2A2TG-LXDB4IWIFI doorbell

WIFI Doorbell Quick Start Guide for Model:LXDB4I-WIFI Safety Requirements 1 Installation Requirements • Comply with all local electrical safety codes and standards when operating the product. • Check if the power supply is correct before operating the product. • Follow the electrical requirements to power the product. Requirements for selecting a power adapter: • The power supply must conform to the IEC 60950-1 and IEC 62368-1 standards. • The voltage must meet SELV (Safety Extra Low Voltage) requirements and not exceed ES-1 standards. • The power supply must meet LPS requirements and not exceed PS2. • The power supply requirements (such as rated voltage) are subject to the product label. • Do not connect the product to more than two power supplies unless otherwise specified. • The product must be installed in a location only professionals can access to avoid the risk of non-professionals becoming injured from accessing the area while the product is in operation. Professionals must have full knowledge of the safeguards and risks when using the product. Operation Requirements • Do not open the cover when the product is powered on. • Do not touch the heat dissipation component of the product. Check the items below to make sure every installation part is included and in proper condition. Packing List Add Devices in App 1 Connect the doorbell to the power supply via the USB Type-C wire and wait for the indicator light to turn on. Connect the chime to the appropriate power outlet to power it on. 2 Download and install the App. Open the App and register for a new account, then log in with your new credentials to begin. 3 Use the App to scan the QR code on the doorbell/chime. Follow the on- screen instructions to add and configure the devices. You can view the doorbell screen within the App. WIFI Doorbell Installation Guide 1 x WIFI Doorbell 1 x Flat Bracket (with 2 x Locking Tab) 1 x Angle- adjustable Bracket 2 x Product Literature ●Installation Position Choose an appropriate installation location, ensuring that power supply is available and that the camera can cover the desired monitoring area. It is recommended to install at a height of 1.2 meters. Note: If you are unsure about the installation location, you can power the doorbell and check the live view in the App. Choose a location where you can see the desired field of view. Once the doorbell can capture the desired field, you can proceed with the subsequent installation steps. Component Introduction Lens Microphone LED Indicator Call Button USB Type-C Port Power Ports Micro SD Card Slot Reset Speaker Please shut off the power at the circuit breaker before installation. If you have the existing doorbell system, please remove the doorbell. Pull the two power supply wires carefully when removing the exsiting doorbell. Straighten the wire ends if necessary. ●Installation Steps Follow the instructions below to install the doorbell onto the wall. We provide an angle-adjustable bracket to help achieve a more complete view. You can select the angle-adjustable bracket based on your needs. Stick the mounting template at the appropriate position on the wall. Make sure it is level. Then drill 5mm holes at the marked screw hole locations. 1 2 If you choose the flat bracket installation: Remove the two locking tabs from the flat bracketand keep them safely. Align the flat bracket with the installed wall anchors. Secure the bracket with the supplied screws. Follow the mounting template to drill a wiring hole for the power supply wires. Make sure the length of this hole is at least 20mm. Then firmly tap the wall anchors into the pre-drilled holes using a hammer, ensuring they are flush with the wall surface. ●Detach the Existing Doorbell • The suitable temperature for the device is -25°C to +55°C. • When powered on, please place the device in an environment with normal temperature and good ventilation. 1 x Extension Wire 3 x Wire Nut 2 x Wall Anchor 2 x Phillips Head Screw 2 x Small Phillips Head Screw 1 x Jumper Cable 1 x Power Drill (Not include) 1 x Hammer (Not Include) 1 x Phillips Head Screwdriver (Not Include) Power Plug Indicator Light Speaker Reset Button ● WIFI Doorbell ● Wireless Chime QR Code 1 x Wireless Chime QR Code WIFI Doorbell Description Solid Red The device is starting up or there is a device malfunction. Flashing Red The device is unable to connect to the network. LED Indicator Status We recommend using the power adapter provided with the product (Some products do not come with a power adapter, please refer to the packing list). • Wireless Chime Solid Blue The device is operating normally, and the network is functioning properly. Solid Green WARNING Flashing Blue and Red The device firmware is being upgraded.Flashing Green and Red 1 x Mounting Template For Flat Bracket For Angle-adjustable Bracket Φ5mm Φ5mm Or Recommended Minimum Wiring Hole At Least 20mm[0.79inch] ●Shut off the Power Flashing Blue Quickly ●The device is connecting to the network. Flashing Green Quickly ●The Doorbell is ringing. Flashing Blue Slowly Flashing Green Slowly ●The device is in network configuration mode. ●Someone is answering the call from the Doorbell. Working Environment Remove the chime's cover to expose the terminal connections. Loosen the terminal screws labeled with "FRONT" and "TRANS". 2 1 If you choose the angle-adjustable bracket installation: Remove the two locking tabs from the flat bracket and keep them safely. Align the angle-adjustable bracket with the installed wall anchors and secure the bracket with the supplied screws. Then align the holes of the flat bracket with the holes of the angle-adjustable bracket and tighten the screws. 4a If the length of the power supply wires is sufficient: Connect the wires to the terminals on the back of the doorbell, then tighten the terminal screws. 4b If the power supply wires are too short: Use wire nuts to connect the extension wires and power supply wires. Connect the wires to the terminals on the bac…

