2AZHH-RT81Remote control

RT81 Remote Control SIZE：70*39*13.1mm（3V*2） Technology Parameter: ⚫Working current: ≤12mA ⚫Transmitting frequency: 433.92M Common code: Rolling code ⚫Oscillation resistance：under your requests ⚫Frequency modulation：ASK ⚫Transmit distance: 50-100m ⚫Applications： Home alarm, car alarms, industrial control and other FCC Caution： 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. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Zhejiang Joytech Electronics Co.,Ltd 2024.09.04 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: 2AZHH-RT81 [Zhejiang Joytech Electronics Co.,Ltd] (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, (Applicant signature) (Applicant printed name) Louis mao Zhejiang Joytech Electronics Co.,Ltd 2024.09.04 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: 2AZHH-RT81 [Zhejiang Joytech Electronics Co.,Ltd] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, (Applicant signature) (Applicant printed name) Louis mao

Zhejiang Joytech Electronics Co.,Ltd 2024.09.04 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Remote control Trademark: N/A MODEL : RT81 FCC ID : 2AZHH-RT81 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 : Louis mao /Manager Contact information / address: NO.651 HENGXING ROAD, PUYUAN TOWN, TONGXIANG, ZHEJIANG, CHINA

Zhejiang Joytech Electronics Co.,Ltd 2024.09.04 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 : Louis mao /Manager Contact information / address: NO.651 HENGXING ROAD, PUYUAN TOWN, TONGXIANG, ZHEJIANG, CHINA

External Photos

Label & label location 10mm*20mm FCC ID: 2AZHH-RT81

Internal Photos Antenna

RF EXPOSURE EVALUATION METHOD FCC ID: 2AZHH-RT81 Applicable standard： In accordance with FCC 47 CFR part 2 (2.1093) this device has been defined as a portable device which is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user. Portable devices must be evaluated using the specified in FCC 47 CFR part 2 (2.1093) and ANSI/IEEEC95.1-1992. and had been tested in accordance with the measurement methods and procedures specified in IEEE 1528-2003. Per FCC KDB 447498 D01 v06, the 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances s 50 mm are determined by: SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR,where f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. Modulation Test Channel Output Power (dBuV/m) Output Power (dBm) ASK 433.92 64.72 -35.18 Below 1GHz: dBm=dBuV/m-95.2-4.7 max possible output power (PK,ERP)：-35dBm±1dBm 0dBi logarithmic terms convert to numeric result is nearly 1 -34dBm=0.0004mW 315MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 0.0004/5*√0.43392=0.00000053≤3.0 Conclusion: 1. [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] * [√f(GHz)] < 3.0. 2. SAR Test Exclusion Thresholds is 3.0 for separation distance 5mm. Therefore, SAR test is not required.

深圳市创遥科技有限公司 SHENZHEN C&Y TECHNOLOGY CO.,LTD 文件名称 产品名称 产品型号 图纸编号 生效日期 遥控器 YET2210A&C-4K HCS301 433.92M 20240822 备注：Antenna specification （天线规格） 钢网： 说明：遥控器采用PCB板载天线辐射功率，天线宽度1.６mm，0dBi增益，SWR＜2.0 制作 审核 核准

No.：BCTC/RF-EMC-005 Page: 1 of 31 Edition：B.2 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2407887981E Applicant: Zhejiang Joytech Electronics Co.,Ltd Product Name: Remote control Test Model: RT81 Tested Date: 2024-07-31 to 2024-08-21 Issued Date: 2024-08-21 Report No.: BCTC2407887981E No.：BCTC/RF-EMC-005 Page: 2 of 31 Edition：B.2 FCC ID:2AZHH-RT81 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: Remote control Trademark: N/A Model/Type reference: RT81 Prepared For: Zhejiang Joytech Electronics Co.,Ltd Address: NO.651 HENGXING ROAD, PUYUAN TOWN, TONGXIANG, ZHEJIANG, CHINA Manufacturer: Zhejiang Joytech Electronics Co.,Ltd Address: NO.651 HENGXING ROAD, PUYUAN TOWN, TONGXIANG, ZHEJIANG, 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: 2024-07-31 Sample tested Date: 2024-07-31 to 2024-08-21 Issue Date: 2024-08-21 Report No.: BCTC2407887981E Test Standards: FCC Part15.231 ANSI C63.10-2013 Test Results: PASS Tested by: Approved by: Tang Changyu/ Project Handler Zero Zhou/Reviewer Report No.: BCTC2407887981E No.：BCTC/RF-EMC-005 Page: 3 of 31 Edition：B.2 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 4 2. Test Summary ....................................................................................................... 5 3. Measurement Uncertainty ..................................................................................... 6 4. Product Information And Test Setup ..................................................................... 7 4.1 Product Information ............................................................................................... 7 4.2 Test Setup Configuration ...................................................................................... 7 4.3 Support Equipment ............................................................................................... 8 4.4 Channel List .......................................................................................................... 8 4.5 Test Mode ............................................................................................................. 8 5. Test Facility And Test Instrument Used ................................................................. 9 5.1 Test Facility ........................................................................................................... 9 5.2 Test Instrument Used ............................................................................................ 9 6. Conducted Emissions .......................................................................................... 11 6.1 Block Diagram Of Test Setup .............................................................................. 11 6.2 Limit .................................................................................................................... 11 6.3 Test Procedure ................................................................................................... 11 6.4 EUT Operating Conditions .................................................................................. 12 6.5 Test Result .......................................................................................................... 12 7. Radiated Emissions ............................................................................................. 13 7.1 Block Diagram Of Test Setup .............................................................................. 13 7.2 Limit .................................................................................................................... 14 7.3 Test Procedure ................................................................................................... 15 7.4 EUT Operating Conditions .................................................................................. 17 7.5 Test Result .......................................................................................................... 17 8. Bandwidth Test .................................................................................................... 21 8.1 Block Diagram Of Test Setup .............................................................................. 21 8.2 Limit .................................................................................................................... 21 8.3 Test Procedure ................................................................................................... 21 8.4 EUT Operating Conditions .................................................................................. 21 8.5 Test Result .......................................................................................................... 22 9. Calculation Of Average Factor ............................................................................ 23 10. Dwell Time........................................................................................................... 26 10.1 Block Diagram Of Test Setup ............................................................................ 26 10.2 Limit .................................................................................................................. 26 10.3 Test Procedure ................................................................................................. 26 10.4 Test Result ........................................................................................................ 27 11. Antenna Requirement ........................…

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13. EUT Test Setup Photographs Radiated Measurement Photos 1G