YI6-RL22TXWireless doorbell (transmitter)

MODEL: RL-3883(22TX) MODEL: RL-3883B(22TX) MODEL: RL-2R3883(22TX) 60 ringtones. 4 levels for volume adjustment. Adopt learning code technology to effectively avoid interference. Each remote control can be set to a unique ringtone. Wireless Remote Control Doorbell USER MANUAL Version 1.0 NOTICE: This manual is for the purpose of product use and operation. Design and specifications are subject to change without notice. 1. Risk of explosion if the battery is replaced by an incorrect type; 2. Disposal of a battery into fire or a hot oven, or mechanically crushing or cutting of a battery, that can result in an explosion; 3. Leaving a battery in an extremely high temperature surrounding environment that can result in an explosion or the leakage of flammable liquid or gas; 4. A battery subjected to extremely low air pressure that may result in an explosion or the leakage of flammable liquid or gas. 5. Do not ingest battery, Chemical Burn Hazard. 6. Keep new and used batteries away from children. If the battery compartment does not close securely, stop using the product and keep it away from children. If you think batteries might have been swallowed or placed inside any part of the body, seek immediate medical attention. CAUTION 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. 12 1. Mode Selection: Press on the side of the receiver to select among 3 modes, i.e., “ ” Light Flashing Only, Ringtone Only, Ringtone with Light Flashing. 2. Ringtone Selection: Press once on the side of the receiver to select the next “ ” ringtone while press twice to select the previous ringtone. There are 60 ringtones in “ ” total for selection. 3. Volume Adjustment: Press “ ” on the side of the receiver to adjust the volume. Low/Medium/High/Max.。 4. Pairing: First select the ringtone. Then long press “ ” on the side of the receiver for over 3 seconds, it will sound “Ding-Dong” to indicate that it has entered into the pairing state. Now, press the Push button on the remote control, when the receiver sounds the ringtone selected, the pairing is successful (Follow the instruction to pair one remote control to the receiver. To pair more, repeat the instruction. Max 20 remote controls can be paired to one receiver and each remote control can be set to a unique ringtone.). 5. Clearing Code: Long press “ ” on the side of the receiver for over 5 seconds, it will sound “Ding-Dong, Ding-Dong” to indicate that clearing code is successful (This action will clear the code for all remote controls). Power Indicator: 6.Each time the receiver is powered on, it will sound “Ding-Dong” to indicate that connecting to power supply works well. 7. Indicator Light: When the receiver plays a ringtone, the indicator on its front will flash in accordance with the ringtone. When pressing the Push button on the remote control, the indicator light on the remote control will be on. 1. Do not mix old and new batteries 2. It is recommended to use alkaline batteries for the Remote Control. 3. Do not mix alkaline, standard (carbon-zinc), or rechargeable (ni-cad, ni-mh, etc.) batteries 4. Dispose of used batteries in accordance with applicable local laws and regulations. Note: In addition to the 3M adhesive, you may choose screw installation. For screw installation，
first secure the back cover to the wall, then attach the front cover, finally tighten the screws. Battery: DC 3V (AAA*2) <2μAStandby Current: <40mAWorking Current: Modulation OOK: 433.92MHz Frequency: 2sTransmitting Time:/transmission Working Temperature: -15°C~50°C Use Environment: Indoor or Outdoor IPX5IP Rating: ① Remote Control ② Receiver FUNCTION KEYS Push button IndicatorIndicator Name plate INSTRUCTIONS Volume Adjustment /Clear Code 3 Do not install the remote control on any metal objects, which can seriously cause interrupted transmission. Mode Selection Ringtone Selection/Pair PACKAGE CONTENTS RL-3883(22TX): Receiver×1, Remote Control×1, 3M sticker×1 RL-3883B(22TX): Receiver×1, Remote Control×2, 3M sticker×2 RL-2R3883(22TX): Receiver×2, Remote Control×1, 3M sticker×1 NOTE: TECHNICAL SPECIFICATIONS ① Remote Control ② Receiver Low: 58-68dB Medium: 68-73dB High: 73-78dB Max: 78-88dB Volume (30cm) Distance: ≈40 (Open Area)0m Working Temperature: -10°C~50°C Use Environment: Indoor Power: AC 100~240V 50/60Hz Standby power consumption: 0.5W Working power consumption: 2 W PREPARATION BEFORE USE Remote Control …