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(LT Security Inc) (Jan. 26, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2A2TG-LXDB4I) [LT Security Inc] (“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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, (Applicant signature) (Applicant printed name) Kevin Lin (LT Security Inc) (Jan. 26, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID:2A2TG-LXDB4I) [LT Security Inc] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, (Applicant signature) (Applicant printed name) Kevin Lin

Attestation Statements (Jan. 26, 2026) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for (FCC ID: 2A2TG-LXDB4I) (LT Security Inc) , the undersigned, hereby authorize (LT Security Inc) to act as our designated U.S. agent for service of process, (LT Security Inc) accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. (LT Security Inc) accepts the responsibility to act as designated U.S. agent for service of process. Applicant Information： Company name: LT Security Inc Product Description: WIFI doorbell FRN: 0031239015 Grantee code: 2A2TG FCC ID: 2A2TG-LXDB4I Contact Name: Kevin Lin Address: 17333 Freedom Way,City of Industry,California,United States,91748 Telephone No: 626-435-2838 Email: [email protected] U.S. Agent Information: Company Name: LT Security Inc Address: 17333 Freedom Way,City of Industry,California,United States,91748 City/Province/Zip: 91748 FRN: 0031239015 Contact Name: Kevin Lin Telephone No: 626-435-2838 Email: [email protected] Signature [Name]

LT Security Inc (Jan. 26, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (WIFI doorbell / Model: LXDB4I-WIFI / FCC ID: 2A2TG-LXDB4I) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the (Block diagram, Operational description, Schematics) required to be submitted with this application be permanently withheld from public review. These documents contain detailed system and equipment description and related information about the product which LT Security Inc considers to be proprietary, confidential and a custom design and otherwise would not release to the general public. Since the design is a basis from which future technological products will evolve, LT Security Inc considers that this information would be of benefit to its competitors and that the disclosure of the information in these documents would give competitors an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Name: Kevin Lin Title: Manager Signature of applicant:

LT Security Inc (Jan. 26, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Cerpass technology corporation Test Laboratory) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Name: Kevin Lin Title: Manager Signature of applicant:

CERPASS TECHNOLOGY CORP. Report No.: 25120476 CERPASS TECHNOLOGY CORP. Issued date : Jan. 16, 2026 Page No. : 1 of 6 EXTERNAL PHOTOGRAPHS OF EUT 1) EUT Photo 2) EUT Photo CERPASS TECHNOLOGY CORP. Report No.: 25120476 CERPASS TECHNOLOGY CORP. Issued date : Jan. 16, 2026 Page No. : 2 of 6 3) EUT Photo 4) EUT Photo CERPASS TECHNOLOGY CORP. Report No.: 25120476 CERPASS TECHNOLOGY CORP. Issued date : Jan. 16, 2026 Page No. : 3 of 6 5) EUT Photo 6) EUT Photo CERPASS TECHNOLOGY CORP. Report No.: 25120476 CERPASS TECHNOLOGY CORP. Issued date : Jan. 16, 2026 Page No. : 4 of 6 7) EUT Photo 8) EUT Photo CERPASS TECHNOLOGY CORP. Report No.: 25120476 CERPASS TECHNOLOGY CORP. Issued date : Jan. 16, 2026 Page No. : 5 of 6 9) EUT Photo 10) EUT Photo CERPASS TECHNOLOGY CORP. Report No.: 25120476 CERPASS TECHNOLOGY CORP. Issued date : Jan. 16, 2026 Page No. : 6 of 6 11) EUT Photo 12) EUT Photo

