2A2QE-1556Smart Bridge

产品名称:智能网关 产品型号: AT1556 品类: 网关 通讯方式: Wi‐Fi、蓝牙Mesh(SIG) 额定输入:5V‐1A 工作温度: ‐0°C~50°°C 工作湿度:0%‐95%RH，无冷凝 支持系统:Android 5.0 或iOS12.0及以上版本 Product name: Smart Bridge Product Model: AT1556 Category: Gateway Communication mode: Wi‐Fi, Bluetooth Mesh(SIG) Rated input :5V‐1A Operating temperature: ‐0°C~50° C Working humidity :0%‐95%RH, no condensation Supported operating system :Android 5.0 or iOS12.0 or above 连接方式/Connection mode:： 1. 第一步将网关接通电源 1. Step 1 ,Plug in the smart bridge 第二步打开涂鸦智能APP 点击右上角“+”添加涂鸦智能网关。2. Step 2 ,Open the Tuya APP and press "+" in the upper right corner to add the smart bridge. 2. 第三步:添加成功后，根据APP提示绑定其他智能设备。3. Step 3: Through the smart birdge, add the other smart devices as prompted by the APP. FCC Warning This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio 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/TV technician for help. Note: The Grantee is not responsible for any changes or modifications not expressly approved by the party responsible for compliance. such modifications could void the user's authority to operate the equipment. The device has been evaluated to meet general RF exposure requirement. To maintain compliance with FCC's RF exposure guidelines, the distance must be at least 20 cm between the radiator and your body, and fully supported by the operating and installation

YuyaoYunjinElectricalApplianceCo.,Ltd Date: 2022-05-07 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC ID:2A2QE-1556 To Whom It May Concern: This letter is to statement thatAT1556/SmartBridge.has been tested according to FCC Part 15B byWaltekTestingGroupCo.,Ltd.(Test Report No.: WTD22D05086498E).And the SDOC file, meetting the requirements of the FCC regulations, would been provided whenthedeviceissoldby the responsible party in US. The service will not be sold until the SDOC is provided. If the sale does not have an SDOC, all responsibility isthe responsibility of the applicant. Sincerely, Signature [ChangRan Luo] [Engineer] [YuyaoYunjinElectricalApplianceCo.,Ltd]

Yuyao Yunjin Electrical Appliance Co., Ltd Date: May 07, 2022 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCCID:2A2QE-1556 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit TypeFile Name Schematics Block Diagram Operational Description Schematics.pdf Block Diagram.pdf Operational Description.pdf The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, YuyaoYunjinElectricalApplianceCo.,Ltd Signature ChangRan Luo / Engineer Typed name and Title

YuyaoYunjinElectricalApplianceCo.,Ltd FCC ID: 2A2QE-1556 POWER OF ATTORNEY Date: May 07, 2022 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: We, the undersigned, hereby authorize Waltek Testing Group Co., Ltd. (Philo Zhong) on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Waltek Testing Group Co., Ltd. (Philo Zhong) on our behalf shall have the same effect as acts of our own. This authorization expires onMay 06, 2023. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, Yuyao Yunjin Electrical Appliance Co., Ltd are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, YuyaoYunjinElectricalApplianceCo.,Ltd Signature ChangRan Luo / Engineer Typed name and Title

Appendix-AT1556-Photos 2. Photographs –Constructional Details 2.1. EUT – External View Model AT1556 FCC ID: 2A2QE-1556 Appendix-AT1556-Photos Appendix-AT1556-Photos Appendix-AT1556-Photos

A B C D A B C D A BB A D C B A D C A B BAD C BAD C BA BAD C BAD C BA

Appendix-AT1556-Photos 2.2. EUT – Internal View Model AT1556 FCC ID: 2A2QE-1556 Appendix-AT1556-Photos Appendix-AT1556-Photos Appendix-AT1556-Photos

Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Page 1 of 8 TEST REPORT Referen ce No. .................... : WTD22D05086518W003 FCC ID ................................ : 2A2QE-1556 Applicant ............................ : Yuyao Yunjin Electrical Appliance Co., Ltd Address .............................. : No.5 Gongji Road, Simen Town, Yuyao, Ningbo, Zhejiang, China Manufacturer .................... : Yuyao Yunjin Electrical Appliance Co., Ltd Address .............................. : No.5 Gongji Road, Simen Town, Yuyao, Ningbo, Zhejiang, China Product ............................... : Smart Bridge Model(s). ............................ : AT1556 Standards........................... : FCC 47CFR Part 2 Subpart J Section 2.1091 Date of Receipt sample .... : 2022-05-05 Date of Test ....................... : 2022-05-17 to 2022-06-22 Date of Issue ...................... : 2022-07-01 Test Result ......................... : Pass Remarks: The re sults shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By: Waltek Testing Group Co., Ltd. Address: No. 77, Houjie Section, Guantai Road, Houjie Town, Dongguan City, Guangdong, China Tel: +86-769-2267 6998 Fax: +86-769-2267 6828 Compiled by: Approved by: James Cheng / Project Engineer Daniel Liu / Designated Reviewer Reference No.: WTD22D05086518W003 Page 2 of 8 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 2. Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2. CONTENTS ............................................................................................................................................... 2 3. REVISION HISTORY ................................................................................................................................. 3 4. GENERAL INFORMATION ....................................................................................................................... 4 4.1. GENERAL DESCRIPTION OF E.U.T.................................................................................................... 4 4.2. DETAILS OF E.U.T. ......................................................................................................................... 4 4.3. TEST FACILITY ................................................................................................................................ 5 5. TEST SUMMARY ...................................................................................................................................... 6 6. RF EXPOSURE ......................................................................................................................................... 7 6.1. REQUIREMENTS .............................................................................................................................. 7 6.2. THE PROCEDURES / LIMIT ................................................................................................................ 7 6.3. MPE CALCULATION METHOD........................................................................................................... 8 6.4. RESULT: COMPLIANCE .................................................................................................................... 8 Reference No.: WTD22D05086518W003 Page 3 of 8 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 3. Revision History Test Report No. Date of Receipt Sample Date of Test Date of Issue Purpose CommentApproved WTD22D05086518W003 2022-05-05 2022-05-17 to 2022-06-22 2022-07-01Original - Valid Reference No.: WTD22D05086518W003 Page 4 of 8 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 4. General Information 4.1. General Description of E.U.T. Product: Smart Bridge Model(s): AT1556 Model difference: N/A Hardware Version: REV3.0 Software Version: 1.5.5 4.2. Details of E.U.T. BT Version: 4.2 Operation Frequency: 2.4G Wi-Fi: 802.11b/g/n HT20: 2412~2462MHz, 11 Channels in total 802.11n HT40: 2422~2452MHz, 7 Channels in total BLE: 2402-2480MHz, 40 Channels in total Max. RF output power: 2.4G Wi-Fi: 14.95 dBm BLE: 4.10dBm Modulation Technology: 2.4G Wi-Fi: DSSS, OFDM BLE: GFSK Antenna installation: PCB Antenna Antenna Gain: 1.88dBi Ratings: Input: 5V 1A Adapter: Manufacturer: Yuyao Yunjin Electrical Appliance Co., Ltd Model: AT1386 Input: 100-240V~ 50/60Hz 0.15A max Output: 5V 1A Reference No.: WTD22D05086518W003 Page 5 of 8 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 4.3. Test Facility The test facility has a test site registered with the following organizations: ISED CAB identifier: CN0013. Test Firm Registration No.: 7760A. Waltek Testing Group Co., Ltd. Has been registered and fully described in a report filed with the Industry Canada. The acceptance letter from the Industry Canada is maintained in our files. Registration number 7760A, October 15, 2016. FCC Designation No.: CN1201. Test Firm Registration No.: 523476. Waltek Testing Group Co., Ltd. EMC Laboratory has been registered and fully described in a report filed with the (FCC) Federal Communications Commission. The acceptance letter from the FCC is maintained in our files. Registration number 523476, September 10, 2019. 4.4. Subcontracted Whether parts of tests for the product have been subcontracted to other labs: Yes No If Yes, list the related test items and lab information: Test Lab: N/A Lab address: N/A Test items: N/A 4.5. Abnormalities from Standard Conditions None. Reference No.: WTD22D05086518W003 Page 6 of 8 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 5. Test Summary Test Items Test Requirement Result Maximum Permissible Exposure (Exposure of Humans to RF Fields) FCC Part 2.1091 PASS Reference No.: WTD22D050…

