2BLBK-WN02white noise sound machine

FCC warning statements: 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. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. 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. The device has been evaluated to meet general RF exposure requirement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

Shenzhen Midou Technology Co., Ltd. (September 25, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 ATTN.: white noise sound machine FCC ID: 2BLBK-WN02 Shenzhen Midou Technology Co., Ltd. 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. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Shenzhen Midou Technology Co., Ltd. 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, Signature: Name Yuan wei Position project manager Company Name Shenzhen Midou Technology Co., Ltd. Address Room 1313, Jinbao Science and Technology Innovation Center, Xin’an Street, Bao’an District, Shenzhen City Tel 15712109763 Fax 15712109763 Email [email protected]

Shenzhe Room 1 Road, D Shenzhe China Date: 9/ 2 Federal C Authoriza 28 Canto Hong Ko FCC ID: FRN: 00 US A Shenzhe FCC US Shenzhe the Unite marketing Commiss later. FCC US the desi g Midou T Designat Company FRN: 003 Address: Contact P Phone: 7 Email: Su Sincerely Compan y Company Signature en Midou T 313, Jinbao District 43.X en 25/2024 Communicat ation Room on Road, Tsi ong. 2BLBK-WN 035987866 gent – A en Midou T Agent, LLC en Midou T ed States for g and import sion-related a Agent, LLC, gnated agent Technology ted Agent In y Name: FCC 33402884 3722 Illinoi s Person: Tim 708-571-3148 upport@FCC y, y: Shenzhe y Represent e: Technology o science a Xin'an Stree tions Comm 408, Lippo S im Sha Tsui N02 Attestat Technology to accept se Technology no less than tation of the administrativ accepts as t for the purp Co., Ltd., L nformation: C US Agent, s Avenue, Sa Payne 8 CUSAgent.co n Midou Te ative:Yuanw Co., Ltd. and Techno t, Bao'an D mission Sun Plaza, , Kowloon, tion Sta Co., Ltd. ce ervice of proc Co., Ltd., a n one year af applicable e ve or judicial of the date o pose of acce LIMITED for : , LLC aint Charles, om echnology C wei ologyInnova District, tement ertifies, that cess on our b accepts to m fter either the equipment wi proceeding of the filing o pting service FCC ID: 2B , IL, 60174, U Co., Ltd. ation Cente / Part 2 as of [9/25/2 behalf for FC aintain an ag e grantee ha ithin the U.S involving the of this applica e of process LBK-WN02 USA Designat e Designate Payne Signatur e r, No.89,Xin 2.911(d) 2024], we ha CC ID: 2BLB gent of servi as permanen S., or the con e equipment ation, the ob on behalf o f 2 ed Agent: FC ed Agent Re e: nghua lst )(7) ave designate BK-WN02 ce of proce s ntly terminate clusion of an t, whichever ligation of b e f Shenzhen CC US Agen epresentative ed ss in ed all ny is eing nt, LLC e: Tim

Shenzhen Midou Technology Co., Ltd. (September 25, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (white noise sound machine / WN02 # 2BLBK-WN02#) 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 (Schematics, Block diagram, Operation description) required to be submitted with this application be permanently withheld from public review. These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. Please contact me if there is any information you may need. Sincerely, Signature: Name Yuan wei Position project manager Company Name Shenzhen Midou Technology Co., Ltd. Address Room 1313, Jinbao Science and Technology Innovation Center, Xin’an Street, Bao’an District, Shenzhen City Tel 15712109763 Fax 15712109763 Email [email protected]

Shenzhen Midou Technology Co., Ltd. . ((September 25, 2024) 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 Alpha Product 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, Signature: Name Yuan wei Position project manager Company Name Shenzhen Midou Technology Co., Ltd. Address Room 1313, Jinbao Science and Technology Innovation Center, Xin’an Street, Bao’an District, Shenzhen City Tel 15712109763 Fax 15712109763 Email [email protected]

FCC ID: 2BLBK-WN02 FCC ID: 2BLBK-WN02 FCC ID: 2BLBK-WN02

3cm 1cm Label Location FCC ID: 2BLBK-WN02 Shenzhen Midou Technology Co., Ltd. Product name: white noise sound machine Model No.: WN02 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.