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CERPASS TECHNOLOGY CORP. Report No.: 25120476 CERPASS TECHNOLOGY CORP. Issued date : Jan. 16, 2026 Page No. : 1 of 7 INTERNAL PHOTOGRAPHS OF EUT 1) EUT Photo 2) EUT Photo CERPASS TECHNOLOGY CORP. Report No.: 25120476 CERPASS TECHNOLOGY CORP. Issued date : Jan. 16, 2026 Page No. : 2 of 7 3) EUT Photo 4) EUT Photo CERPASS TECHNOLOGY CORP. Report No.: 25120476 CERPASS TECHNOLOGY CORP. Issued date : Jan. 16, 2026 Page No. : 3 of 7 5) EUT Photo 6) EUT Photo Antenna CERPASS TECHNOLOGY CORP. Report No.: 25120476 CERPASS TECHNOLOGY CORP. Issued date : Jan. 16, 2026 Page No. : 4 of 7 7) EUT Photo 8) EUT Photo RF Chip CERPASS TECHNOLOGY CORP. Report No.: 25120476 CERPASS TECHNOLOGY CORP. Issued date : Jan. 16, 2026 Page No. : 5 of 7 9) EUT Photo 10) EUT Photo CERPASS TECHNOLOGY CORP. Report No.: 25120476 CERPASS TECHNOLOGY CORP. Issued date : Jan. 16, 2026 Page No. : 6 of 7 11) EUT Photo 12) EUT Photo CERPASS TECHNOLOGY CORP. Report No.: 25120476 CERPASS TECHNOLOGY CORP. Issued date : Jan. 16, 2026 Page No. : 7 of 7 13) EUT Photo

