2BSXF-ECO43RFLCD digital signage

Refee Technology Co., Ltd 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – EquipmentType Company name: Refee Technology Co., Ltd Address: Floor3, Building1, Hanyu Innovation Park, LiyuanRoad, Fuyong, Bao’an District, Shenzhen, China Product Name: LCD digital signage FCC ID: 2BSXF-ECO43RF Model(s): ECO43RF, ECO43RFA, ECO43RFA Pro, ECO43RFA Plus, ECO43RFM, ECO43MFA, ECO43SPA, ECO43RFA8, ECO49RFA 2.911(d)(5)(i) EquipmentType We, [Refee Technology Co., Ltd] (“the applicant”) certify that the equipment for which authorization is sought through certification is not:  Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules.  Identified as an equipment type in the “Covered List”NOTE 1 Yours sincerely, Name: Mengxi Lu Date: Apr. 15, 2026 Title: Product Director Company name: Refee Technology Co., Ltd Signature: NOTE 1 “Covered List ”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Refee Technology Co., Ltd 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Refee Technology Co., Ltd Address: Floor3, Building1, Hanyu Innovation Park, LiyuanRoad, Fuyong, Bao’an District, Shenzhen, China Product Name: LCD digital signage FCC ID: 2BSXF-ECO43RF Model(s): ECO43RF, ECO43RFA, ECO43RFA Pro, ECO43RFA Plus, ECO43RFM, ECO43MFA, ECO43SPA, ECO43RFA8, ECO49RFA 2.911(d)(5)(ii) Applicant filing We, [Refee Technology Co., Ltd] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 ,established pursuant to §1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Name: Mengxi Lu Date: Apr. 15, 2026 Title: Product Director Company name: Refee Technology Co., Ltd Signature: NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List ”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Refee Technology Co., Ltd Agent Authorization Company: Refee Technology Co., Ltd Address:Floor3, Building1, Hanyu Innovation Park, LiyuanRoad, Fuyong, Bao’an District, Shenzhen, China Product Name: LCD digital signage Model Number(s):ECO43RF, ECO43RFA, ECO43RFA Pro, ECO43RFA Plus, ECO43RFM, ECO43MFA, ECO43SPA, ECO43RFA8, ECO49RFA Product Description: LCD digital signage We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: Apr. 15, 2026 Name: Mengxi Lu Title: Product Director Company: Refee Technology Co., Ltd

Refee Technology Co., Ltd Model Difference Declaration To Whom It May Concern, We, Refee Technology Co., Ltd (LCD digital signage); Trade Mark: N/A, Model Number: ECO43RF, ECO43RFA, ECO43RFA Pro, ECO43RFA Plus, ECO43RFM, ECO43MFA, ECO43SPA, ECO43RFA8, ECO49RFA; All model’s the function, software and electric circuit are the same, only with a product model named different. Test sample model: ECO43RF. Please contact me if you have any question. Signature: Date: Apr. 15, 2026 Name: Mengxi Lu Title: Product Director

Refee Technology Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Apr. 15, 2026 Subject; Request for Confidentiality FCC ID:2BSXF-ECO43RF To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Mengxi Lu Title: Product Director

FCC ID LABEL: Ca. 40mm x 30mm Label Location FCC ID: 2BSXF-ECO43RF

MPE ESTIMATION FCC ID: 2BSXF-ECO43RF 1, According to §1.1310, Limit for General Population/ Uncontrolled Exposures Frequency Power density (mW/ cm 2 ) Averaging time(minutes) 300MHz----1.5GHz F/1500 30 1.5GHz---100GHz 1.0 30 Note: F= Frequency in MHz 2, Estimation Result For WIFI: Mode Max PK Output power(dBm) Tune Up Power(dBm) Max Tune Up power(mW) Antenna Gain(dBi) Antenna Gain (Numerical) MPE (mW/cm²) 2462 14.60 14±1(15) 31.62 3 2.00 0.01256 Note: Note: The estimation distance is 20cm Note: PK Output power= conducted power in mW. G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna in cm Conducted power see the test report HK2508134554-E, antenna gain=3dBi when the minimum test separation distance is >20 cm, a distance of 20 cm is applied to determine RF Exposure test exclusion. The test exclusion threshold is 0.01256 (mW/cm²) which is< 1.0 (mW/cm²), RF Exposure testing is not required. -------The End-------

