2BKJ8-M9Wireless Lavalier Microphones

User Manual Wireless lavalier microphone Model: M9 Welcome to use the wireless lavalier microphone M9. Here are the instructions for use. Product List: Storage bag, transmitter, receiver, instruction manual, charging cable, headphones. Product Description: 1.TX Transmitter: 1: Connection indicator light 2: Noise reduction mode indicator. 3: Reverb mode indicator light 4: Accompaniment mode indicator light. 5: Dodge function indicator light. 6: Battery indicator light. 7: Power button. 8: Mute button. 9: Model switch button.’ 10: Built-in noise-canceling microphone. 11: Fixed sender device clamp. 12: TYPE-C charging port. 2. RX Receiver: 1: 3.5 audio adapter. 2: 3.5mm audio monitoring interface. 3: Insert it into the phone with a type-c port to transfer the sound to the phone. 4: Lightning interface supports audio transmission for phones with Lightning port. 5: Power button. 6: Red and blue indicator lights. 7: TYPEC charging port. Instructions for Use: 1. Mobile live streaming: Connect the receiving device to the smartphone by inserting the Type-C or Lightning port based on the type of port on the phone. Press and hold the power button to turn on the device. If no sending device is connected, the receiving device will blink with a blue light. Then, press and hold the power button on the sending device to turn it on. The receiving device and sending device will automatically connect. The connection indicator lights on the receiving and sending devices will stay on, indicating a successful connection and enabling normal use. 2. Users can use headphones to monitor the sound through the 3.5mm audio port on the receiving end. 3.Receiver: Function description: 1: 3.5 audio adapter, which can be connected to external audio devices that support 3.5mm interface, such as cameras, headphones, and smartphones. 2: 3.5mm audio monitoring interface, which can connect to 3.5mm headphones, speakers, etc., making it convenient for users to hear the sound effects. Functions 1 and 2 can be alternated with each other. 3: Insert it into the phone with a type-c port to transfer the sound to the phone. 4: Lightning interface supports audio transmission for phones with Lightning port. 5: Power on/off button, when the device is off long press to turn on with blue light on; when the device is on, long press to turn off with light off. 6: Red and blue indicator lights, receiver in disconnected state, blue light flashes; connected state, blue light stays on; low battery state, red light flashes; charging state, red light stays on; full charge state, blue light stays on. 7: TYPEC charging port, for charging the device. 4.Transmitter: Function description: The lamp instructions: 1: Connection indicator light: Flashing indicates device disconnected status; steady on, indicates device connected status. 2: Noise reduction mode indicator: Steady light indicates noise reduction mode is activated. 3: Reverb mode indicator light: Constantly on to indicate reverb mode is activated. 4: Accompaniment mode indicator light: Constantly on indicates the accompaniment mode is enabled. 5: Dodge function indicator light: Steady on indicates dodge function activated. 6: Battery indicator light: stays on to indicate sufficient battery level; fast flashing indicates low battery level; slow flashing indicates charging; when fully charged, the battery indicator light stays on. 7: Power button, when the device is powered off, long press until the blue light turns on to power on; when the device is powered off, long press until the light turns off to power off. 8: The mute key, when pressed briefly in non-mute mode, the LED lights of the 2, 3 mode icons will flash; in mute mode, when pressed briefly, exit mute mode, the LED lights of the 2, 3 icons return to the state before mute mode; in non-evade state, the mute key pressed twice continuously enters evade state, the LED of the 5 icon stays on, in evade state, the mute key pressed twice continuously exits evade state, the LED of the 5 icon goes off. 9: Model switch button: By default, it is in the original sound live mode, with modes 2, 3, and 4 all off. When in the original sound live mode, short press the mode switch button to switch to the noise reduction mode, and mode 2 (noise reduction mode) will light up. In the noise reduction mode, short press the mode switch button to switch to the reverb mode, mode 2 (noise reduction mode) will turn off, and mode 3 (reverb mode) will light up. In the reverb mode, short press the mode switch button to switch to the accompaniment mode, mode 3 (reverb mode) will turn off, and mode 4 (accompaniment mode) will light up. In the accompaniment mode, you can connect your phone via Bluetooth to transmit sound in the accompaniment mode. In the accompaniment mode, short press the mode switch button to return to the original sound live mode, with modes 2, 3, and 4 all off, indicating the return to the original sound live mode. Repeat this process to switch between different modes.’ 10: Built-in noise-canceling microphone. 11: Fixed sender device clamp. 12: TYPE-C charging port. 5.Parameter Table： Wireless transmission 2.4GHz adaptive frequency hopping work distance 50 meters Built-in microphone Directionality: Omnidirectional Frequency response range: 20HZ-20KHZ Maximum input SPL 110dB SPL Input dynamics SPL 86dB Battery capacity TX:300mAh RX:200 mAh Maximum usage time TX:12H RX:12H Charge time TX:2H RX:2H Size TX:39.5X35.2X12.5mm RX:51.2X31.2X12.2mm Weight TX:18.9g RX:15.6g FCC warning： 1.This device should be installed and operated with minimum distance 0cm between the radiator&your body. 2.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. 3.Changes or modifications not expressly approved by the party responsible for compliance could v…

