2A55M90041Smart Doorbell

21 - + - + - + 343 Version 1.0 RL-AFH Easy setup. Battery powered. IP55 rating. 60º view angle. 850nm infrared light. 2.4GHz Wi-Fi connection, low power consumption. Visitor call push message. Simplex communication for video intercom. Snapshot and video recording. Low battery notification. Support 433MHz wireless door chime (receiver). 1.15~1.4m 1. Push Message Your smart phone will receive a push message when the visitor presses the call button. Tap on the message to enter the video intercom page. 2. Video Intercom On the video intercom page, tap and hold “Hold to Talk” button to talk with the visitor. To listen the doorbell, you should enable the speaker. 3. Share the Device Enter the real-time monitoring page, tap Settings (at the upper right corner) >> Share Device >> Add >>Input the registered account that you want to share with. 4. Low Battery Notification Your smart phone will receive a push message when battery level is low. Please replace the batteries in this case. 5. Notification Settings of Your Smart Phone For your smart phone, go to Settings >> Notification & Status Bar >> App Notifications >> Tuya Smart App >> Slide on the options including Show Notifications, Floating Notifications, Lock Screen Notifications, Sound, and so on (NOTE: These options may vary slightly depending on the model of your smart phone). 6. Reset the Device Open the back cover, use a needle to press the reset button for 3 seconds, when hearing a “Ding- Dong” tone, the reset is successful. 7. Doorbell Indicator Light - Blinking: Waiting for network pairing. - Steady ON: Working - Steady OFF: Sleeping Function Description ! Alkaline batteries are recommended. Do not mix old and new batteries Do not mix alkaline, standard (carbon- zinc), or rechargeable (ni-cad, ni-mh, etc.) batteries Smart Doorbell USER MANUAL Features Method 1: Peel & StickMethod 2: Screw Mount 1. Open the back cover and then install batteries. 2. Install the back plate. Support Peel & Stick and Screw Mount. Doorbell 1* What's Included Chime 1* Screw Pack1 * 3M Adhesive *1 Installation Push hard for 30s to secure the adhesive 3. Install the doorbell. Attach the doorbell onto the back plate. Secure with screw. 4. Install the doorbell 1.15m - 1.4m above the ground for the best photos. Function Keys Camera Light-dependent resistor (LDR) RESET Microphone Indicator light Call button Doorbell Chime Trim *1 Pull off the trim.Loosen the screw at the bottom. Insert the trim. Speaker LED indicator Rotatable USB power port Volume/Uncode Previous/Mode Next/Code 56 7 8 Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user ’s authority to operate the equipment. This device complies with Part 15 of the F C C 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. Shielded cables must be used with this unit to ensure compliance with the Class B F C C limits. N O T E : This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the F C C Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment 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/ T V technician for help. To maintain compliance with FCC’s RF Exposure guidelines, This equipment should be installed and operated with minimum distance between 20cm the radiator your body: Use only the supplied antenna. 2. Register your Tuya account and log in. 3. Enable “Bluetooth” and “Location” features of your smart phone. 4. Press the call button of the doorbell, the indicator light will blink and the the doorbell will enter into the network pairing mode. 5. Open the app, on the home page tap “ + ” at the upper right corner, app will automatically find the device. Once discovered, tap “Add”. 6. Input the account name and password of your 2.4 G H z Wi-Fi network, and then follow the on- screen instructions to complete. Battery: D C 4.5V A A / L R 6*3 Standby Current: 17μA Wireless Frequency: 2.4 G H z + 433 M H z Wireless Distance: ≈80m(Open area) Camera Viewing Angle: 60° Camera Pixel: 0.3 M P Talk Volume: ≈80db I P Rating: I P 55 Operating Temperature: -10°C~50°C Relative Humidity: 10%~90%( R H ) Outline Size: 136.3*54.3*29mm The doorbell only supports 2.4 G H z Wi-Fi. It does not support 5 G H z Wi-Fi. Metal can cause weak Wi-Fi signal, therefore, keep the doorbell away from the metal. The doorbell must not be directly exposed to sunlight. The image quality may be interfered by strong electromagnetic signals, therefore, when using the product, avoid the electromagnetic sources such as motor and transformer and make sure the circumstance is barrier-free and no interference. Do not attempt to repair this product, please return to your retailer. Remove batteries if the product is not in use for a long time and dispose the batteries according to the local laws and regulations. Use a slightly damp soft cloth to clean the camera . Coding between Doorbell and Chime Coding Hold “ ” button on …

