2AL6N-ST-BTIN003RSMART INSOLE

How to use 2 Download application You can charge the insoles without taking out them from the shoes. Our insoles are optimally designed for charging while insoles are inside of shoes. 3 Connection between insoles and application Through the QR link, you can download and use the various apps we provide. Take out the insoles of shoe and cut it to the same size. Please be careful not to cut over the bottom line that marked on the product. If sensor is damaged, it may not work. Fitting guide Please follow the below guide to use the insoles properly 1 Charge insoles 1) Connect the wireless charging pad to the electrical power adapter with the included electrical charging cable. 2) Power adapter is not included, and it is recommended to use the product rated voltage for 5V, 1.5~3A. 3) When you place the back-heel part of insoles on the charging pad, the side LED shows the charging status. 1) Place your charged insoles into shoes and turn on the Bluetooth. 2) When you run the downloaded application, you will see the connection guides provided. 3) Follow the guide until calibration process and it will complete the connection process. We recommend the calibration process at least once in a month for the accurate measurement. 4 Enjoy smart insoles 1) Now you can check the proper posture balance and get the recommended exercise from the application provided by SALTED. The battery of insoles can last 7 days for standby mode and 3 days for continuous use. (Usage periods can be varied depends on the condition of the product) 2) If smart insoles are unused for a long time, please charge before use. You can check the battery level on the applications. First time to use? Please charge at least 30 minutes before use. - LED slow flashing : Charging standby - LED fast flashing : Charging - LED is on : Fully charged - Transmission/reception frequency: Bluetooth(BLE): 2402MHz ~ 2480MHz Bluetooth(BLE) Class2 Max: 4dBm - Supply voltage: DC 3.7V(Battery) - Operating temperature: -10°C ~ +50°C - Wireless charging pad rating: 5V, 1.5A or more Insoles may have possibility of radio interference. Specifications Please note the technical information - Model name: ST-BTIN003L / ST-BTIN003R / ST-WPAD001 - Company name: SALTED Co., Ltd.(https://www.salted.ltd) - Name of apparatus: A wireless data-communication device which is used for system. - Manufacturing date: Marked separately - Manufacturer: SALTED Co., Ltd. - Manufacturing country: MADE IN KOREA - FCC Certified number 2AL6N-ST-BTIN003L / 2AL6N-ST-BTIN003R / 2AL6N-ST-WPAD001 - KC Certified number R-R-IOF-ST-BTIN003L / R-R-IOF-ST-BTIN003R / R-R-IOF-ST-WPAD001 Product certification Our product is certified in various regions 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 com- munications. 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. Modifications not expressly approved by the manufacturer could void the user's authority to operate the equipment under FCC rules. FCC compliance information Please note the precaution to prevent the damages Precautions - Please use the insoles after reading this manual. - Be careful of sizing of the insoles, otherwise measurement data can be inaccurate. - We recommend to wear the shoes sizes a bit bigger (<5mm) for a wear of comfort. - Bluetooth connectivity can be varied depending on the surrounding conditions. - Please be aware of metallic, magnetic materials (>20cm) near wireless charging pad. It could interrupt the charging or product may not work. - Please use proper power adapter or wall charger with provided charging cable. - Do not connect the charging cable directly to USB port on laptop or PC. It may damage or degrade the products. - If you need to restart or turn off the insoles for the occasional uses, please follow the below process. Please note that wireless charging pad is needed to turn the insoles on. Please be aware of below precautions - Please wear the insoles with proper using purpose, otherwise it may occur the risk of injury and product life can be shortened. - The product may be damaged if used in salty places such as at the beach. - If the product has been wet from snow, rain or sweat, and you have hand washed the product, turn the product over and dry it sufficiently in the shade. (at least 7 days recommended) - Be careful not to get water around the charging port as much as possible. - Store in a clean place out of direct sunlight and humidity. - Store in a place not exposed to corrosive gases. (chlorine, ammonia, sulfur dioxide, hydrogen sulfide, etc.). Turn off the insoles 1) Flip the insoles and press hard the heel part with using a thumb and index finger. 2) If you hold pressing for 10 seconds, there will be a vibration. 3) Insoles will be turned off when it is flipped again. 4) Pleas…

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Salted Co., Ltd. 6F, 603, Eonju-ro, Gangnam-gu, Seoul, Republic of Korea Tel: +82-10-9770-5363, Fax: +82-2-558-0815 Date: September 14, 2022 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AL6N-ST-BTIN003R Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: PERMANENT Exhibit Type File Name Part List Part List.pdf Schematics Diagram(s) Schematic.pdf Operation description Operation description.pdf Block diagram Block diagram.pdf And the above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, KyungHoon Kang / VP of Development Salted Co., Ltd.