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Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Page 1 of 54 TEST REPORT Referen ce No. .................... : WTD22D05086518W001 FCC ID ................................ : 2A2QE-1556 Applicant ............................ : Yuyao Yunjin Electrical Appliance Co., Ltd Address .............................. : No.5 Gongji Road, Simen Town, Yuyao, Ningbo, Zhejiang, China Manufacturer .................... : Yuyao Yunjin Electrical Appliance Co., Ltd Address .............................. : No.5 Gongji Road, Simen Town, Yuyao, Ningbo, Zhejiang, China Product ............................... : Smart Bridge Model(s). ............................ : AT1556 Standards........................... : FCC 47CFR Part 15.247 Date of Receipt sample .... : 2022-05-05 Date of Test ....................... : 2022-05-17 to 2022-06-22 Date of Issue ...................... : 2022-07-01 Test Result ......................... : Pass Remarks: The re sults shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By: Waltek Testing Group Co., Ltd. Address: No. 77, Houjie Section, Guantai Road, Houjie Town, Dongguan City, Guangdong, China Tel: +86-769-2267 6998 Fax: +86-769-2267 6828 Compiled by: Approved by: James Cheng / Project Engineer Daniel Liu / Designated Reviewer Reference No.: WTD22D05086518W001 Page 2 of 54 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 2 Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2 CONTENTS ............................................................................................................................................... 2 3 REVISION HISTORY ................................................................................................................................. 4 4 GENERAL INFORMATION ....................................................................................................................... 5 4.1 GENERAL DESCRIPTION OF E.U.T. ....................................................................................................... 5 4.2 DETAILS OF E.U.T. .............................................................................................................................. 5 4.3 CHANNEL LIST ..................................................................................................................................... 5 4.4 TEST FACILITY .................................................................................................................................... 5 4.5 SUBCONTRACTED ................................................................................................................................ 6 4.6 ABNORMALITIES FROM STANDARD CONDITIONS .................................................................................... 6 4.7 TEST MODE ........................................................................................................................................ 7 5 TEST SUMMARY ...................................................................................................................................... 8 6 EQUIPMENT USED DURING TEST ......................................................................................................... 9 6.1 EQUIPMENTS LIST ............................................................................................................................... 9 6.2 DESCRIPTION OF SUPPORT UNITS ........................................................................................................ 9 6.3 MEASUREMENT UNCERTAINTY ........................................................................................................... 10 6.4 TEST EQUIPMENT CALIBRATION ......................................................................................................... 10 7 DUTY CYCLE .......................................................................................................................................... 11 8 CONDUCTED EMISSION ....................................................................................................................... 13 8.1 E.U.T. OPERATION ............................................................................................................................ 13 8.2 EUT SETUP ...................................................................................................................................... 13 8.3 MEASUREMENT DESCRIPTION ............................................................................................................ 13 8.4 CONDUCTED EMISSION TEST RESULT ................................................................................................ 14 9 RADIATED EMISSIONS ......................................................................................................................... 16 9.1 EUT OPERATION ............................................................................................................................... 16 9.2 TEST SETUP ..................................................................................................................................... 17 9.3 SPECTRUM ANALYZER SETUP ............................................................................................................ 18 9.4 TEST PROCEDURE ............................................................................................................................. 19 9.5 CORRECTED AMPLITUDE & MARGIN CALCULATION .............................................................................. 19 9.6 SUMMARY OF TEST RESULTS ............................................................................................................. 20 10 CONDUCTED …