CERPASS TECHNOLOGY CORP. Report No.: 25120476-TRDFCC05 Cerpass Technology Corp. Issued date : Jan. 16, 2026 T-FD-523-0 V1.1 Page No. : 1 of 10 FCC ID : 2A2TG-LXDB4I Radio Frequency Exposure Applicant : LT Security Inc Address : 17333 Freedom Way,City of Industry,California,United States,91748 Equipment : WIFI doorbell Model No. : LXDB4I-WIFI Trade Name : N/A FCC ID : 2A2TG-LXDB4I I HEREBY CERTIFY THAT: The sample was received Dec. 25, 2025 and the testing was completed on Jan. 10, 2026 at Cerpass Technology Corp. The test result refers exclusively to the test presented test model / sample. Without written approval of Cerpass Technology Corp., the test report shall not be reproduced except in full. Approved by: Mark Liao / Supervisor Laboratory Accreditation: Cerpass Technology Corporation Test Laboratory CERPASS TECHNOLOGY CORP. Report No.: 25120476-TRDFCC05 Cerpass Technology Corp. Issued date : Jan. 16, 2026 T-FD-523-0 V1.1 Page No. : 2 of 10 FCC ID : 2A2TG-LXDB4I Contents 1. Summary of Test Procedure and Test Results ........................................................................................ 4 1.1 Applicable Standards ................................................................................................................................ 4 2. Test Configuration of Equipment under Test ........................................................................................... 5 2.1 Feature of Equipment ............................................................................................................................... 5 2.2 General Information of Test ....................................................................................................................... 6 2.3 Measurement Uncertainty ......................................................................................................................... 7 3. Test Equipment and Ancillaries Used for Tests ....................................................................................... 8 4. Radio Frequency Exposure ....................................................................................................................... 9 CERPASS TECHNOLOGY CORP. Report No.: 25120476-TRDFCC05 Cerpass Technology Corp. Issued date : Jan. 16, 2026 T-FD-523-0 V1.1 Page No. : 3 of 10 FCC ID : 2A2TG-LXDB4I History of this test report Report No Issued Date Description 25120476-TRDFCC05 Jan. 16, 2026 Initial Issue CERPASS TECHNOLOGY CORP. Report No.: 25120476-TRDFCC05 Cerpass Technology Corp. Issued date : Jan. 16, 2026 T-FD-523-0 V1.1 Page No. : 4 of 10 FCC ID : 2A2TG-LXDB4I 1. Summary of Test Procedure and Test Results 1.1 Applicable Standards FCC Rules and Regulations Part 2.1091 FCC Rule . Description of Test Result 2.1091 . Radio Frequency Exposure PASS *The lab has reduced the uncertainty risk factor from test equipment, environment and staff technicians which according to the standard on contract. Therefore, the test result will only be determined by standard requirement, measurement uncertainty evaluation is not considered. CERPASS TECHNOLOGY CORP. Report No.: 25120476-TRDFCC05 Cerpass Technology Corp. Issued date : Jan. 16, 2026 T-FD-523-0 V1.1 Page No. : 5 of 10 FCC ID : 2A2TG-LXDB4I 2. Test Configuration of Equipment under Test 2.1 Feature of Equipment Equipment WIFI doorbell Model Name LXDB4I-WIFI Model Discrepancy N/A Frequency Range BLE/ WIFI 2.4G: 2400MHz-2483.5MHz WIFI 5G: 5150MHz-5250MHz, 5250MHz-5350MHz, 5470MHz -5725MHz, 5725MHz -5850MHz Modulation Type BLE: GFSK 2.4GHz 802.11b: CCK, DQPSK, DBPSK 802.11g/n: BPSK, QPSK, 16QAM, 64QAM 802.11ax: BPSK, QPSK, 16QAM, 64QAM, 256QAM, 1024QAM 5GHz 802.11a/n: BPSK, QPSK, 16QAM, 64QAM 802.11ac: BPSK, QPSK, 16QAM, 64QAM, 256QAM 802.11ax: BPSK, QPSK, 16QAM, 64QAM, 256QAM, 1024QAM Data Rate BLE: GFSK: 1Mbps, 2Mbps, 125kbps, 500kbps WIFI 2.4GHz: 802.11b: 1, 2 ,5.5,11Mbps 802.11g: 6,9,12,18,24,36,48,54Mbps 802.11n: MCS0-MCS7, HT20 802.11ax: MCS0-MCS11, HE20 WIFI 5GHz: 802.11a: 6,9,12,18,24,36,48,54Mbps 802.11n: MCS0-MCS7, HT20/HT40 802.11ac: MCS0-MCS9, VHT20/40 802.11ax: MCS0-MCS11, HE20/HE40 Working Temperature -25°C to 55°C EUT Power Rating: 10-24 VDC/14-24 VAC, 1.0 A; 5V/DC 2A Note: 1. EUT support Client mode without radar detection. 2. The EUT not support TPC 3. 802.11ax only support full RU. 4. For more details, please refer to the User’s manual of the EUT. CERPASS TECHNOLOGY CORP. Report No.: 25120476-TRDFCC05 Cerpass Technology Corp. Issued date : Jan. 16, 2026 T-FD-523-0 V1.1 Page No. : 6 of 10 FCC ID : 2A2TG-LXDB4I 2.2 General Information of Test Organization Cerpass Technology Corp. Test Site Cerpass Technology Corporation Test Laboratory Address: No.10, Ln. 2, Lianfu St., Luzhu Dist., Taoyuan City 33848, Taiwan (R.O.C.) Tel:+886-3-3226-888 Fax:+886-3-3226-881 FCC TW1439, TW1079 IC 4934E-1, 4934E-2 Frequency Range Investigated: Conducted: from 150kHz to 30 MHz Radiation: from 9kHz to 25,000MHz Test Distance: The test distance of radiated emission from antenna to EUT is 3 M. CERPASS TECHNOLOGY CORP. Report No.: 25120476-TRDFCC05 Cerpass Technology Corp. Issued date : Jan. 16, 2026 T-FD-523-0 V1.1 Page No. : 7 of 10 FCC ID : 2A2TG-LXDB4I 2.3 Measurement Uncertainty ISO/IEC 17025 requires that an estimate of the measurement uncertainties associated with the emissions test results be included in the report. The measurement uncertainties given below are based on a 95% confidence level (based on a coverage factor (k=2). Measurement Item Uncertainty AC Power Line Conduction(150kHz~30MHz) ±3.2dB Radiated Spurious Emission(9kHz~30MHz) ±3.4dB Radiated Spurious Emission(30MHz~1GHz) ±5.2dB Radiated Spurious Emission(1GHz~25GHz) ±5.2dB Conducted Spurious Emission ±2.1dB 6dB Bandwidth ±4.4% 20dB Bandwidth ±4.5% Occupied Bandwidth ±4.4% Peak Output Power(Conducted Power Meter) ±1.1dB Dwell Time / Deactivation Time ±3.5% Power Spectral Density ±2.0dB Duty Cycle ±3.5% CERPASS TECHNOLOGY CORP. Report No.: 25120476-TRDFCC05 Cerpass Technology Corp. Issued …