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Sound Gallery 2024.03.20 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: 2A55M90041 Sound Gallery 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. Sincerely, Applicant signature: Applicant printed name: Isaac Saideh / CEO Sound Gallery 2024.03.20 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: 2A55M90041 Sound Gallery 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: Isaac Saideh / CEO

Sound Gallery 2024.03.20 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Smart Doorbell MODEL: 90041, RL-AFH Trademark: 、LUMO FCC ID: 2A55M90041 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 - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. 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. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title: Isaac Saideh / CEO Contact information / address: 110 W 34th St 7th Floor New York, NY 10001

Sound Gallery 2024.03.20 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd 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, Client’s signature: Client’s name / title: Isaac Saideh / CEO Contact information / address: 110 W 34th St 7th Floor New York, NY 10001

Sound Gallery Model Difference 2024.03.20 EUT NAME: Smart Doorbell MODEL: 90041, RL-AFH Trademark: 、LUMO All the model are the same circuit and RF module, except model names. Regards Sincerely Client’s signature: Client’s name / title: Isaac Saideh / CEO Contact information / address: 110 W 34th St 7th Floor New York, NY 10001

External Photos

10*5mm Label Location FCC ID: 2A55M90041

Internal Photos 433M Antenna WIFI Antenna

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2A55M90041 Applied procedures / limit According to FCC §15.247(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for Occupational / Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 Where: S = power density P = power input to antenna 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, R=0.2m TEST RESULTS 433M Below 1GHz: dBm=dBuV/m-95.2-4.7 Modulation Channel Freq. (MHz) Output Power (dBuV/m) Output Power (dBm) Tune up Produce power ASK 433.92 77.44 -22.46 -22±1 Maximum peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW/ cm2) Result -21 0.00794 1 (0dBi) 0.000002 1 Pass For the Max simultaneous transmission MPE Conclusion: For the max Power Density(S)(mW/ cm2) : 0.003006＜1, the SAR testing is not required. Tune up Produce power Maximu m peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW/ cm2) Result 802.11 b 9±1 10 10 1.51 (1.79dBi) 0.003004 1 Pass Evaluation mode Power Density/Limit Sum of the MPE rate Limit Result 802.11 b 0.003004 0.003006 1 Pass 433M 0.000002

