 19, Heolleung-ro 569-gil, Gangnam-gu Seoul South Korea Date: 07/11/2022 Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Request of Confidentiality FCC ID: S7A-SP123 To Whom It may Concern: Pursuant to Sections 0.457 and 0.459 of the Commission`s Rules(CFR 47), and Section 552 (b) (4) of the Freedom of Information Act, SENA TECHNOLOGIES.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 SENA TECHNOLOGIES.Inc. temporary confidentiality of commercially sensitive information prior to product release. The requested permanent and Short-Term Confidential exhibits are listed as follows: PERMANENT & SHORT-TERM CONFIDENTIAL LIST Exhibit Description PERMANENT 1 Block Diagram 2 Schematics 3 Part Lists 4 Operation Description 5 NA SHORT-TERM 6 Internal Photos 7 External Photos 8 Test-Setup Photos 9 User Manual The Applicant understands that pursuant to Rule 0.457, disclosure of this application and all accompanying documentations, where applicable, will not be public before the date of the Grant for this application. Sincerely, Contact Name: Seunghyun Kim Title: Research Engineer

SENA TECHNOLOGIES.Inc 19, Heolleung-ro 569-gil, Gangnam-gu Seoul South Korea Date: 07/11/2022 Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Letter of Authorization We, the undersigned, hereby authorize Geunki Son of DT&C C o., Ltd. to act on our behalf in all manners relating to application for equipment authorization for FCC ID: S7A-SP123 including signing of all documents relating to these matters. Any and all acts carried out by Geunki Son of DT&C C o., Ltd. on our behalf shall have the same affect as acts of our own. This authorization is valid until further written notice from SENA TECHNOLOGIES.Inc. “I, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a).” Sincerely, Contact Name: Seunghyun Kim Title: Research Engineer

FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 1 FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 2 FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 3 FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 4 <Port 1 (PTT, AUX, USB)> FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 5 <Port 2 (MIC)>

SENA_SP123_Label & Location Label location –bottom of sample.

FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 6 FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 7 FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 8 <BT Antenna> FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 9 <MESH Antenna_MAIN> <MESH Antenna_SUB> FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 10 <Battery> <Battery>

FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 1 FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 2 FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 3 FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 4 FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. View 5

FCC ID: RF feature Mode (Worst case) Transmitting Frequency(MHz) Test separation distance (mm) ANT Gain (dBi) Max. power with tune-up tolerance (dBm) Note1 Max. power with tune-up tolerance (mW) Power thresholds SAR test exclusion thresholds Bluetooth 1Mbps 2 480.0 38.90 0.30 17.85 60.953 7 2.47 3.00 BLE 1Mbps 2 480.0 38.90 0.30 5.00 3.162 3 0.13 3.00 Mesh OQPSK(Ant1) 2 475.0 36.50 0.76 18.00 63.095 7 2.72 3.00 Mesh OQPSK(Ant2) 2 475.0 34.30 0.53 18.00 63.095 7 2.89 3.00 Note1.Note2. Conclusion : = [ ( 60.9537mW / 38.9mm ) ] X [ √2.48GHz ] = 2.47 Max Time Avg. Power = Max Tune Power(Burst power) + Duty factorFor bluetooth, duty factor was applied to max tune-up Burst Pow er. Note. The calculation result was rounded to two decimal place f or comparison. S7A-SP123 Please refet to the operation description for Max Tune-up power . Standalone SAR test exclusion considerations SAR evaluation for general popul ation exposure conditions by me asurement or numerical simulation is not required Duty factor = 10 x log (TX on time / Tx on+off time) = 10 x log (2.88ms/3.75ms) = -1.15 dB KDB 447498 D01 clause 4.3.1 Step 1) SAR test exclusion thresho lds for 100MHz to 6GHz at test separation distances ≤ 50 mm [ ( max. power of channel, inclu ding tune-up tolerance, mW ) / ( min. test separation distance, mm ) ] · [ √f(GHz) ] ≤ 3.0 for 1g SAR and ≤ 7.5 for 10g extremity SAR Sample Calculation

FCC ID: S7A-SP123 Report No.: DRTFCC2207-0125 IC: 8154A-SP123 This test report is prohibited to copy or reissue in whole or in part without the approval of DT&C Co., Ltd. TRF-RF-237(07)210316 Pages: 2 / 80 Test Report Version Test Report No. Date Description Revised by Reviewed by DRTFCC2207-0125 Jul. 14, 2022 Initial issue ChangWon Lee JaeJin Lee FCC ID: S7A-SP123 Report No.: DRTFCC2207-0125 IC: 8154A-SP123 This test report is prohibited to copy or reissue in whole or in part without the approval of DT&C Co., Ltd. TRF-RF-237(07)210316 Pages: 3 / 80 Table of Contents 1. General Information ............................................................................................................... 4 1.1. Description of EUT ......................................................................................................................... 4 1.2. Declaration by the applicant / manufacturer ................................................................................ 4 1.3. Testing Laboratory ......................................................................................................................... 5 1.4. Testing Environment ...................................................................................................................... 5 1.5. Measurement Uncertainty .............................................................................................................. 5 1.6. Information about the FHSS characteristics ................................................................................ 6 1.7. Conclusion of worst-case and operation mode ........................................................................... 7 1.8. Test Equipment List ........................................................................................................................ 8 2. Antenna Requirement ............................................................................................................ 9 3. Summary of Test Results .................................................................................................... 10 4. Maximum Peak Conducted Output Power ......................................................................... 11 4.1. Test Setup ..................................................................................................................................... 11 4.2. Limit ............................................................................................................................................... 11 4.3. Test Procedure .............................................................................................................................. 11 4.4. Test Results .................................................................................................................................. 12 5. 20 dB BW & Occupied BW .................................................................................................. 18 5.1. Test Setup ..................................................................................................................................... 18 5.2. Limit ............................................................................................................................................... 18 5.3. Test Procedure .............................................................................................................................. 18 5.4. Test Results .................................................................................................................................. 18 6. Carrier Frequency Separation ............................................................................................ 24 6.1. Test Setup ..................................................................................................................................... 24 6.2. Limit ............................................................................................................................................... 24 6.3. Test Procedure .............................................................................................................................. 24 6.4. Test Results .................................................................................................................................. 24 7. Number of Hopping Channels ............................................................................................ 29 7.1. Test Setup ..................................................................................................................................... 29 7.2. Limit ............................................................................................................................................... 29 7.3. Test Procedure .............................................................................................................................. 29 7.4. Test Results .................................................................................................................................. 29 8. Time of Occupancy .............................................................................................................. 35 8.1. Test Setup ..................................................................................................................................... 35 8.2. Limit ............................................................................................................................................... 35 8.3. Test Procedure .............................................................................................................................. 35 8.4. Test Results .................................................................................................................................. 35 9. Unwanted Emissions ........................................................................................................... 40 9.1. Test Setup .......................................................…

