2A27S-WB100KSmart Diaper Sensor

Components 1p Nursery night light Charge cable Battery replacement peak User's manual& Product warranty Sticker WeeBell Band Power State LED Nursery night light Power and action button Learn more about products Main body How to use? Power supply location For power on the device, please press the center of main device b * When the power is on, the red LED flashes, please wait for the publishing color LED to turn off Connect with WeeBell app and light(see p.3) Put the WeeBell On diaper(see p.5) 1 2 3 2p APP WeeBell app install Open WeeBell > Register device Select and connect the sensor code of the device you want to connect to 1 2 3 3p Register WeeBell with nursery night light Power supply location State LED Power and action button POWER ON : Press the button once / OFF : Press and hold button While in pairing mode, until the green light of the cloud lamp flashes, Keep pressing the power supply on the Weebell After turn on light, if you press the button twice in a row to enter pairing mode green light is on 12 2QH:HH%HOOLVUHͤVWHUHGIRURQHQXUVHU\QLJKWOLJKW 1XUVHU\QLJKWOLJKWQRWLͤFDWLRQZRUNVHYHQDSSLVWXUQHGRII Nursery night light function Possible to Brightness control through touch the light (Step 3. Brightness adjustment) Urine small amount: blue light flashes slowly and remains on Urine large amount: blue light flashes fast :KHQWKHGLDSHULVFKDQJHGQRWLͤFDWLRQZLOOWXUQRII Automatically and return to the original state. ,I\RXZDQWWRWXUQRIIQRWLͤFDWLRQVSOHDVHSUHVVWKHEXWWRQDWWKHERWWRP Mood light 1RWLͤFDWLRQ light 4p No connection Pairing mode Signal detection status Recharge required status charging Red light on Green light on Green light Blinking Red light on When it charging, the red light turns on at the bottom, When completing the charge, the red light turns off State LED User's manual 6DIHW\3UHFDXWLRQVDQG3URGXFW6SHFLͤFDWLRQV - Do not use the product for anything other than its intended purpose.This can cause damage 'RQRWGLVDVVHPEOHRUUHSDLUWKHSURGXFWDUELWUDULO\7KLVFDQFDXVHIDLOXUHDQGͤUH 'RQRWVWRUHWKHSURGXFWLQDKRWSODFHRUQHDUDͤUHDUP7KHDSSHDUDQFHPD\EHGHIRUPHG - Be careful not to get chemicals on the product. The product may be damaged and may be transferred to the human body. - Watch out for falls, flooding, and shocks. The inside may be broken. - Be careful not to let infants or pets wash or bite the product - It is recommended to use this device for infants of 0-24 months, and if infants of 24 months or older use it, caution such as shock and disintegration is required. - If the battery is replaced, there is a risk that the infant will swallow the battery replacement peak and the separated parts Be sure to separate and store the main body and band out of reach of infants and toddlers. KC Authentication number Name of Product Name of model Rated power supply A wireless transmission system Product size Weight of product Terms of use Storage environment XFFCFMM

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UNITED STATES DESIGNATED AGENT LETTER Date: 2023-07-10 TO: Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 Applicant U.S. designated agent Company Name: SDsens Co., Ltd. Company Nam e: Cornerstone Consulting Strategies, Inc. Grantee Code: 2A27S FRN 0033495714 Contact Name: Kyungsik Kim Contact Name: Kevin Lee Address: 302, 2, Yonggu-daero 2152beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, South Korea 16965 Address: 1699 Wall Street Suite 200- C, Mt. Prospect, IL 60056 Telephone: +82-31-274-2323 Telephone: (224) 836-1249 Email: [email protected] Email: [email protected] Grantee Code: 2A27S ATTN: Director of Certification: We, <SDsens Co.,Ltd.> and Cornerstone Consulting Strategies, Inc. understand and acknowledge the applicants consent and the designated agent ’s obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and e-mail of the designated agent listed above. We, <SDsens Co.,Ltd.> and Cornerstone Consulting Strategies, Inc. acknowledge the applicant’s acceptance of its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Applicant U.S. designated agent Name (Printed): Kyungsik Kim Name (Printed): Kevin Lee Title: Research Director Title: Executive Officer Signature: Signature:

Applicant Declaration QSF27-14-04 Rev 1.0 Rev. Feb 6, 2023 Page 1 of 1 Original Issue: Jan. 4, 2021 SGS North America Inc. 620 Old Peachtree Road SUITE 100 Suwanee, Georgia 30024 United States Applicant Legal Business Name SDsens Co., Ltd. Address 302, 2, Yonggu-daero 2152beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, South Korea 16965 Grantee Code 2A27S FCC ID 2A27S-WB100K Authorized Contact Name Kyungsik Kim Contact Email [email protected] Contact Phone +82-10-6566-0492 I, the undersigned, certify that I am an authorized signatory for the Applicant and therefore declare; a)in accordance with 47CFR2.911(d), all of the statements herein and the exhibits attached hereto are true and correct to the best of my knowledge and belief. b)in accepting a Grant of Equipment Authorization issued by a TCB, under the authority of the FCC, as a result of the representations made in this application, the Applicant is responsible for: (1) labeling the equipment with the exact FCC ID as specified in this application, (2) compliance statement labeling pursuant to the applicable rules, (3) compliance of the equipment with the applicable technical rules, c)if the Applicant is not the actual manufacturer of the equipment, appropriate arrangements have been made with the manufacturer to ensure that production units of this equipment will continue to comply with the FCC’s technical requirements. d)in accordance with 47 CFR 2.909 and KDB394321, the Applicant has read, understood and agrees to accept that they are the responsible party and agree to abide by their responsibilities as specified under 47 CFR 2.909 and KDB394321. e)in accordance with ISO 17065, FCC KDB641163, FCC KDB610077, KDB394321 and RSP-100, the Applicant has read, understood, accepts and agrees to abide by the post market surveillance requirements. (1) the Applicant understands, accepts and agrees that a sample may be requested for surveillance testing. (2) the Applicant shall make provisions to always have a production sample available upon request by SGS, FCC and/or ISED. (3) the Applicant shall, upon request by SGS, at the Applicant’s expense, provide a production sample of the requested product to SGS, FCC and/or ISED as instructed. The sample shall include all support devices, cables, software, accessories or other hardware or software required for evaluation, review, certification and audit surveillance of products certified by SGS. f)neither the Applicant nor any party to the application is 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. §862 because of a conviction for possession or distribution of a controlled substance. See 47CFR 1.2002(b) for the definition of a “party” for these purposes. g)the Applicant has read, understood, accepts and agrees to abide by the SGS North America, Inc.(TCB) terms and conditions. Link to CFRs: https://www.fcc.gov/wireless/bureau-divisions/technologies-systems-and-innovation-division/rules-regulations-title-47 Link to KDBs: https://apps.fcc.gov/oetcf/kdb/index.cfm Link to RSP-100: https://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf01130.html Link to the Covered List: Covered List [SDsens 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. [SDsens 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, established pursuant to §1.50002, as an entity producing “covered” equipment. Applicant Signature: Date:2023-07-10 Print Name: Kyungsik Kim Title: Research Director *NOTE: This declaration cannot be signed by an Agent, it shall be signed by an authorized person listed in the FCC database

Item Contents Antenna Type Chip Antenna Antenna peak gain 1.99 ㏈i Manufacturer / Model name DIT Co. / - Address of manufacturer 24 Block 1 Lot, 451, Nonhyeon-dong, Namdong-gu, Incheon, 21634, Korea Test Laboratory DIT Co. Antenna Length 0.4 cm Antenna Width 0.2 cm Antenna Information Chip Antenna Length Width Bluetooth Chip Antenna For ISM 2.4 GHz Applications  Part number : AHSBTF0402-L00 Dimensions Specification Frequency 2400 ~ 2485 MHz VSWR 2.0 max Peak Gain 1.9 dBi min Radiation Pattern Omni-directional Input Impedance 50 ohm <Typical Test Board> • Ground size : 37 X 42 mm Size: 4(L) by 2(w) by 1.25(t) mm (Tolerance : ±0.1 mm(* : -0.0 ~ +0.2mm)) * * [email protected] +82-2-6406-5590 VSWR on Evaluation Board Gain on Evaluation Board (2D) Azimuth Plane(XY) Elevation1 Plane(YZ) Elevation2 Plane(ZX) (unit : dBi) Frequency (MHz) Azimuth Plane(XY) Elevation1 Plane(YZ) Elevation2 Plane(ZX) Peak Gain Peak Gain Peak Gain 2400 -1.0 -0.7 -0.8 2450 1.4 1.3 1.0 2500 0.3 0.5 0.7 Photo / Graph 2450.000Mhz Typical Test Board Recommended Pad Layout Gain on Evaluation Board (3D) Frequency (MHz) 3D Data Peak Gain Avg. Gain 2400 -0.4 -3.3 2450 1.9 -1.0 2500 1.0 -1.8 Ant 50 ohm Feeding No ground area <Ground Plane> 42 1.2 mm gap from ground 37 Matching circuit added in the feeding line - T-type : series + shunt - π-type : shunt + series + shunt (unit : dBi) 1: Input Pad 2: Ground Pad 3: Ground Pad 4: Non-Contact (For SMT) ③ ① ④ ② 2 4 1 2 0 . 8 ① ② ③ ④ 0.5 0.5 0.5