ShenzhenLejinradiofrequencytechnologyCo.,LTD LejinradiofrequencyProprietary&Confidential©2017LejinradiofrequencyCorporation.Allrightsreserved. Add：Rm301B,A4Bld,JunfengInnovationPark,Fuyong,BaoanDist,Shenzhen.Tel:0755-27780515Email:[email protected] SPECIFICATIONSFORAPPROVAL CustomerName: ProductName:2.4GHzAntenna ProductModel: PartNumber:LJW01-17091602-R0A WriteBy:Huxuwen IssuedDate:2021-04-08 CUSTOMER ENGINEERR&DDEPTBUSSINESSDEPTAPPROVAL LEJIN R&DDEPTENGINEERDEPTAPPROVAL REVMODIFIEDDESCRIPTIONDATEREMARK V1.0InitialDraftRelease2021/04/08 ShenzhenLejinradiofrequencytechnologyCo.,LTD LejinradiofrequencyProprietary&Confidential©2017LejinradiofrequencyCorporation.Allrightsreserved. Add：Rm301B,A4Bld,JunfengInnovationPark,Fuyong,BaoanDist,Shenzhen.Tel:0755-27780515Email:[email protected] Index 1.Cover ································ 1 2.Index································2 3.ProductSpecification ·························· 3 4.TestEquipment&Conditions·······················3 5.TestReport ······························ 4 6.ReliabilityTest····························5 7.Assembletype ···························· 6 8.ProductDrawing···························8 ShenzhenLejinradiofrequencytechnologyCo.,LTD Lejin radio frequencyProprietary& Confidential© 2017 Lejin radio frequencyCorporation.All rightsreserved. Add：Rm 301B,A4Bld,JunfengInnovationPark,Fuyong,Baoan Dist,Shenzhen.Tel:0755-27780515Email:[email protected] 3. ProductSpecification A.ElectricalCharacteristics Frequency2400MHz~2500 MHz VSWR<2.0 Efficiency>40% Impedance50Ohm PolarizationLinear Gain 1.79dBi B. Material& MechanicalCharacteristics Materialof RadiatorMetal Cable TypeN/A ConnectorTypeN/A Dimension19.0*3.50*3.75(H)mm C. Environmental OperationTemperature- 20 ̊C ~ + 70 ̊C StorageTemperature- 30 ̊C ~ + 85 ̊C Humidity40%~95% 4. Test Equipment& Conditions 1.NetworkAnalyzersAgilent8753D/5071C 2.HSPAand LTE protocoltest setR&S CMW500-PT 3.CommunicationsTest SetAgilent8960 4.3D ChamberTest System Chart1 Testtopology ShenzhenLejinradiofrequencytechnologyCo.,LTD LejinradiofrequencyProprietary&Confidential©2017LejinradiofrequencyCorporation.Allrightsreserved. Add：Rm301B,A4Bld,JunfengInnovationPark,Fuyong,BaoanDist,Shenzhen.Tel:0755-27780515Email:[email protected] 5.TestReport 5.1VoltageStandingWaveRatio(VSWR). Chart2VSWR 5.2Efficientandgain. Passive TestFor WIFI 2.4G Freq(MHz) 24002410242024302440245024602470248024902500 Effi(%) 42.6246.8451.4755.0753.5448.0651.8049.3844.2142.7740.64 Gain(dBi) 1.471.441.561.651.541.791.621.591.621.370.36 5.3Radiationpattern. ShenzhenLejinradiofrequencytechnologyCo.,LTD LejinradiofrequencyProprietary&Confidential©2017LejinradiofrequencyCorporation.Allrightsreserved. Add：Rm301B,A4Bld,JunfengInnovationPark,Fuyong,BaoanDist,Shenzhen.Tel:0755-27780515Email:[email protected] 6. ReliabilityTest TestItemTestconditionEquipmentSpecificationResult 1 LowTemp. Storage Test Temperature:-30 °C， Time:48hrs Testcondition:PlacingantennainaLow/High TemperatureChamber,keepthetempis25 °C and humidityis65%foronehour,thenstep-downthe temp.to-30 °C inonehour,storeantennafor44hours; step-uptempto25°C,testantennaafter2hours. Temp.&Hu mi. Tester Nomaterial deformationis allowed. Electronic Performanceis ok. PASS 2 High Temp./High Humid Storage Test Temperature:85°CHumidity:85%RHTime:48hrs Testcondition:PlacingantennainaLow/High TemperatureChamber,keepthetempis25°Cand humidityis65%foronehour,thenstep-upthetemp.to 80°Candthehumidityupto85%inonehour,store antennafor44hours;step-downtempto25 °C ,test antennaafter2hours. Temp.&Hu mi. Tester Nomaterial deformationis allowed. Electronic Performanceis ok. PASS 3 Salt-Spray 6prayTest PlacingantennaintheSalt-SprayTester,setthetest condition，Temp:35±2°CHumidity:85%NaClsalt spray:5±1%.PHvalue:6.5~7.2Testtime:24hours Salt-Spray Tester Nocolor change Noappear rusting PASS 7.Assembletype(omitted) 8.ProductDrawing

No.：BCTC/RF-EMC-005 Page: 1 of 74 Edition：B.1 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2312940774-1E Applicant: Sound Gallery Product Name: Smart Doorbell Test Model: 90041 Tested Date: 2024-01-01 to 2024-01-16 Issued Date: 2024-01-17 Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 2 of 74 Edition：B.1 FCC ID: 2A55M90041 The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: Smart Doorbell Trademark: 、LUMO Model/Type Reference: 90041 RL-AFH Prepared For: Sound Gallery Address: 110 W 34th St 7th Floor New York, NY 10001 Manufacturer: GUANGDONG ROULE ELECTRONICS CO., LTD Address: No. 12, Pingdong 3rd Road, Nanping Industry Community, Zhuhai Guangdong, China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China. Sample Received Date: 2023-12-29 Sample Tested Date: 2024-01-01 to 2024-01-16 Issue Date: 2024-01-17 Report No.: BCTC2312940774-1E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is WIFI-2.4GHz band radio test report. Tested by: Approved by: Eric Yang/Project Handler Zero Zhou/Reviewer Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 3 of 74 Edition：B.1 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 9 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List .......................................................................................................... 9 4.5 Test Mode ........................................................................................................... 10 4.6 Table Of Parameters Of Text Software Setting ................................................... 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 13 6.1 Block Diagram Of Test Setup .............................................................................. 13 6.2 Limit .................................................................................................................... 13 6.3 Test procedure .................................................................................................... 13 6.4 EUT operating Conditions ................................................................................... 13 6.5 Test Result .......................................................................................................... 13 7. Radiated Emissions ............................................................................................. 14 7.1 Block Diagram Of Test Setup .............................................................................. 14 7.2 Limit .................................................................................................................... 15 7.3 Test procedure .................................................................................................... 16 7.4 EUT Operating Conditions .................................................................................. 17 7.5 Test Result .......................................................................................................... 17 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 21 8.1 Block Diagram Of Test Setup .............................................................................. 21 8.2 Limit .................................................................................................................... 21 8.3 Test procedure .................................................................................................... 22 8.4 EUT Operating Conditions .................................................................................. 22 8.5 Test Result .......................................................................................................... 23 9. Power Spectral Density Test ............................................................................... 25 9.1 Block Diagram Of Test Setup .............................................................................. 25 9.2 Limit .................................................................................................................... 25 9.3 Test procedure .................................................................................................... 25 9.4 EUT Operating Conditions .................................................................................. 25 9.5 Test Result ................................................................................…