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Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Page 1 of 34 TEST REPORT Referen ce No. .................... : WTD22D05086518W002 FCC ID ................................ : 2A2QE-1556 Applicant ............................ : Yuyao Yunjin Electrical Appliance Co., Ltd Address .............................. : No.5 Gongji Road, Simen Town, Yuyao, Ningbo, Zhejiang, China Manufacturer .................... : Yuyao Yunjin Electrical Appliance Co., Ltd Address .............................. : No.5 Gongji Road, Simen Town, Yuyao, Ningbo, Zhejiang, China Product ............................... : Smart Bridge Model(s). ............................ : AT1556 Standards........................... : FCC 47CFR Part 15.247 Date of Receipt sample .... : 2022-05-05 Date of Test ....................... : 2022-05-17 to 2022-06-22 Date of Issue ...................... : 2022-07-01 Test Result ......................... : Pass Remarks: The re sults shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By: Waltek Testing Group Co., Ltd. Address: No. 77, Houjie Section, Guantai Road, Houjie Town, Dongguan City, Guangdong, China Tel: +86-769-2267 6998 Fax: +86-769-2267 6828 Compiled by: Approved by: James Cheng / Project Engineer Daniel Liu / Designated Reviewer Reference No.: WTD22D05086518W002 Page 2 of 34 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 2 Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2 CONTENTS ............................................................................................................................................... 2 3 REVISION HISTORY ................................................................................................................................. 4 4 GENERAL INFORMATION ....................................................................................................................... 5 4.1 General Description of E.U.T. ....................................................................................................... 5 4.2 Details of E.U.T. ............................................................................................................................ 5 4.3 Channel List .................................................................................................................................. 5 4.4 Test Facility ................................................................................................................................... 6 4.5 Subcontracted ............................................................................................................................... 6 4.6 Abnormalities from Standard Conditions ...................................................................................... 6 4.7 Test Mode ..................................................................................................................................... 6 5 TEST SUMMARY ...................................................................................................................................... 7 6 EQUIPMENT USED DURING TEST ......................................................................................................... 8 6.1 Equipments List ............................................................................................................................ 8 6.2 Description of Support Units ......................................................................................................... 8 6.3 Measurement Uncertainty ............................................................................................................ 9 6.4 Test Equipment Calibration .......................................................................................................... 9 7 DUTY CYCLE .......................................................................................................................................... 10 8 CONDUCTED EMISSION ....................................................................................................................... 11 8.1 E.U.T. Operation ......................................................................................................................... 11 8.2 EUT Setup .................................................................................................................................. 11 8.3 Measurement Description ........................................................................................................... 11 8.4 Conducted Emission Test Result ............................................................................................... 12 9 RADIATED EMISSIONS ......................................................................................................................... 14 9.1 EUT Operation ............................................................................................................................ 14 9.2 Test Setup .................................................................................................................................. 15 9.3 Spectrum Analyzer Setup ........................................................................................................... 16 9.4 Test Procedure ........................................................................................................................... 17 9.5 Corrected Amplitude & Margin Calculation ................................................................................ 17 9.6 Summary of Test Results ........................................................................................................... 18 10 CONDUCTED SPURIOUS EMISSIONS .........…

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Appendix-AT1556-Photos 1. Test Setup photos Model AT1556 FCC ID: 2A2QE-1556 1.1 Photograph –Conducted Emission Test Site 1# 1.2 Photograph – Radiated Emissions For 9KHz-30MHz Test Site 2# Appendix-AT1556-Photos For 30MHz-1000MHz Test Site 2# For Above 1GHz Test Site 1#