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(GUANGDONG ROULE ELECTRONICS CO., LTD) (2026.01.27) 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:YI6-RL22TX) [GUANGDONG ROULE 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. 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) Huahao Zhang (GUANGDONG ROULE ELECTRONICS CO., LTD) (2026.01.27) 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:YI6-RL22TX) [GUANGDONG ROULE 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) Huahao Zhang

GUANGDONG ROULE ELECTRONICS CO., LTD 2026.01.27 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Wireless doorbell (transmitter) MODEL : RL-22TX FCC ID : YI6-RL22TX 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 : Huahao Zhang/Manager Contact information / address: No. 12, Pingdong 3rd Road, Nanping Industry Community, Zhuhai City, GuangDong, China Trademark:

GUANGDONG ROULE ELECTRONICS CO., LTD 2026.01.27 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 STS Test Services 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 : Huahao Zhang/Manager Contact information / address: No. 12, Pingdong 3rd Road, Nanping Industry Community, Zhuhai City, GuangDong, China

FCC ID: Y16-RL22TX External Photos FCC ID: Y16-RL22TX FCC ID: Y16-RL22TX

Label & label location Size:20*10mm FCC ID: YI6-RL22TX

FCC ID: Y16-RL22TX Internal Photos FCC ID: Y16-RL22TX Antenna FCC ID: Y16-RL22TX

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. MPE Report Report No.:STS2512383H01 Issued for GUANGDONG ROULE ELECTRONICS CO., LTD No. 12, Pingdong 3rd Road, Nanping Industry Community, Zhuhai City, GuangDong, China Product Name: Wireless doorbell (transmitter) Brand Name: Model Name: RL-22TX Series Model(s): N/A FCC ID: Y16-RL22TX Test Standards: FCC 47CFR §2.1093 Page 2 of 8 Report No.: STS2512383H01 TEST REPORT Applicant’s Name ................. : GUANGDONG ROULE ELECTRONICS CO., LTD Address ................................. : No. 12, Pingdong 3rd Road, Nanping Industry Community, Zhuhai City, GuangDong, China Manufacturer's Name ........... : GUANGDONG ROULE ELECTRONICS CO., LTD Address ................................. : No. 12, Pingdong 3rd Road, Nanping Industry Community, Zhuhai City, GuangDong, China Product Description Product Name ........................ : Wireless doorbell (transmitter) Brand Name .......................... : Model Name .......................... : RL-22TX Series Model(s) ...................... : N/A Test Standards ..................... : FCC 47CFR §2.1093 447498 D01 Interim General RF Exposure Guidance v06 The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. Date of Test ........................................... : Date of receipt of test item ...................... : 17 Dec. 2025 Date (s) of performance of tests ............. : 17 Dec. 2025 to 22 Dec. 2025 Date of Issue .......................................... : 22 Dec. 2025 Test Result .............................................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 8 Report No.: STS2512383H01 TABLE OF CONTENTS 1. GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST FACTORY 5 2. FCC 47CFR §2.1093 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 TEST RESULT 8 Page 4 of 8 Report No.: STS2512383H01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 22 Dec. 2025 STS2512383H01 ALL Initial Issue Page 5 of 8 Report No.: STS2512383H01 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name Wireless doorbell (transmitter) Brand Name Model Name RL-22TX Series Model(s) N/A Model Difference N/A Product Description The EUT is a Wireless doorbell (transmitter) Operation Frequency: 433.92MHz 304.25MHz Modulation Type: OOK OOK Antenna Designation: Internal antenna Internal antenna Antenna Gain(Peak) 0 dbi 0 dbi Power Rating DC 3V From Battery Adapter N/A Battery N/A Hardware Version N/A Software Version N/A 1.2 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 Page 6 of 8 Report No.: STS2512383H01 2. FCC 47CFR §2.1093 REQUIREMENT 2.1 TEST STANDARDS The limit for Maximum Permissible Exposure (MPE) specified in KDB 447498 D01 General RF Exposure Guidance v06 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. 2.2 LIMIT Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. Page 7 of 8 Report No.: STS2512383H01 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. Page 8 of 8 Report No.: STS2512383H01 2.3 TEST RESULT Trun up Mode Detector Power (dBuV/m) @3m Power (dBm) Max Tune up (dBm) SRD PK 74.13 -21.07 -21±1 Note: Power(dBm)= dBuV/m@3m -95.2 Evaluation Result Mode Frequency MHz Separation distance (cm) Power (dBm) ERP (mW) SAR Test Exclusion Threshold SAR Test Exclusion Estimated SAR SRD 433.92 0.5 -20 0.00001 0.000001 Yes / Note: 1. Remark: The worst case gain of the antenna is 0dBi. 2. Threshold at which no SAR required is 0.000001≤ 3.0 for 1-g SAR, Separation distance ≤ 5mm. ※※※※※END OF THE REPORT※※※※※

