2AQBD-R49Wireless Transmitter

User Manual 1. Main Feature: 1). Temperature resolution +/-0.1°C, range: -50°C-70°C 2). Detection time before each transmitter 3). 3 RF channels (Do not connect the channel toggle switch can be used as a single channel. 4). Low power indicator 5) ASK 433.92 MHZ Launch mode 6) RF test mode selection 7) Push control channel selection 8) LED indicator when transmitting 9) Power supply voltage: 2.5V-3.3V 2. RF Test Mode Short-circuit the short-circuit point of the test mode, re-power on, check the temperature and humidity and emit continuously, and there will be LED indications at the same time 3. Transmit data 1) Transmission mode is ASK433.92MHZ 2.) After power-on, the default is CH1, and the push control mode is in the custom channel. After the channel is changed, the new channel data will be sent. Each channel is timed separately. After the channel is changed, the temperature will be tested before the data is transmitted. Bright 4. Low voltage detection type 1) When the electricity is too low, the signal will be transmitted at the same time as the low electricity signal 5. Pow-on and work mode: 1) After power-on or power-on, the temperature and low voltage are detected, and the current temperature data will be transmitted after completion. At the same time, the LED will flash once, and then enter the normal mode. The temperature will be detected before each synchronization period is reached, and the data will be transmitted once. 2) Channel selection, after the channel is selected by the toggle switch, the data must not be transmitted until the next synchronization period arrives 3) Select the default temperature format by selecting points 4) Test mode: After selecting the test mode, you need to restart the machine. In the test mode, the temperature will be continuously detected and emitted. 5) Temperature sensor: 49.12k Battery voltage = 2 x 1.5 (AAA) size alkaline batteries or batteries of the same specification, ambient temperature = 25°C Project Unit Min Tipical Max 1.Supply Voltage: V 2.5 3.0 3.3 2.Standby Current: uA -- 15 3.The RF launch LED current mA -- 15 4.RF receiving distance M 100 -- -- 5. number of RF channel -- 1 -- 3 6.Temperature detection range °C -50 70 7.The operating temperature range °C 0 50 8. Temp accuracy 68 ～ 75°F（20 ～ 24°C）： 32 ～ 122°F（0 ～ 50°C）： -14 ～ 32°F（-10 ～ 0°C）和 122 ～ 140°F （50 ～ 60°C）： °F °F °F -1 -2 -3 +1 +2 +3 FCC STATEMENT 1. 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. 2. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 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 -58 ～ -4°F（-50 ～ -20°C）和 140 ～ 158°F （60 ～ 70°C）： °F -4 +4 9. Humidity ombrology % 1 99 10. Humidity accuracy % 40-80%±5% other±8% 11. Launch cycle Second Chanel 1：57 Chanel 2：67 Chanel 3：79 12. low resistance V 2.3 2.7 13. life of battery Month 12 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. FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.

Fujian Youtong Industries Co.,Ltd Long Term Confidentiality Request Letter 2022-4-9 Eurofins Electrical and Electronic Testing NA, Inc 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Wireless Transmitter / R49/ 2AQBD-R49) 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, Schematic diagram, Operational Description) required to be submitted with this application be permanently withheld from public review. SPECIFY REASON FOR REQUEST (i.e. the above documents are company proprietary information that could never get into the possession of your competition). Please contact me if there is any information you may need. Sincerely, Signature: Name: Dongsheng Huang Job Title: General Manager Address: North part of 1st, 2nd-3rd floor, Building 1#, M9511 industries Park, No.18, Majiang Road, Mawei District, Fuzhou City, Fujian, China

Fujian Youtong Industries Co.,Ltd Agent Authorization Letter 2022-4-9 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 Shenzhen United Testing Technology 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, Signature: Name: Dongsheng Huang Job Title: General Manager Address: North part of 1st, 2nd-3rd floor, Building 1#, M9511 industries Park, No.18, Majiang Road, Mawei District, Fuzhou City, Fujian, China

APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model:R49 Photo 1 Photo 2 Photo 3 Photo 4 Photo 5

Page 1 of 1 page Wireless Transmitter Model No.: R49 Input:1.5V*2 AA battery FCC ID: 2AQBD-R49

APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model:R49 Photo 1 Photo 2 Photo 3 Photo 4 ANTENNA