SDsens Co., Ltd. 302, 2, Yonggu-daero 2152beon-gil, Giheung-gu, Yongin-si, South Korea, 16965 Date : 2023-07-10 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road, Columbia, MD 21046 LETTER FOR AUTHORIZATION FCC ID: 2A27S-WB100K To whom it may concern: I, the undersigned, hereby authorize SGS Korea Co., Ltd. and hereafter referred to as SGS Korea, 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 SGS Korea 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 SGS Korea 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; SDsens Co., Ltd. 302, 2, Yonggu-daero 2152beon-gil, Giheung-gu, Yongin-si, South Korea, 16965 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; 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 Name : Kyungsik Kim Title : Research Director Company Name : SDsens Co., Ltd.

SDsens Co., Ltd. 302, 2, Yonggu-daero 2152beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, South Korea 16965 Date : 2023-07-10 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road, Columbia, MD 21046 REQUEST FOR CONFIDENTIALITY FCC ID: 2A27S-WB100K 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, (SDsens Co., Ltd.) 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 , (SDsens Co., Ltd.) temporary confidentiality of commercially sensitive information prior to product release. The requested Permanent and Temporary Confidential exhibits are listed as follows: CONFIDENTIAL LIST Permanent 1 Block Diagram 2 Operational Descriptions 3 Schematics Short-Term 4 External Photos 5 Internal Photos 6 Test-Setup Photos 7 User Manual 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 Yours Name : Kyungsik Kim Title : Research Director Company Name : SDsens., Co., Ltd.

SDsens Co., Ltd. 302, 2, Yonggu-daero 2152beon-gil, Giheung-gu, Yongin-si, South Korea, 16965 Letter of Declaration Product Equality July 10, 2023 We, as a manufacturer, hereby declare that our product has variant model names as listed below. Variant models are totally same as basic model but they have different material. Each model differences are described in the below table. Model Name Material of pad to attach to diaper No. of pad to attach to diaper WB100K Velcro 4 WB100K-V6 Velcro 6 WB100K-V2 Velcro 2 WB100K-S6 Silicone 6 WB100K-S2 Silicone 2 Sincerely yours, Kyungsik Kim / Research Director SDsens Co., Ltd. Tel : +82-31-274-2323 E-mail: [email protected]

Model name: WB100K External photos of EUT Model name: WB100K Top view of EUT Bottom view of EUT Model name: WB100K Side view of EUT Model name: WB100K

Label Information_WB100K LABEL *The device is too small to insert label, so it would be in the package. -Package location -Bottom view ofEUT FCC ID : 2A27S - WB100K

Model name: WB100K Internal photos of EUT Model name: WB100K Internal view of EUT Model name: WB100K Top view of Main PCB Bottom view of Main PCB Model name: WB100K View of Antenna & Module Chip Antenna Bluetooth LowEnergy Module

FCC ID: 2A27S-WB100K According to KDB 447498 D04 Interim General RF Exposure Guidance v01 1. 1-mW Test Exemption Per § 1.1307(b)(3)(i)(A), a single RF source is exempt RF device (from the requirement to show data demonstrating compliance to RF exposure limits, as previously mentioned) if the available maximum time-averaged power is no more than 1 ㎽, regardless of separation distance. This exemption applies to all operating configurations and exposure conditions, for the frequency range 100 ㎑ to 100 ㎓, regardless of fixed, mobile, or portable device exposure conditions. This is a standalone exemption, and it cannot be applied in conjunction with any other test exemption. 2. Test Result Mode Frequency Range (㎒) Minimum Separation Distance (㎝) Maximum Average Target Power (㏈m) Maximum Tune up (㏈) Maximum Average Output Power (㏈m) Limit Result (㏈m) (㎽) (㎽) Bluetooth Low Energy 2 402 ~ 2 480 0 -3 1 -2 0. 631 1 Pass Note ; - Maximum average target power is the manufacturer’s declared rated power. - Maximum average output power = Maximum average target power ( ㏈m) + Maximum tune up (㏈). 3. Conclusion: No SAR is required.

SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, Korea, 15807 Tel. +82 31 428 5700 / Fax. +82 31 427 2370 http://www.sgsgroup.kr Report Number: F690501-RF-RTL004174 Page: 2 of 32 RTT7081-02(2020.10.05)(0) A4(210 mm * 297 mm) INDEX Table of contents 1. General Information -------------------------------------------------------------------------------------- 3 2. Transmitter Radiated Spurious Emissions and Conducted Spurious Emissions ---------- 8 3. 6 ㏈ Bandwidth -------------------------------------------------------------------------------------------- 23 4. Maximum Peak Conducted Output Power --------------------------------------------------------- 26 5. Power Spectral Density --------------------------------------------------------------------------------- 29 6. Antenna Requirement ----------------------------------------------------------------------------------- 32 SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, Korea, 15807 Tel. +82 31 428 5700 / Fax. +82 31 427 2370 http://www.sgsgroup.kr Report Number: F690501-RF-RTL004174 Page: 3 of 32 RTT7081-02(2020.10.05)(0) A4(210 mm * 297 mm) 1. General Information 1.1. Testing Laboratory SGS Korea Co., Ltd. (Gunpo Laboratory) - 10-2, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, Korea, 15807 - 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, Korea, 15807 - Designation number: KR0150 All SGS services are rendered in accordance with the applicable SGS conditions of service available on request and accessible at http://www.sgs.com/en/Terms-and-Conditions.aspx. Phone No. : +82 31 688 0901 Fax No. : +82 31 688 0921 1.2. Details of Applicant Applicant : SDsens Co., Ltd. Address : 302, 2, Yonggu-daero 2152beon-gil, Giheung-gu, Yongin-si, South Korea, 16965 Contact Person : Kim, Kyung-sik Phone No. : +82 10 6566 0492 1.3. Details of Manufacturer Company : Same as applicant Address : Same as applicant 1.4. Description of EUT Kind of Product Smart Diaper Sensor Model Name WB100K Variant Model Name WB100K-V6, WB100K-S6, WB100K-V2, WB100K-S2 Serial Number Conducted Sample: 001 Radiated Sample: 002 Power Supply DC 3 V Frequency Range 2 402 ㎒ ~ 2 480 ㎒ (Bluetooth Low Energy) Modulation Technique GFSK Number of Channels 40 channels (Bluetooth Low Energy) Antenna Type Chip Antenna Antenna Gain ※ 1.99㏈i H/W Version 1.6 S/W Version 1.10 SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, Korea, 15807 Tel. +82 31 428 5700 / Fax. +82 31 427 2370 http://www.sgsgroup.kr Report Number: F690501-RF-RTL004174 Page: 4 of 32 RTT7081-02(2020.10.05)(0) A4(210 mm * 297 mm) 1.5. Test Equipment List Equipment Manufacturer Model S/N Cal. Date Cal. Interval Cal. Due Signal Generator R&S SMA100B 106887 Oct. 13, 2022 Annual Oct. 13, 2023 Signal Generator R&S SMBV100A 259067 Jun. 15, 2023 Annual Jun. 15, 2024 Spectrum Analyzer R&S FSV30 103210 Dec. 07, 2022 Annual Dec. 07, 2023 Spectrum Analyzer Agilent N9020A MY53421758 Aug. 26, 2022 Annual Aug. 26, 2023 Attenuator AEROFLEX / INMET 40AH2W-10 40G-1 Jun. 14, 2023 Annual Jun. 14, 2024 High Pass Filter Wainwright Instrument GmbH WHKX3.0/18G-10SS 21 Jun. 01, 2023 Annual Jun. 01, 2024 High Pass Filter Wainwright Instrument GmbH WHNX7.5/26.5G-6SS 11 Oct. 24, 2022 Annual Oct. 24, 2023 Low