Tel: 086-0755-33592127 Fax: 086-0755-36862612 Web: www.silicontra.com 深圳市硅传科技有限 公司 Shenzhen Silicon Transmission Technology Co., Ltd. GC433-A1 433MHz弹簧天线规格书 一、产品描述 GC433-A1弹簧天线,是为433MHz无线通信系统设计的专用天线。天线驻波比性能好, 外形尺寸小巧,结构巧妙,安装方便,性能稳定,具有很好的防振动和老化能力。 二、性能参数 中心频率: 433MHz 驻波比: ≤ 2 增益: 0 DBI 输入阻抗: 50 Ω 接口形式: 直接焊接 天线颜色: 金色 Tel: 086-0755-33592127 Fax: 086-0755-36862612 Web: www.silicontra.com 深圳市硅传科技有限 公司 三、机械尺寸 四、驻波比图 频率：433MHz 驻波SWR：1.875

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Radio Test Report Report No.:STS2512383W01 Issued for GUANGDONG ROULE ELECTRONICS CO., LTD No. 12, Pingdong 3rd Road, Nanping Industry Community, Zhuhai City, GuangDong, China Product Name: Wireless doorbell (transmitter) Brand Name: Model Name: RL-22TX Series Model(s): N/A FCC ID: Y16-RL22TX Test Standards: FCC Part 15.231 Page 2 of 30 Report No.: STS2512383W01 TEST REPORT Applicant’s Name .................: GUANGDONG ROULE ELECTRONICS CO.,LTD. Address ..................................: No. 12, Pingdong 3rd Road, Nanping Industry Community, Zhuhai City, GuangDong, China Manufacturer's Name ...........: GUANGDONG ROULE ELECTRONICS CO.,LTD. Address ..................................: No. 12, Pingdong 3rd Road, Nanping Industry Community, Zhuhai City, GuangDong, China Product Description Product Name ............................ : Wireless doorbell (transmitter) Brand Name ............................... : Model Name ...........................: RL-22TX Series Model(s) ....................: N/A Test Standards .......................... : FCC Part 15.231 Test Procedure ........................... : ANSI C63.10-2020 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC/IC requirements. And it is applicable only to the tested sample identified in the report. The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Date of Test ............................: Date of Receipt of Test Item ...: 17 Dec. 2025 Date of performance of tests ..: 17 Dec. 2025 to 22 Dec. 2025 Date of Issue ..........................: 22 Dec. 2025 Test Result .............................: Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 30 Report No.: STS2512383W01 TABLE OF CONTENTS Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 6 1.2 MEASUREMENT UNCERTAINTY 6 2. GENERAL INFORMATION 7 2.1 GENERAL DESCRIPTION OF THE EUT 7 2.2 DESCRIPTION OF THE TEST MODES 8 2.3 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 8 2.4 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 9 2.5 EQUIPMENTS LIST 10 3. EMC EMISSION TEST 11 3.1 CONDUCTED EMISSION MEASUREMENT 11 3.2 TEST PROCEDURE 12 3.3 TEST SETUP 12 3.4 TEST RESULTS 12 4. RADIATED EMISSION MEASUREMENT 13 4.1 RADIATED EMISSION LIMITS 13 4.2 TEST PROCEDURE 15 4.3 DEVIATION FROM TEST STANDARD 15 4.4 TEST SETUP 16 4.5 EUT OPERATING CONDITIONS 17 4.6 TEST RESULTS 