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SPECIFICATION Chip Antenna Model No. : SENA_003 WRITTEN CHECKED APPROVED Seunghyun Kim Seunghyun Kim July 22, 2009 Notes The contents of this data sheet are subject to change without notice. Please confirm the specifications and delivery conditions when placing your order. - 2 - CHIP ANTENNA 1. SPECIFICATIONS 1.1. Electrical Specifications ITEM SPEC. Unit Frequency 2400-2485 MHz Bandwidth @ VSWR 2.5:1 100 MHz Gain Max. 0.3dBi Polarization Linear Azimuth Beam Pattern Omni-directional Impedance 50 Ω ※ These values are measured on the matched reference test board. 1.2. Mechanical Specifications Electrode Silver Dimensions (L x W x H) 9.0 x 3.0 x 1.2 mm Operating Temperature -35 ~ +85 °C 1.3. Appearance and Dimensions L 9.0 W 3.0 H 1.2 - 3 - CHIP ANTENNA 2. MEASUREMENT 2.1. Electrical Characteristic A. S 11 (Return Loss) B. S 11 (Smith chart) - 4 - CHIP ANTENNA 3. Radiation Data Average Gain Max Gain Frequency Efficiency Ver Hor Total Ver Hor Total Max PositionDirectivity 2400 MHz 41.8 % -7.0 dBi -6.6 dBi-3.8 dBi0.3 dBi-0.8 dBi0.1 dBi Theta165/Pie304.32 dB 2442 MHz 39.7 % -6.9 dBi -7.2 dBi-4.0 dBi-0.2 dBi-1.6 dBi0.3 dBi Theta120/Pie454.53 dB 2485 MHz 36.3 % -7.1 dBi -7.7 dBi-4.4 dBi-2.2 dBi-1.6 dBi0.2 dBi Theta120/Pie305.05 dB - 5 - CHIP ANTENNA 4. RELIABILITY TEST No Item Test condition Test Requirements 1 Adhesion strength . Applied force on SMD chip till detached point from PCB 1. No mechanical damage by forces applied on the right 2. Strength (F) > 5 kgf 2 Thermal Shock (Temperature Cycle) 1. 1 cycle / step 1 : -40 ± 3°C, 30 min step 2 : +85 ± 3°C, 30 min 2. Number of cycle : 10 3. Measure after left for 48 hrs min. at room temperature 1. No visual damage 2. VSWR satisfy 3 High Temperature Resistance 1. Temperature: +85 ± 5°C 2. Time : 96 hrs 3. Measure VSWR C after left for 24 hrs min. at room temperature 1. No visual damage 2. VSWR satisfy 4 Low Temperature Resistance 1. Temperature: -40 ± 5°C 2. Time : 96 hrs 3. Measure VSWR C after left for 48 hrs min. at room temperature 1. No visual damage 2. VSWR satisfy 5 Humidity (Steady Condition) 1. Humidity : 85 % RH 1. Temperature: +85 ± 3°C 2. Time : 96 hrs 3. Measure VSWR C after left for 48 hrs min. at room temperature 1. No visual damage 2. VSWR satisfy 6 ESD 1. ESD Level : 8KV 2. Mode : Contact discharge 3. Number of cycle : 100 ※Used Ref test PCB. 1. No visual damage 2. VSWR satisfy F PCB - 6 - CHIP ANTENNA 5. SOLDERING RECOMMENDATIOS 5.1. Reflow Soldering Profile A. Non Pb free 25 150 230 200 60 sec 20 ~ 40 sec Temperate (°C) Time (sec) Cooling zone (slowly) 100 100 ~ 120sec B. Pb free 240°C±5°C(Peak temp.) 230°C

FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. Test Setup photographs EUT Position: X-axis EUT Position: Y-axis EUT Position: Z-axis FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. Test Setup Photo of Radiated Measurement (0.009 ~ 30MHz) FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. Test Setup Photo of Radiated Measurement (Below 1GHz) FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. Test Setup Photo of Radiated Measurement (Above 1GHz) FCC ID: S7A-SP123 IC: 8154A-SP123 Copyright Ⓒ 2022, DT&C Co., Ltd. Test Setup Photo of AC Line Conducted Measurement