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Specification ➢ Antenna technical parameters Model Ex：2H131Z-41 Type EX：WIFI Frequency range EX：2400-2500M；5150-5180M Materials Ex： Metal VSWR EX：≤1.5@2400-2500M ≤1.4@5150-5180M Efficiency EX：≥33%@2400-2500M ≥23%@5150-5180M Gain (dBi) EX：≤3.50dBi@2400-2500M ≤3.25dBi@5150-5180M Termination Ex：/ Termination attribute Ex：/ Antenna size Ex: 17*11.5*7.8mm Working temperature Ex：-40~85°C Storage temperature Ex：22~55°C Capacity Ex：/ IP rate Ex：/ Characteristic impedance EX: 50Ω Withstand voltage EX:500V Radiation direction EX: Horizontal/Vertical Address: No.358 Liuyuan RD. Baoshan Urban Industrial District. Shanghai, PRC Tel: +86-21-6627 6925(26/29/35)- 601 Fax: +86-21-6627 6923 ➢ Product 2D drawing ➢ Testing result and graphics H E1 E2 ➢ Efficiency Frequency(MHz) Gain (dBi) Efficiency (%) 2400 1.63 33.65 2420 1.74 35.28 2440 3.18 43.67 2450 3.21 45.34 2460 2.75 41.77 2480 3.45 46.48 2500 3.50 47.13 5150 2.13 45.21 5250 1.99 33.43 5350 1.94 36.05 5470 3.25 46.01 5570 1.66 31.24 5670 2.38 26.84 5750 2.50 28.94 5850 1.95 23.74 ➢ Data(Active) ➢ Impedance matching requirements Parallel connection with a 0.75pF capacitor

CERPASS TECHNOLOGY CORP. Report No.: 25120476-TRDFCC02 Cerpass Technology Corp. Issued date : Jan. 16, 2026 T-FD-509-0 Ver 1.7 Page No. : 1 of 61 FCC ID. : 2A2TG-LXDB4I FCC RADIO TEST REPORT Applicant : LT Security Inc Address : 17333 Freedom Way,City of Industry,California,United States,91748 Equipment : WIFI doorbell Model No. : LXDB4I-WIFI Trade Name : N/A FCC ID : 2A2TG-LXDB4I I HEREBY CERTIFY THAT : The sample was received on Dec. 25, 2025 and the testing was completed on Jan. 15, 2026 at Cerpass Technology Corp. The test result refers exclusively to the test presented test model / sample. Without written approval of Cerpass Technology Corp., the test report shall not be reproduced except in full. Approved by: Mark Liao / Supervisor Laboratory Accreditation: Cerpass Technology Corporation Test Laboratory CERPASS TECHNOLOGY CORP. Report No.: 25120476-TRDFCC02 Cerpass Technology Corp. Issued date : Jan. 16, 2026 T-FD-509-0 Ver 1.7 Page No. : 2 of 61 FCC ID. : 2A2TG-LXDB4I Contents 1. Summary of Test Procedure and Test Results ................................................................................ 5 1.1 Applicable Standards ................................................................................................................. 5 2. Test Configuration of Equipment under Test ................................................................................... 6 2.1 Feature of Equipment ................................................................................................................. 6 2.2 Carrier Frequency of Channels .................................................................................................. 7 2.3 Test Mode and Test Software ..................................................................................................... 8 2.4 Description of Test System ......................................................................................................... 9 2.5 General Information of Test ...................................................................................................... 10 2.6 Measurement Uncertainty ........................................................................................................ 11 3. Test Equipment and Ancillaries Used for Tests ............................................................................. 12 4. Antenna Requirements ..................................................................................................................... 13 4.1 Antenna Construction and Directional Gain ............................................................................. 13 5. Test of AC Power Line Conducted Emission ................................................................................. 14 5.1 Test Limit .................................................................................................................................. 14 5.2 Test Procedures ....................................................................................................................... 14 5.3 Typical Test Setup .................................................................................................................... 15 5.4 Test Result and Data ................................................................................................................ 16 5.5 Test Photographs ..................................................................................................................... 18 6. Test of Radiated Spurious Emission ............................................................................................... 19 6.1 Test Limit .................................................................................................................................. 19 6.2 Test Procedures ....................................................................................................................... 20 6.3 Typical Test Setup .................................................................................................................... 21 6.4 Test Result and Data (9KHz ~ 30MHz) .................................................................................... 22 6.5 Test Result and Data (30MHz ~ 1GHz) ................................................................................... 22 6.6 Test Result and Data (1GHz ~ 25GHz) .................................................................................... 24 6.7 Restricted Bands of Operation ................................................................................................. 42 6.8 Test Photographs (30MHz ~ 1GHz) ......................................................................................... 43 6.9 Test Photographs (1GHz ~ 25GHz) ......................................................................................... 44 7. Test of Conducted Spurious Emission ........................................................................................... 46 7.1 Test Limit .................................................................................................................................. 46 7.2 Test Procedure ......................................................................................................................... 46 7.3 Test Setup Layout .................................................................................................................... 46 7.4 Test Result and Data ................................................................................................................ 46 8. On Time, Duty Cycle and Measurement methods ......................................................................... 50 8.1 Test Limit .................................................................................................................................. 50 8.2 Test Procedure ......................................................................................................................... 50 8.3 Test Setup Layout ............................…