Salted Co., Ltd. 6F, 603, Eonju-ro, Gangnam-gu, Seoul, Republic of Korea Tel: +82-10-9770-5363, Fax: +82-2-558-0815 Date: September 14, 2022 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 FCC ID : 2AL6N-ST-BTIN003R To whom it may concern: I, the undersigned, hereby authorize Young-Jin, Lee of KES Co., Ltd. and hereafter referred to as KES Co., Ltd., to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by Young-Jin, Lee of KES Co., Ltd. on our behalf shall have the same effect as acts of our own. 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). In authorizing KES Co., Ltd. as our agent, we still recognize that we are responsible to: a) comply with the relevant provisions of the certification program; b) make all necessary arrangements for the conduct of the evaluation, including provision for examining documentation and access to all areas, records (including internal audit reports) and personnel for the purposes of evaluation (e.g. testing, inspection, assessment, surveillance, reassessment) and resolution of complaints; c) make claims regarding certification only in respect of the scope for which certification has been granted; d) do not use our product certification in such a manner as to bring the Certification Division into disrepute and not make any statement regarding our product certification which the Certification Division may consider misleading or unauthorized; e) upon suspension or cancellation of certification, discontinue use of all advertising matter that contains any reference thereto and return any certification documents as required by the Certification Division; f) use certification only to indicate the products are certified as being in conformity with specified standards; g) endeavor to ensure that no certificate or report nor any part thereof is used in a misleading manner; Salted Co., Ltd. 6F, 603, Eonju-ro, Gangnam-gu, Seoul, Republic of Korea Tel: +82-10-9770-5363, Fax: +82-2-558-0815 h) ensure that any reference to our product certification in communication media such as documents, brochures or advertising, complies with the requirements of the Certification Division; i) keep a record of all complaints made known to the us relating to the product’s compliance with requirements of the relevant standard and to make these records available to the Certification Division when requested; j) take appropriate action with respect to such complaints and any deficiencies found in products or services that affect compliance with the requirements for certification; k) document the actions taken. This authorization is valid until further written notice from the applicant. Sincerely Yours, KyungHoon Kang / VP of Developmen Salted Co., Ltd. REMARK: 1. This authorization letter will be sent along with your application when filing with the Certification Division. 2. Please follow the format and type it on company letterhead and send original to us. 3. Authorized signature must be in agreement with grantee code contact in FCC database.

Model No.: ST-BTIN003R Page 1 of 2 External photo Model No.: ST-BTIN003R Page 2 of 2 External photo

Model No.: ST-BTIN003R Page 1 of 1 Label photo

Model No.: ST-BTIN003R Page 1 of 1 Internal photos PCB Antenna wireless charging Antenna (RX only)

Model No.: 2AL6N-ST-BTIN003L Page 1 of 1 RF exposure FCC ID : 2AL6N-ST-BTIN003R According to 447498 D01 General RF Exposure Guidance v06 The 1-g and 10-g SAR test exclusion thresholds for 100 ㎒ to 6 ㎓ at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ꞏ[√f(㎓)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, Where; f(㎓) is the RF channel transmit frequency in ㎓ Power and distance are rounded to the nearest ㎽ and mm before calculation The result is rounded to one decimal place for comparison Results Mode Frequency (㎓) Distance (mm) Max tune-up power (㏈m) Calculation value Exclusion Threshold (㏈m) (㎽) LE 2 402 5 -1.00 0.79 0.246 ≤3.0 2 442 -1.00 0.79 0.248 2 480 -1.00 0.79 0.250