TEL：+86 0755-23073599FAX：+86 0755-23097189E-mail:[email protected] Address :3015, 3rd Floor, No. 1 Sanwei South Road, Bao 'an District, Shenzhen City, Guangdong Province APPROVAL SHEET CUSTOMER： DESCRIPTION： 46 Small mushroom-shaped-4G-174-L1.2M-SMA PART NO.： RF46-A1 CUSPARTNO.： 30.001.025 D A T E： 2025/9/15 Yunding signature ENGINEERING DEPARTMENT Q C DEPARTMENTSALES DEPARTMENT Customer signature ENGINEERING DEPARTMENT Q C DEPARTMENTPURCHASING DEPARTMENT TEL：+86 0755-23073599FAX：+86 0755-23097189E-mail:[email protected] Address :3015, 3rd Floor, No. 1 Sanwei South Road, Bao 'an District, Shenzhen City, Guangdong Province 1.Test items and equipment Test itemsEquipment 1. S11-parameter 1. Return Loss 2. VSWR network analyzer: Agilent E5071B HP 8753D 2.Active test1. Transmittingpower 2. Receiving sensitivity 1. Darkroom ： ETS 7x4x3 m (3D)Chamber ETS 5x3x3 m (3D) Chamber 2.general-purpose tester : Agilent 8960 E5515B ×2 StarPoint SP6011 Cmw500 3. Passive test 1.Gain 2.Efficiency 1. Darkroom ： ETS 7x4x3 m (3D)Chamber ETS 5x3x3 m (3D) Chamber 2. network analyzer：Agilent E5071B HP 8753D TEL：+86 0755-23073599FAX：+86 0755-23097189E-mail:[email protected] Address :3015, 3rd Floor, No. 1 Sanwei South Road, Bao 'an District, Shenzhen City, Guangdong Province 2.Antenna performance SWR TEL：+86 0755-23073599FAX：+86 0755-23097189E-mail:[email protected] Address :3015, 3rd Floor, No. 1 Sanwei South Road, Bao 'an District, Shenzhen City, Guangdong Province 3.Antenna efficiency and gain Frequency/MHzEfficiency / %MaxGain/dBi 70017.020.99 76023.120.11 80030.622.44 86017.91-0.91 90013.09-2.66 96013.71-0.82 170049.891.42 180048.080.24 190054.581.29 200047.531.91 210054.451.1 220047.641.14 230043.851.53 240048.081.64 250052.123 260048.873.35 270048.753.35 TEL：+86 0755-23073599FAX：+86 0755-23097189E-mail:[email protected] Address :3015, 3rd Floor, No. 1 Sanwei South Road, Bao 'an District, Shenzhen City, Guangdong Province TEL：+86 0755-23073599FAX：+86 0755-23097189E-mail:[email protected] Address :3015, 3rd Floor, No. 1 Sanwei South Road, Bao 'an District, Shenzhen City, Guangdong Province TEL：+86 0755-23073599FAX：+86 0755-23097189E-mail:[email protected] Address :3015, 3rd Floor, No. 1 Sanwei South Road, Bao 'an District, Shenzhen City, Guangdong Province 4.Antenna structure diagram： TEL：+86 0755-23073599FAX：+86 0755-23097189E-mail:[email protected] Address :3015, 3rd Floor, No. 1 Sanwei South Road, Bao 'an District, Shenzhen City, Guangdong Province Technical parameters of electrical appliances Electrical Specifications Frequency Range 700~960/1700~2700MHz VSWR ≤3.0 Input Impedance50 Ω Gain3.35 DBI Mechanical Specifications Antenna colorBLACK Input connectorSMA Antenna length1.2M Working Temperature -40°C~+85°C Working Humidity20~80%

