2A5OT-MS890Wireless tv headphones

FCC Statement 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. RF Exposure Information The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 Date:<2022-4-7> Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we requests confidentiality for the following products: FCC ID Model name 2A5OT-MS890 MS890 For the product stated above, we request that the following information be held confidential; Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days External Photos Internal Photos Block Diagram Schematics Test Setup Photos User’s Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely, Name/Title： ping mao wu/General Manager Company: Shenzhen maosong keji youxian gognsi Address: RM 121,Yibeng building,No 1063, Chaguang Road xili district Shenzhen China Phone: 86-755-26652086 Fax: 86-755-26652086 E-Mail: [email protected]

Shenzhen maosong keji youxian gognsi RM 121,Yibeng building,No 1063, Chaguang Road xili district Shenzhen China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2022-4-7 To whom it may concern: We, Shenzhen maosong keji youxian gognsi the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2A5OT-MS890 including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely, Name/Title： ping mao wu/General Manager Company: Shenzhen maosong keji youxian gognsi Address: RM 121,Yibeng building,No 1063, Chaguang Road xili district Shenzhen China Phone: 86-755-26652086 Fax: 86-755-26652086 E-Mail: [email protected]

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202203115 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 4 Product Name: Wireless tv headphones Model No.: MS890 EUT Constructional Details External Photo Report No.: HTT202203115 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 4 Report No.: HTT202203115 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 3 of 4 Report No.: HTT202203115 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 4 of 4 ------End------

FCC ID: 2A5OT-MS890 Label and Location Size: L: 1.5cm*W: 1.0cm Label and Location FCC ID : 2A5OT-MS890

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202203115 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 4 Product Name: Wireless tv headphones Model No.: MS890 EUT Constructional Details Internal Photo Report No.: HTT202203115 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 4 Report No.: HTT202203115 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 3 of 4 Antenna Report No.: HTT202203115 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 4 of 4 ------End------

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202203115F01 This results 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. Page 1 of 18 TEST REPORT Applicant: Shenzhen maosong keji youxian gognsi Address of Applicant: RM 121,Yibeng building,No 1063,Chaguang Road xili district,Shenzhen China Manufacturer/Factory: Shenzhen maosong keji youxian gognsi Address of Manufacturer/Factory: RM 121,Yibeng building,No 1063,Chaguang Road xili district,Shenzhen China Equipment Under Test (EUT) Product Name: Wireless tv headphones Model No.: MS890 Series model: N/A Trade Mark: ansten FCC ID: 2A5OT-MS890 Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.249 Date of sample receipt: Mar.08,2022 Date of Test: Mar.08,2022-Mar.29,2022 Date of report issued: Mar.29,2022 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: HTT202203115F01 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 2 of 18 2 Version Version No. Date Description 00 Mar.29,2022 Original Tested/ Prepared By Date: Mar.29,2022 Project Engineer Check By: Date: Mar.29,2022 Reviewer Approved By : Date: Mar.29,2022 Authorized Signature Report No.: HTT202203115F01 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 3 of 18 3 Contents Page 1 COVER PAGE ............................................................................................................................................ 1 2 VERSION ......................................................................................................................................................... 2 3 CONTENTS ..................................................................................................................................................... 3 4 TEST SUMMARY ............................................................................................................................................ 4 4.1 MEASUREMENT UNCERTAINTY ..................................................................................................................... 4 5 GENERAL INFORMATION ............................................................................................................................. 5 5.1 GENERAL DESCRIPTION OF EUT ................................................................................................................. 5 5.2 TEST MODE ................................................................................................................................................ 6 5.3 DESCRIPTION OF SUPPORT UNITS ............................................................................................................... 6 5.4 DEVIATION FROM STANDARDS ..................................................................................................................... 6 5.5 ABNORMALITIES FROM STANDARD CONDITIONS ........................................................................................... 6 5.6 TEST FACILITY ............................................................................................................................................ 6 5.7 TEST LOCATION .......................................................................................................................................... 6 5.8 ADDITIONAL INSTRUCTIONS ......................................................................................................................... 6 6 TEST INSTRUMENTS LIST ............................................................................................................................ 7 7 TEST RESULTS AND MEASUREMENT DATA ............................................................................................ 8 7.1 ANTENNA REQUIREMENT ............................................................................................................................. 8 7.2 CONDUCTED EMISSIONS ............................................................................................................................. 9 7.3 RADIATED EMISSION METHOD ................................................................................................................... 12 7.3.1 Field Strength of The Fundamental Signal and Spurious emissions ............................................. 14 7.4 20DB OCCUPY BANDWIDTH ...................................................................................................................... 17 8 TEST SETUP PHOTO ................................................................................................................................... 18 9 EUT CONSTRUCTIONAL DETAILS ............................................................................................................ 18 Report No.: HTT202203115F01 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 4 of 18 4 Test Summary Test Item Section in CFR 47 Result Antenna requirement 15.203 Pass AC Power Line Conducted Emission 15.207 Pass Field strength of the fundamental signal 15.249 (a) Pass Spurious emissions 15.249 (a) (d)/15.209 Pass Band edge 15.249 (d)/15.205 Pass 20dB Occupied Bandwidth 15.215 (c) Pass Remarks: 1. Test according to ANSI C63.10: 2013. 2. Pass: The EUT complies with the essential re…

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Shenzhen HTT Technology Co., Ltd. Report No.: HTT202203115 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 2 Product Name: Wireless tv headphones Model No.: MS890 Test Setup Photo Radiated Emission Report No.: HTT202203115 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 2 Conducted Emission ------End------