17 4.7 FIELD STRENGTH CALCULATION 18 5. BANDWIDTH TEST 22 5.1 LIMIT 22 5.2 TEST REQUIREMENTS 22 5.3 TEST PROCEDURE 22 5.4 TEST SETUP 22 5.5 EUT OPERATION CONDITIONS 22 5.6 TEST RESULTS 23 6. DUTY CYCLE 24 6.1 TEST PROCEDURE 24 6.2 TEST SETUP 24 6.3 EUT OPERATION CONDITIONS 24 6.4 TEST RESULTS 25 Page 4 of 30 Report No.: STS2512383W01 TABLE OF CONTENTS Page 7. AUTOMATICALLY DEACTIVATE 27 7.1 STANDARD REQUIREMENT 27 7.2 TEST PROCEDURE 27 8. ANTENNA REQUIREMENT 29 8.1 STANDARD REQUIREMENT 29 8.2 EUT ANTENNA 29 APPENDIX 1-PHOTOS OF TEST SETUP 30 Page 5 of 30 Report No.: STS2512383W01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 22 Dec. 2025 STS2512383W01 ALL Initial Issue Page 6 of 30 Report No.: STS2512383W01 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part 15.231,Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission N/A -- 15.205(a)/15.209/ 15.231.(b) Radiated Spurious Emission PASS -- 15.231(a)(1)/ 15.231(b)(2) Transmission requirement PASS -- 15.231(C) 20 dB Bandwidth PASS -- 15.203 Antenna Requirement PASS -- Note: (1) “N/A” denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2020. 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. :101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuh ai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ±U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.751dB 2 Unwanted Emissions, conducted ±2.888dB 3 All emissions, radiated 9K-30MHz ±2.48dB 4 All emissions, radiated 30M-1GHz ±2.52dB 5 All emissions, radiated 1G-18GHz ±3.48dB 6 All emissions, radiated>18GHz ±4.18dB 7 Conducted Emission (9KHz-150KHz) ±2.48dB 8 Conducted Emission (150KHz-30MHz) ±2.52dB 9 Occupied Channel Bandwidth ±3.6% 10 Power Spectral Density, conducted ±1.214dB 11 Duty Cycle ±3.2% Page 7 of 30 Report No.: STS2512383W01 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name Wireless doorbell (transmitter) Trade Name Model Name RL-22TX Series Model N/A Model Difference N/A Product Description The EUT is a Wireless doorbell (transmitter) Operation Frequency: 433.92MHz Modulation Type: OOK Antenna Designation: Internal antenna Antenna Gain(Peak) 0 dbi More details of EUT technical specification, please refer to the User Manual. Channel List Please refer to the Note 3. Power Rating DC 3V From Battery Adapter N/A Battery N/A Hardware version number N/A Software version number/FVIN N/A Connecting I/O Port(s) Please refer to the Note 1. Note: 1. For a more detailed features description, please refer to the manufacturer’s specifications orthe User Manual. 2. Table for filed Antenna Ant. Brand Model Name Antenna Type Connector Gain (dBi) NOTE 1 RL-22TX Internal antenna N/A 0 Antenna Note: The antenna i…

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Page 1 of 1 FCC ID: Y16-RL22TX RE (30MHz-1GHz) RE (Above 1GHz)