Page 1 of 27 Report No.: UNIA22041101ER-61 FCC RADIO TEST REPORT FCC ID: 2AQBD-R49 Product： Wireless Transmitter Trade Name： N/A Model Name： R49 Serial Model： N/A Report No.： UNIA22041101ER-61 Prepared for Fujian Youtong Industrial Co. , Ltd. NORTH PART OF 1ST, 2ND-3RD FLOOR, BUILDING 1#, M9511 INDUSTRIES PARK, NO.18, MAJIANG ROAD, MAWEI DISTRICT, FUZHOU CITY, FUJIAN, CHINA Prepared by Shenzhen United Testing Technology Co., Ltd. 2F, Annex Bldg, Jiahuangyuan Tech Park, #365 Baotian 1 Rd, Tiegang Community, Xixiang Str, Bao'an District, Shenzhen, China Page 2 of 27 Report No.: UNIA22041101ER-61 TEST RESULT CERTIFICATION Applicant’s name ................. : Fujian Youtong Industrial Co. , Ltd. Address ................................. : NORTH PART OF 1ST, 2ND-3RD FLOOR, BUILDING 1#, M9511 INDUSTRIES PARK, NO.18, MAJIANG ROAD, MAWEI DISTRICT, FUZHOU CITY, FUJIAN, CHINA Manufacture's Name ............ : Fujian Youtong Industrial Co. , Ltd. Address ................................. : NORTH PART OF 1ST, 2ND-3RD FLOOR, BUILDING 1#, M9511 INDUSTRIES PARK, NO.18, MAJIANG ROAD, MAWEI DISTRICT, FUZHOU CITY, FUJIAN, CHINA Product description Product name............................ : Wireless Transmitter Trade Mark ............................ : N/A Model and/or type reference : R49 Standards ............................. : FCC Part 15 Subpart C 15.231 ANSI C63.10: 2013 This device described above has been tested by Shenzhen United Testing Technology Co., Ltd., and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of UNI, this document may be altered or revised by Shenzhen United Testing Technology Co., Ltd., personnel only, and shall be noted in the revision of the document. Date of Test ........................................... : March26, 2022~ April07, 2022 Date (s) of performance of tests ............. : April 07, 2022 Date of Issue .......................................... : April 08, 2022 Test Result.............................................. : Pass Prepared by: Jackson Fang/Editor Reviewer: Kahn yang/Supervisor Approved & Authorized Signer: Liuze/Manager Page 3 of 27 Report No.: UNIA22041101ER-61 Table of Contents 1 TEST SUMMARY ...................................................................................................................................................... 4 2 GENERAL INFORMATION ......................................................................................................................................... 6 2.1 ENVIRONMENTAL CONDITIONS ................................................................................................................................. 6 2.2 GENERAL DESCRIPTION OF EUT .................................................................................................................................. 6 2.3 CARRIER FREQUENCY OF CHANNELS .......................................................................................................................... 6 2.4 OPARATION OF EUT DURING TESTING ....................................................................................................................... 7 2.5 DESCRIPTION OF TEST SETUP ..................................................................................................................................... 7 2.6 MEASUREMENT INSTRUMENTS LIST .......................................................................................................................... 8 3 TEST CONDITIONS AND RESULTS ............................................................................................................................. 9 3.1 CONDUCTED EMISSIONS TEST .................................................................................................................................... 9 3.2 RADIATED EMISSION TEST ........................................................................................................................................ 10 3.3 -20db OCCUPIED BANDWIDTH ................................................................................................................................. 19 3.4 Release time measurement ...................................................................................................................................... 20 3.5 Average factor measurement ................................................................................................................................... 22 3.6 ANTENNA REQUIREMENT......................................................................................................................................... 26 4 PHOTOGRAPH OF TEST .......................................................................................................................................... 27 Page 4 of 27 Report No.: UNIA22041101ER-61 1 TEST SUMMARY 1 TEST PROCEDURES AND RESULTS FCC and IC Requirements FCC Part 15.207 Conducted Emission N/A FCC Part 15.231(e) Radiated Emission Compliant FCC Part 15.231(c) 20dB Bandwidth Compliant FCC Part 15.231(e) Release Time Measurement Compliant FCC Part 15.203 Antenna Requirement Compliant The product is a activated auto matically transmitter. 2 TEST FACILITY Test Firm : Shenzhen United Testing Technology Co., Ltd. Address : 2F, Annex Bldg, Jiahuangyuan Tech Park, #365 Baotian 1 Rd, Tiegang Community, Xixiang Str, Bao'an District, Shenzhen, China The testing quality ability of our laboratory meet with "Quality Law of People's Republic of China" Clause 19.The testing quality system of our laboratory meets with ISO/IEC-17025 requirements. This approval result is accepted by MRA of APLAC. Our test facility is recognized, certified, or accredited by the following organizations: A2LA Certificate Number: 4747.01 The EMC Laboratory has been accredited by A2LA, and in complian…

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APPENDIX I-PHOTOGRAPHS OF Setup photo Model:R49 Radiated Emission Photo 1 Radiated Emission Photo 2