RadiAnt 1 A4(210X297mm) SPECIFICATION Date :2022.06.30 Product Name BT ANTENNA Customer 솔티드 Model Name ST-BTIN003R ST-BTIN003L Customer Code Provider RadiAnt Part Code 9200000-00191 9200000-00192 Buyer Submitted Checked Approved RadiAnt Submitted Checked Checked Approved RadiAnt 2 A4(210X297mm) – Table of Contents – 1. Product History---------------------------------------------------------------------------------- 3 2. Electrical Feature -------------------------------------------------------------------------------- 4 2.1 Frequency Band 2.2 Impedance 2.3 Matching circuit 2.4 VSWR 2.5 Directivity 2.6 Maximum Power 3. Environment Test -------------------------------------------------------------------------------- 7 4. Electric Performance Data -------------------------------------------------------------------- 9 5. Drawing ------------------------------------------------------------------------------------------12 RadiAnt 3 A4(210X297mm) 1. Product History LIST NO Data Front After Change REV 1 2022.06.30 Approval 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 RadiAnt 4 A4(210X297mm) 2. Electrical Feature 2.1. Frequency Band BAND BT FREQUENCY 2400~ 2485MHz 2.2 Impedance 2.2.1 Input Impedance - R =50Ω 2.2.2 Measuring Method By using Network Analyzer, connect the antenna installed ST-BTIN003 SET to the reflection point of Analyzer and measure the impedance value within the designated frequency band. 2.3 Matching circuit Matching Circuit is composed in free space of 2.1 frequency band while satisfying customer’s requirements. <ST-BTIN003R> RadiAnt 5 A4(210X297mm) <ST-BTIN003L> 2.4 VSWR Impedance Matching optimization is performed under the below mentioned environment. 2.3.1 Free Space Environment <BT ant_ST-BTIN003R> BAND BT FREQ. 2400MHz 2425MHz 2450MHz 2485MHz VSWR 1.27 : 1 under 1.30 : 1 under 1.36 : 1 under 1.21 : 1 under <BT ant_ST-BTIN003L> BAND BT FREQ. 2400MHz 2425MHz 2450MHz 2485MHz VSWR 1.24 : 1 under 1.07 : 1 under 1.49 : 1 under 1.97 : 1 under RadiAnt 6 A4(210X297mm) 2.3.1 Measuring Method Connect (soldering) 50Ω semi-rigid coaxial cable to the 50Ω spot in ST-BTIN003 set. To minimize the loss of transmission, semi-rigid coaxial cable is used. Including PCB, the Set BT terminal shouldn’t be different from the one, which will be used for mass production. Specification should be the same for all frequency bands. Free Space means that Set BT terminal is put on the surface of no conducting plastic. 2.5 Directivity Omni-directional (SUM) <ST-BTIN003R> <ST-BTIN003L> 2.6 Maximum Power - P=2W Under RadiAnt 7 A4(210X297mm) 3. Environment Test 3.1 Operating Temperature Test 3.1.1 Test Condition Temperature = -30°C, +80°C Duration time = 1 hour 3.1.2 Requirements After the test, the antenna must not have an outer damage, and also it must pass requirement shown in 2.4. 3.1.3 Measuring Method Antenna is kept at -30°C for 1 hour and +80°C for 1 hour and than passed test of 2.4 3.2 Temperature Cycling Test 3.2.1 Test Condition - Low cycling Temperature TLC = -40°C - High cycling Temperature THC = +80°C - 1Cycle = 4 hours - Test number = 10Cycle 3.2.2 Requirements After the test, the antenna must not have an outer damage, and also it must pass requirement shown in 2.4. RadiAnt 8 A4(210X297mm) 3.2.3 Measuring Method Antenna is kept at low temperature -40°C for 2 hours and increase the temperature up to +80°C within 2 hour and kept for another 2 hours at the same temperature will be 1 cycle. As shown in Figure 3.2.1 repeat 10 cycle and kept for 2 hour in normal temperature. Figure 3.2.1 Temperature Cycling 3.3 Corrosion Resistance Test 3.3.1 Test Condition - NaCl = 90% - Water Temperature = 60°C - Duration Time = 96 hours 3.3.2 Requirements After the test, the antenna must not have an outer damage, and also it must pass requirement shown in 2.4. 3.3.3 Measuring Method Antenna is soaked in sodium chloride solution at temperature +60°C and 90%(NaCl) for 96 hours and dry out. RadiAnt 9 A4(210X297mm) 4. Electric Performance Data 4.1. Smith Chart & VSWR <ST-BTIN003R> <2.400~2.485GHz> <ST-BTIN003L> <2.400~2.485GHz> RadiAnt 10 A4(210X297mm) 4.2. GAIN DATA 4.2.1 ST-BTIN003R -3D Radiation Pattern -2D Radiation Pattern(Theta + Phi total Polarization Gain) RadiAnt 11 A4(210X297mm) 4.2.2 ST-BTIN003L -3D Radiation Pattern -2D Radiation Pattern(Theta + Phi total Polarization Gain) RadiAnt 12 A4(210X297mm) 5. Drawing <ST-BTIN003R> RadiAnt 13 A4(210X297mm) <ST-BTIN003L>