FCC ID: 2BLBK-WN02 FCC ID: 2BLBK-WN02 FCC ID: 2BLBK-WN02 TX ANT FCC ID: 2BLBK-WN02 FCC ID: 2BLBK-WN02

FCC ID: 2BLBK-WN02 RF Exposure evaluation According to 447498 D01 General RF Exposure Guidance v06 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 Worse case is as below: [2402MHz: -3.309dBm (0.467mW) output power] (0.467mW /5mm)·[√2.402(GHz)]= 0.145<3.0 for 1-g SAR Then SAR evaluation is not required

ALPHA's reports is using a digital certificate that is trusted on Adobe's official server. If there is no digital certificate or the digital certificate shows damaged in your report. Please do not accept the report. E-mail: [email protected] Tel: 4008-3008-95 Website: http://www.a-lab.cn FCC TEST REPORT FCC ID: 2BLBK-WN02 On Behalf of Shenzhen Midou Technology Co., Ltd. white noise sound machine Model No.: WN02 Prepared for : Shenzhen Midou Technology Co., Ltd. Address : Room 1313, Jinbao Science and Technology Innovation Center, Xin’an Street, Bao’an District, Shenzhen City Prepared By : Shenzhen Alpha Product Testing Co., Ltd. Address : Building i, No.2, Lixin Road, Fuyong Street, Bao’an District, 518103, Shenzhen, Guangdong, China Report Number : A2409061-C01-R04 Date of Receipt : September 9, 2024 Date of Test : September 9, 2024 - September 19, 2024 Date of Report : September 19, 2024 Version Number : V0 Test Result : Pass Page 2 of 54 Report No.: A2409061-C01-R04 TABLE OF CONTENTS Description Page 1. Summary of Standards And Results ................................................................................................. 6 1.1. Description of Standards and Results ............................................................................................. 6 2. General Information ............................................................................................................................. 7 2.1. Description of Device (EUT) ............................................................................................................. 7 2.2. Accessories of Device (EUT) ............................................................................................................ 8 2.3. Tested Supporting System Details ................................................................................................... 8 2.4. Block Diagram of connection between EUT and simulators ........................................................ 8 2.5. Test Mode Description ....................................................................................................................... 8 2.6. Test Conditions ................................................................................................................................... 9 2.7. Test Facility .......................................................................................................................................... 9 2.8. Measurement Uncertainty ................................................................................................................. 9 2.9. Test Equipment List .......................................................................................................................... 10 3. Maximum Peak Output power .......................................................................................................... 12 3.1. Limit .................................................................................................................................................... 12 3.2. Test Procedure .................................................................................................................................. 12 3.3. Test Setup .......................................................................................................................................... 12 3.4. Test Result ......................................................................................................................................... 12 4. Bandwidth ............................................................................................................................................ 13 4.1. Limit .................................................................................................................................................... 13 4.2. Test Procedure .................................................................................................................................. 13 4.3. Test Result ......................................................................................................................................... 13 5. Carrier Frequency Separation .......................................................................................................... 21 5.1. Limit .................................................................................................................................................... 21 5.2. Test Procedure .................................................................................................................................. 21 5.3. Test Result ......................................................................................................................................... 21 6. Number Of Hopping Channel ........................................................................................................... 23 6.1. Limit .................................................................................................................................................... 23 6.2. Test Procedure .................................................................................................................................. 23 6.3. Test Result ......................................................................................................................................... 23 7. Dwell Time ............................................................................................................................................ 25 7.1. Test limit ............................................................................................................................................. 25 7.2. Test Procedure .................................................................................................................................. 25 7.3. Test Result ...........................................................................................................................…

Text truncated - open the document above for the full version.

ITEM Model Name 2400MHz-1.63dbm2400MHz-6.15dbm 2450MHz -0.69dbm2450MHz-3.71dbm 2500MHz-0.83dbm2500MHz-2.32dbm MAX. Gain Polarization Azimuth Beam Pattern Impedance Antenna Length Manufacture ` Internal antenna Specification Antenna Photo & Length (mm) Horizontal and Vertical Omni-directional 50Ω 31.40mm JZX-TECH CO.,LTD Center Frequency Horizontal Vertical ANT SPEC 2.4G ANT -0.69dbm Manufacturer: Shenzhen Midou Technology Co., Ltd. Address: Room 1313, Jinbao science and TechnologyInnovation Center, No.89,Xinghua lst Road, District 43.Xin'an Street, Bao'an District, Shenzhen, Guangdong. MaxMinAvg 2400MHz -1.63156-30.1254-8.5012 2450MHz -0.83258-38.6012-7.7813 2500MHz -0.69413-24.1358-6.8023 Gain(dB) Horizontal: 2400 MHz 2450 MHz 2500 MHz Max: 0dbm Min: -40dbm Scale: 5/div Frequency MaxMinAvg 2400MHz -6.1424-24.0123-13.0054 2450MHz -3.6125-26.3827-10.5801 2500MHz -2.2321-30.3014-9.6782 Max: 0dbm Min: -30dbm Scale: 5/div Frequency Vertical: 2400 MHz 2450 MHz 2500 MHz Gain(dB)

FCC ID: 2BLBK-WN02 Photo of Radiated Emission test FCC ID: 2BLBK-WN02 Photo of Conducted Emission test