Page 1 of 64 Report No.: HK2508134554-E FCC Test Report Test report On Behalf of Refee Technology Co., Ltd For LCD digital signage Model No.: ECO43RF, ECO43RFA, ECO43RFA Pro, ECO43RFA Plus, ECO43RFM, ECO43MFA, ECO43SPA, ECO43RFA8, ECO49RFA FCC ID: 2BSXF-ECO43RF Prepared For : Refee Technology Co., Ltd Floor3, Building1, Hanyu Innovation Park, LiyuanRoad, Fuyong, Bao’an District, Shenzhen, China Prepared By : Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Aug. 13, 2025 ~ Nov. 25, 2025 Date of Report: Nov. 25, 2025 Report Number: HK2508134554-E Applican Address . Manufac t Address . Product d Trade Ma Product n Model(s) Standar d This publi the Shen source o f and will reproduc e Date of Te Date (s) o Date of Is Test Resu t’s name ... .................. turer's Nam .................. description rk: ame ............ Name ...... ds ............... ication may zhen HUA fthe materi not assu m ed material est ............. of performan ssue ............ ult ................ T T A ............... : ............... : me ........... : ............... : n ................. : ............... : ............... : y be reprod K Testing T al. Shenzhe me liability due to its p .................. nce of tests .................. .................. Testing Eng Technical M Authorized S Test Re Refee Tec Floor3, B u Bao’an Dis Refee Tec Floor3, B u Bao’an Dis N/A LCD digit a ECO43RF ECO43RF ECO49RF FCC Rules ANSI C63 uced in wh Technology en HUAK T for damag placement a ............. : ............. : ............. : ............. : inee r Manager Signatory Page 2 of sult Cert hnology Co uilding1, Ha strict, Shenz hnology Co uilding1, Ha strict, Shenz al signage F, ECO43RF FM, ECO43M FA s and Regu .10: 2020 ole or in p a y Co., Ltd. Testing Tech ges resultin and context. Aug. 13, 20 Nov. 25, 20 2 Pass f64 tification o., Ltd nyu Innova t zhen, China o., Ltd nyu Innova t zhen, China FA, ECO43R MFA, ECO4 ulations Part art for non-c is acknow hnology Co ng from the 25 ~ Nov. 25 25 Len Liao Sliver Wa Jason Zh o Report n tion Park, L a tion Park, L a RFA Pro, EC 43SPA, ECO t 15 Subpar commercia wledged as o., Ltd. take e reader's 5, 2025 o an ou No.: HK250 LiyuanRoad LiyuanRoad CO43RFA P O43RFA8, rt C Section l purposes copyright o es no respo interpreta t 08134554-E , Fuyong, , Fuyong, Plus, n 15.247 as long as owner and nsibility for tion of the Page 3 of 64 Report No.: HK2508134554-E Table of Contents 1. Summary ................................................................................................... 5 1.1. Test Procedures and Results ........................................................................................................... 5 1.2. Information of the Test Laboratory ................................................................................................. 5 1.3. Measurement Uncertainty ................................................................................................................ 6 2. EUT Description ........................................................................................ 7 2.1. General Description of EUT ............................................................................................................. 7 2.2. Carrier Frequency of Channels ........................................................................................................ 8 2.3. Operation of EUT During Testing .................................................................................................... 8 2.4. Description of Test Setup ................................................................................................................. 9 2.5. Description of Support Units ......................................................................................................... 10 3. Genera Information ................................................................................. 11 3.1. Test Environment and Mode .......................................................................................................... 11 4. Test Results and Measurement Data .................................................... 14 4.1. AC Power Line Conducted Emission ............................................................................................ 14 4.2. Maximum Peak Conducted Output Power .................................................................................... 18 4.3. Emission Bandwidth ....................................................................................................................... 20 4.4. Power Spectral Density .................................................................................................................. 28 4.5. Conducted Band Edge and Spurious Emission Measurement .................................................. 37 4.6. Radiated Spurious Emission Measurement ................................................................................. 51 4.7. Antenna Requirement ..................................................................................................................... 61 5. Test Setup Photos of the EUT ............................................................... 62 6. Photos of the EUT ................................................................................... 64 Page 4 of 64 Report No.: HK2508134554-E ** Issued history ** Revision Description Issued Date Remark Revision 1.0 Initial Test Report Release Nov. 25, 2025 Jason Zhou Page 5 of 64 Report No.: HK2508134554-E 1. Summary 1.1. Test Procedures and Results Requirement CFR 47 Section Result Antenna requirement §15.203/§15.247(b)(4) PASS AC Power Line Conducted Emission §15.207 PASS Conducted Peak Output Power §15.247(b)(3) PASS 6dB Emission Bandwidth §15.247(a)(2) PASS Power Spectral Density §15.247(e) PASS Band Edge §15.247(d) PASS Spurious Emission §15.205/§15.209 PASS Note: 1. P…