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CERPASS TECHNOLOGY CORP. Report No.: 25120476-TRDFCC01 Cerpass Technology Corp. Issued Date : Jan. 16, 2026 T-FD-506-0 V1.8Page No. : 1 of 48 FCC ID : 2A2TG-LXDB4I FCC RADIO TEST REPORT Applicant : LT Security Inc Address : 17333 Freedom Way,City of Industry,California,United States,91748 Equipment : WIFI doorbell Model No. : LXDB4I-WIFI Trade Name : N/A FCC ID : 2A2TG-LXDB4I I HEREBY CERTIFY THAT: The sample was received on Dec. 25, 2025 and the testing was completed on Jan. 15, 2026 at Cerpass Technology Corp. The test result refers exclusively to the test presented test model / sample. Without written approval of Cerpass Technology Corp., the test report shall not be reproduced except in full. Approved by: Mark Liao / Supervisor Laboratory Accreditation: Cerpass Technology Corporation Test Laboratory CERPASS TECHNOLOGY CORP. Report No.: 25120476-TRDFCC01 Cerpass Technology Corp. Issued Date : Jan. 16, 2026 T-FD-506-0 V1.8 Page No. : 2 of 48 FCC ID : 2A2TG-LXDB4I Contents 1. Summary of Test Procedure and Test Results ................................................................................ 5 1.1 Applicable Standards ................................................................................................................. 5 2. Test Configuration of Equipment under Test ................................................................................... 6 2.1 Feature of Equipment ................................................................................................................. 6 2.2 Carrier Frequency of Channels .................................................................................................. 7 2.3 Test Mode and Test Software ..................................................................................................... 8 2.4 Description of Test System ......................................................................................................... 9 2.5 General Information of Test ...................................................................................................... 10 2.6 Measurement Uncertainty ........................................................................................................ 10 3. Test Equipment and Ancillaries Used for Tests ............................................................................. 11 4. Antenna Requirements ..................................................................................................................... 12 4.1 Standard Applicable ................................................................................................................. 12 4.2 Antenna Construction and Directional Gain ............................................................................. 12 5. Test of Conducted Emission ............................................................................................................ 13 5.1 Test Limit .................................................................................................................................. 13 5.2 Test Procedures ....................................................................................................................... 13 5.3 Typical Test Setup .................................................................................................................... 14 5.4 Test Result and Data ................................................................................................................ 15 5.5 Test Photographs ..................................................................................................................... 17 6. Test of Spurious Emission (Radiated) ............................................................................................ 18 6.1 Test Limit .................................................................................................................................. 18 6.2 Test Procedures ....................................................................................................................... 19 6.3 Typical Test Setup .................................................................................................................... 20 6.4 Test Result and Data (9kHz ~ 30MHz) .................................................................................... 21 6.5 Test Result and Data (30MHz ~ 1GHz) ................................................................................... 21 6.6 Test Result and Data (1GHz ~ 25GHz) ............…

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