Pass Filter Mini-Circuits NLP-1200+ V 8979400903-2 Feb. 09, 2023 Annual Feb. 09, 2024 Power Sensor R&S NRP-Z81 100669 May 16, 2023 Annual May 16, 2024 DC Power Supply R&S HMP2020 102130 Apr. 27, 2023 Annual Apr. 27, 2024 Preamplifier H.P. 8447F 2944A03909 Aug. 04, 2022 Annual Aug. 04, 2023 Signal Conditioning Unit R&S SCU-18 10117 Jun. 15, 2023 Annual Jun. 15, 2024 Preamplifier TESTEK TK-PA1840H 130016 Jan. 11, 2023 Annual Jan. 11, 2024 Loop Antenna Schwarzbeck Mess-Elektronik FMZB 1519 1519-039 Aug. 23, 2021 Biennial Aug. 23, 2023 Bilog Antenna Schwarzbeck Mess-Elektronik VULB9163 01126 Feb. 09, 2023 Annual Feb. 09, 2024 Horn Antenna R&S HF906 100326 Feb. 28, 2023 Annual Feb. 28, 2024 Horn Antenna Schwarzbeck Mess-Elektronik BBHA 9170 9170-540 Nov. 30, 2022 Annual Nov. 30, 2023 Test Receiver R&S ESU 26 100109 Jan. 18, 2023 Annual Jan. 18, 2024 Turn Table Innco systems GmbH DS 1200 S N/A N.C.R. N/A N.C.R. Controller Innco systems GmbH CONTROLLER CO3000-4P CO3000/963/383 30516/L N.C.R. N/A N.C.R. Antenna Mast Innco systems GmbH MA4640-XP-ET MA4640/536/383 30516/L N.C.R. N/A N.C.R. Anechoic Chamber SY Corporation L × W × H (9.6 m × 6.4 m × 6.6 m) N/A N.C.R. N/A N.C.R. Coaxial Cable RFONE MWX221-NMSNMS (4 m) J1023142 Apr. 04, 2023 Semi- Annual Oct. 04, 2023 Coaxial Cable Qualwave Inc. QA500-18-NN-10 (10 m) 22200114 Apr. 04, 2023 Semi- Annual Oct. 04, 2023 Coaxial Cable RFONE PL360P-292M292M-1.5M- A 20200324002 Apr. 14, 2023 Semi- Annual Oct. 14, 2023 Note; For equipment listed above that has a calibration date or calibration due date that falls within the test date range, care was taken to ensure that this equipment was used after the calibration date and before the calibraition due date. SGS Korea Co., Ltd. 4, LS-ro 182beon-gil, Gunpo-si, Gyeonggi-do, Korea, 15807 Tel. +82 31 428 5700 / Fax. +82 31 427 2370 http://www.sgsgroup.kr Report Number: F690501-RF-RTL004174 Page: 5 of 32 RTT7081-02(2020.10.05)(0) A4(210 mm * 297 mm) 1.6. Declaration by the Manufacturer - The Bluetooth version of the EUT is 5.0 and only 37 bytes of PHY 1M are supported. 1.7. Summary of Test Results The EUT has been tested according to the following specifications: APPLIED STANDARD: Part 15 Subpart C Section Test Item(s) Result 15.205(a) 15.209 15.247(d) Transmitter Radiated Spurious Emissions and Conducted Spurious Emission Complied 15.247(a)(2) 6 ㏈ Bandwidth Complied 15.247(b)(3) Maximum Peak Conducted Output Power Complied 15.247(e) Power Spectral Density Complied 15.207 AC Power Line Conducted Emission N/A 1) Note; 1) The AC power line test was not performed because the EUT use battery power for operation and which do not operate from the AC power lines. 1.8. Test Procedure(s) The measurement procedures described in the American Nationa…

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Model name: WB100K Test setup photos of EUT Model name: WB100K 1. Orthogonal plane of EUT - The testing was set in the three orthogonal planes and measured for each position (X, Y, Z). X-axis Y-axis Model name: WB100K Z-axis Model name: WB100K 2. Photos of Radiated Spurious Emission Test (Below 1㎓) Model name: WB100K 3. Photo of Radiated Spurious Emission Test (Above 1㎓) Model name: WB100K 4. Photo of Conducted Test