KES Co., Ltd. 3701, 40, Simin-daero 365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Korea Tel: +82-31-425-6200 / Fax: +82-31-424-0450 www.kes.co.kr Report No.: KES-RF1-22T0126 Page ( 1 ) of ( 33 ) This report shall not be reproduced except in full, without the written approval of KES Co., Ltd. The results shown in this test report refer only to the sample(s) tested unless otherwise stated. The authenticity of the test report, contact [email protected] KES-QP-7081-06 Rev. 7 KES A4 Te s t R e p o r t Part 15 Subpart C 15.247 Equipment under test SMART INSOLE Model name ST-BTIN003R FCC ID 2AL6N-ST-BTIN003R Applicant Salted Co., Ltd. Manufacturer Salted Co., Ltd. Date of test(s) 2022.08.05~2022.08.13 Date of issue 2022.09.23 Issued to Salted Co., Ltd. 6F, 603, Eonju-ro, Gangnam-gu, Seoul, Republic of Korea. Tel: +82-10-9770-5363 / Fax: +82-2-558-0815 Issued by KES Co., Ltd. 3701, 40, Simin-daero 365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Korea 473-21, Gayeo-ro, Yeoju-si, Gyeonggi-do, Korea Tel: +82-31-425-6200 / Fax: +82-31-424-0450 Test and report completed by : Report approval by : Dong-Uk, Kim Test engineer Young-Jin, Lee Technical manager KES Co., Ltd. 3701, 40, Simin-daero 365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Korea Tel: +82-31-425-6200 / Fax: +82-31-424-0450 www.kes.co.kr Report No.: KES-RF1-22T0126 Page ( 2 ) of ( 33 ) This report shall not be reproduced except in full, without the written approval of KES Co., Ltd. The results shown in this test report refer only to the sample(s) tested unless otherwise stated. The authenticity of the test report, contact [email protected] KES-QP-7081-06 Rev. 7 KES A4 Revision history Revision Date of issue Test report No. Description - 2022.09.23 KES-RF1-22T0126 Initial KES Co., Ltd. 3701, 40, Simin-daero 365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Korea Tel: +82-31-425-6200 / Fax: +82-31-424-0450 www.kes.co.kr Report No.: KES-RF1-22T0126 Page ( 3 ) of ( 33 ) This report shall not be reproduced except in full, without the written approval of KES Co., Ltd. The results shown in this test report refer only to the sample(s) tested unless otherwise stated. The authenticity of the test report, contact [email protected] KES-QP-7081-06 Rev. 7 KES A4 TABLE OF CONTENTS 1. General information ................................................................................................................................................... 4 1.1. EUT description ........................................................................................................................................ 4 1.2. Test configuration ...................................................................................................................................... 4 1.3. Derivative Model Information ................................................................................................................... 5 1.4. Accessory information .............................................................................................................................. 5 1.5. Sample calculation .................................................................................................................................... 5 1.6. Measurement Uncertainty ......................................................................................................................... 5 1.7. Frequency/channel operations ................................................................................................................... 5 2. Summary of tests ........................................................................................................................................................ 6 3. Test results .................................................................................................................................................................. 7 3.1. 6 ㏈ bandwidth ........................................................................................................................................ 7 3.2. Output power ............................................................................................................................................. 9 3.3. Power spectral density ............................................................................................................................. 11 3.4. Radiated restricted band and emissions ................................................................................................... 13 3.5. Conducted spurious emissions & band edge ........................................................................................... 29 Appendix A. Measurement equipment ......................................................................................................................... 32 Appendix B. Test setup photos ..................................................................................................................................... 33 KES Co., Ltd. 3701, 40, Simin-daero 365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Korea Tel: +82-31-425-6200 / Fax: +82-31-424-0450 www.kes.co.kr Report No.: KES-RF1-22T0126 Page ( 4 ) of ( 33 ) This report shall not be reproduced except in full, without the written approval of KES Co., Ltd. The results shown in this test report refer only to the sample(s) tested unless otherwise stated. The authenticity of the test report, contact [email protected] KES-QP-7081-06 Rev. 7 KES A4 1. General information Applicant: Salted Co., Ltd. Applicant address: 6F, 603, Eonju-ro, Gangnam-gu, Seoul, Republic of Korea. Test site: KES Co., Ltd. Test site address: 3701, 40, Simin-daero 365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Korea 473-29, Gayeo-ro, Yeoju-si, Gyeonggi-do, Korea Test Facility FCC Accreditation Designation No.: KR0100, Registration No.: 444148 FCC rule part(s): 15.247 FCC ID: 2AL6N-ST-BTIN003R Test device serial No.: Production Pre-production Engineering 1.1. EUT description…

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KES Co., Ltd. 3701, 40, Simin-daero 365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Korea Tel: +82-31-425-6200 / Fax: +82-31-424-0450 www.kes.co.kr Report No.: KES-RF1-22T0126 Page ( 33 ) of ( 33 ) This report shall not be reproduced except in full, without the written approval of KES Co., Ltd. The results shown in this test report refer only to the sample(s) tested unless otherwise stated. The authenticity of the test report, contact [email protected] KES-QP-7081-06 Rev. 7 KES A4 Appendix B. Test setup photos Radiated N/A The end of test report.