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Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 62 of 74 Edition：B.1 Tx. Spurious NVNT n40 2437MHz Ref Tx. Spurious NVNT n40 2437MHz Emission Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 63 of 74 Edition：B.1 Tx. Spurious NVNT n40 2452MHz Ref Tx. Spurious NVNT n40 2452MHz Emission Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 64 of 74 Edition：B.1 13. Duty Cycle Of Test Signal 13.1 Standard Requirement Pre-analysis Check: While conducting average power measurement, duty cycle of each mode shall be checked to ensure its duty cycle in order to compensate for the loss due to insufficient ratio of duty cycle. All duty cycle is pre-scanned, and result as obtained below shows only the most representative ones where duty cycle is conducted as the given transmission with given virtual operation that expresses the percentage. 13.2 Formula Duty Cycle = Ton / (Ton+Toff) 13.3 Test Procedure 1.Set span = Zero 2. RBW = 10MHz 3. VBW = 10MHz, 4. Detector = Peak 13.4 Test Result Test mode Duty Cycle(%) Duty Fator (dB) 1/T (kHz) 802.11b 100 0 0 100 0 0 100 0 0 802.11g 100 0 0 100 0 0 100 0 0 802.11n(HT20) 100 0 0 100 0 0 100 0 0 802.11n(HT40) 100 0 0 100 0 0 100 0 0 Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 65 of 74 Edition：B.1 Test Graphs Duty Cycle NVNT b 2412MHz Duty Cycle NVNT b 2437MHz Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 66 of 74 Edition：B.1 Duty Cycle NVNT b 2462MHz Duty Cycle NVNT g 2412MHz Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 67 of 74 Edition：B.1 Duty Cycle NVNT g 2437MHz Duty Cycle NVNT g 2462MHz Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 68 of 74 Edition：B.1 Duty Cycle NVNT n20 2412MHz Duty Cycle NVNT n20 2437MHz Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 69 of 74 Edition：B.1 Duty Cycle NVNT n20 2462MHz Duty Cycle NVNT n40 2422MHz Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 70 of 74 Edition：B.1 Duty Cycle NVNT n40 2437MHz Duty Cycle NVNT n40 2452MHz Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 71 of 74 Edition：B.1 14. Antenna Requirement 14.1 Limit 15.203 requirement: For intentional device, according to 15.203: an intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. 14.1 Test Result The EUT antenna is permanent welding metal antenna, fulfill the requirement of this section. Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 72 of 74 Edition：B.1 15. EUT Photographs EUT Photo 1 EUT Photo 2 NOTE: Appendix-Photographs Of EUT Constructional Details Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 73 of 74 Edition：B.1 16. EUT Test Setup Photographs Radiated Measurement Photos Report No.: BCTC2312940774-1E No.：BCTC/RF-EMC-005 Page: 74 of 74 Edition：B.1 STATEMENT 1. The equipment lists are traceable to the national reference standards. 2. The test report can not be partially copied unless prior written approval is issued from our lab. 3. The test report is invalid without the "special seal for inspection and testing". 4. The test report is invalid without the signature of the approver. 5. The test process and test result is only related to the Unit Under Test. 6. Sample information is provided by the client and the laboratory is not responsible for its authenticity. 7. The quality system of our laboratory is in accordance with ISO/IEC17025. 8. If there is any objection to this test report, the client should inform issuing laboratory within 15 days from the date of receiving test report. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China TEL: 400-788-9558 P. C.: 518103 FAX: 0755-33229357 Website: http://www.chnbctc.com E-Mail: [email protected] ※※※※※ END ※※※※※

Radiated Measurement Photos