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Th or each me mum powe uously. kHz, VB W ssions mea side of the ated by at and peak P k conducte nsmitter co sed on the he attenuat l be 30 dB cord the re ental frequ t line in the Report sion Mea 47 (d) eas Guidan h outside missions w be attenuat m PSD lev d radiated defined i n he radiate a). ulation KDB Publica 05r02. s connecte e path loss easuremen er setting a W=300 kHz asured in a authorized least 20 dB PSD level i d output p omplies wit e use of RM tion require B instead of esults in th uency shou e operating No.: HK250 asuremen nce v05r02 of the a which fal ted at leas vel in 100 k emissions n Section ed emiss ation 5580 ed to the sp s was com nt. nd enable z, Peak Det any 100 kH d frequency B relative t n 100 kHz ower proce th the cond MS averag ed under th f 20 dB pe e test repo uld be excl g frequenc 08134554-E nt 2 authorized l in the st 20 dB / kHz by RF s which fall 15.205(a), ion limits 074 D01 pectrum mpensated the EUT tector. Hz y band to the when edure is ducted ging over a his r ort. uded cy band. Page 38 of 64 Report No.: HK2508134554-E Test Instruments RF Test Room Equipment Manufacturer Model Serial Number Calibration Date Calibration Due Spectrum analyzer Agilent N9020A HKE-025 Feb. 19, 2025 Feb. 18, 2026 Spectrum analyzer Agilent N9020A HKE-117 Feb. 19, 2025 Feb. 18, 2026 RF cable Times 1-40G / Feb. 19, 2025 Feb. 18, 2026 RF automatic control unit Tonscend JS0806-2 HKE-060 Feb. 19, 2025 Feb. 18, 2026 RF Test Software Tonscend JS1120-3 Version 3.5.39 HKE-083 / / Note: The calibration interval of the above test instruments is 12 months and the calibrations are traceable to international system unit (SI). Test Data 802.11b Mo a odulation Lowes Ban Spuriou st Channel nd Edge us Emissionn Page 39 of f64 S Report Highest C Band E Spurious E No.: HK250 Channel Edge Emission 08134554-E Page 40 of f64 Report No.: HK25008134554-E Mi Spu Page 41 of iddle Chan urious Emis f64 nnel ssion Report No.: HK25008134554-E 802.11g Mo odulation Lowes Ban Spuriou st Channel nd Edge us Emissio n Page 42 of f64 S Report Highest C Band E Spurious E No.: HK250 Channel Edge Emission 08134554-E Page 43 of f64 Report No.: HK25008134554-E Mi Spu Page 44 of iddle Chan urious Emis f64 nnel ssion Report No.: HK25008134554-E 802.11n(HT T20) Modul Lowes Ban Spuriou ation st Channel nd Edge us Emissio l on Page 45 of f64 S Report Highest C Band E Spurious E No.: HK250 Channel Edge Emission 08134554-E Page 46 of f64 Report No.: HK25008134554-E Mi Spu Page 47 of iddle Chan urious Emis f64 nnel ssion Report No.: HK25008134554-E 802.11n(HT T40) Modul Lowes Ban Spuriou ation st Channel nd Edge us Emissio on Page 48 of f64 S Report Highest C Band E Spurious E No.: HK250 Channel Edge Emission 08134554-E Page 49 of f64 Report No.: HK25008134554-E Mi Spu Page 50 of iddle Chan urious Emis f64 nnel ssion Report No.: HK25008134554-E 4.6. Ra Test Spec Test Re Test M Freque Measu Antenn Operat Receiv Limit: Test se adiated S cification equiremen ethod: ency Rang rement Di na Polariz tion mode ver Setup: etup: Spurious nt: ge: istance: ation: e: Emissio FCC Pa ANSI C 9 kHz t 3 m Horizon Transm Freque 9kHz- 15 150k 30M 30MHz- Above F 0 0 A Freq Abov For rad 30MHz Page 51 of on Measu art15 C Se C63.10: 202 to 26 GHz ntal & Vert mitting mod ency De 50kHz Quas Hz- Hz Quas -1GHz Quas 1GHz P P Frequency .009-0.490 .490-1.705 1.705-30 30-88 88-216 216-960 Above 960 quency ve 1GHz diated emis z to 1GHz f64 urement ection 15.2 20 ical de with mod tector RB si-peak 20 si-peak 9k si-peak 120 Peak 1M Peak 1M Fie (micr 24 24 Field Stren (microvolts/m 500 5000 ssions belo Report 209 dulation BW VBW 0Hz 1kH kHz 30kH 0KHz 300K MHz 3MH MHz 10H eld Strength rovolts/meter) 400/F(KHz) 000/F(KHz) 30 100 150 200 500 ngth meter) Meas Dis (m ow 30MHz No.: HK250 W Re z Quasi-p Hz Quasi-p Hz Quasi-p Hz Peak z Averag Meas u Distance 3 3 3 surement stance meters) D 3 A 3 08134554-E mark eak Value eak Value eak Value k Value ge Value urement e (meters) 300 30 30 3 3 3 3 Detector Average Peak Test Pr rocedure: Above 1. For t The abo inte on t EUT the (fro m read for t 2. For t Plac 0.1 are a emi whi l the sig n max may dep and rece Page 52 of 1GHz the radiate e EUT was ove ground rference re the top of a T was arra antenna to m 0 degree ding. A pre the test in the radiate ce the mea meter abo a of the EU ssions at t le keeping source of nificant em ximum resp y have to b pending on staying a i eiving the m f64 d emission placed on . The EUT eceiving an a variable h nged to its ower (from e to 360 de e-amp and order to ge d emission asurement ove ground UT determi the specifie the measu emissions issions, w i ponse. The be higher o the radiat imed at the maximum Report n test below n a turntabl T was set 3 ntenna, wh height ante s worst cas 1 m to 4 m egrees) to a high PAS et better sig n test abov antenna o , which is ined to be ed measur urement an at each fre ith polariza e measure or lower tha ion pattern e emission signal. 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Test Model: ECO43RF Radiated Emission AC Conducted Emission RF Conducted Emission