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Jiashiwei(Shenzhen) Technology Co., Ltd. Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 8/25/2024 U.S. Agent Designation Jiashiwei(Shenzhen) Technology Co., Ltd. acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2BKJ8-M9): Name and company of U.S. agent: SELLER HELPER INC Physical U.S. address of agent: 1312 17th Street#1298, Denver, CO 80202, Jnited States FRN of U.S. agent: 0033884602 Email address of U.S. agent: [email protected] SELLER HELPER INC acknowledges their obligation to accept service of process on behalf of Jiashiwei (Shenzhen) Technology Co., Ltd. Jiashiwei(Shenzhen) Technology Co., Ltd.with the FRN：0035861855. accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Sincerely, Signature [Name] Gang Liu [Title] Manager [Company] Jiashiwei(Shenzhen) Technology Co., Ltd. [Name of U.S. agent] Fairy Lee [Title of U.S. agent] Manager [Company of U.S. agent] SELLER HELPER INC 48_[mo del] US_Agent_2.911(d)(7) - U, V05

Wireless Lavalier Microphones FCC ID: 2BKJ8-M9 M9 External photographs

Label And Label Location FCC ID: 2BKJ8-M9

Wireless Lavalier Microphones FCC ID: 2BKJ8-M9 M9 Internal photographs

RF Exposure Requirements 1.1 Product Description for Equipment Under Test (EUT) Client Information Applicant: Jiashiwei(Shenzhen) Technology Co., Ltd. Address of applicant: Room 101, building 6, Yinquan Garden, Shangfen Community, Minzhi Street, Longhua District, Shenzhen，Guangdong Province,China Manufacturer: Kejuxin Intelligent Technology (Shenzhen) Co., Ltd Address of manufacturer: 5th Floor, Building 3, No. 28 Qingtang Road, Youganpu, Fenggang Town, Dongguan, Guangdong Province, China General Description of EUT Product Name: Wireless Lavalier Microphones Brand Name: / Model No.: M9 Adding Model(s): / Rated Voltage: DC 5V or DC3.7V Battery Power Adapter: / Software Version: V1 Hardware Version: V5 Serial Number: 23453HY76726 FCC ID: 2BKJ8-M9 Technical Characteristics of EUT Bluetooth Version: V5.4(BDR/EDR mode) Frequency Range: 2402-2480MHz RF Output Power: 3.9dBm (Conducted) Data Rate: 1Mbps, 2Mbps, 3Mbps Modulation: GFSK, Pi/4 QDPSK, 8DPSK Quantity of Channels: 79 Channel Separation: 1MHz Type of Antenna: Chip Antenna Antenna Gain: 2.58dBi 1.2 Standard Applicable According to §1.1307(b)(1) and KDB 447498 D01 General RF Exposure Guidance v06, the following RF exposure evaluation shall to demonstrate RF exposure compliance. [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 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 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 according to 4.1 f) is applied to determine SAR test exclusion. 1.3 Calculation Method Bluetooth Tx frequency range: 2402~2480MHz Min. test separation distance: 5mm Maximum Conducted Output Power: 3.9dBm RF channel transmit frequency: 2402MHz Result: 0.12 Limit: 3.0 So the transmitter complies with the RF exposure requirements and the SAR is not required.

SMD
CERAMIC
ANTENNA
Data
Sheet For 2400-2484MHz 3.2x1.6mm [EIA1206] C A -2450- 31-C HZ3216WA03 Data
Sheet SMD CERAMIC ANTENNA LWA 形状 和 尺 寸(单 位: mm ) S h a p es A n d D im e n s i o n s D im e n s i o n s i n mm 0 . 55±0 .1 3 .1 0 ± 0 .1 0 1. 55 ± 0 .1 00 .4 0 ± 0 .2 0 H ■ 重 量 轻 ， 结 构 紧 凑 Li g h t w e i g h t , c o m p ac t ■ 宽 带 大 ， 低 成 本 Wi de ba n d wi d t h , l ow cos t ■ 高 增 益 内 置 天 线 B u il t- i n a n t e nn a w i t h hi gh g a in 特 征 F eatu r e 应 用 A pp li cat i o n ■ 蓝 牙 技 术 Bl ue t oo t h 2.4 G Hz 频 段 IEEE 80 2.11 g / b ■ 齐格比系统 Zi g bee s y s t e m s ■ 其 它 e t c ... 编 码 P a r t Nu m be rin g Sy ste m Size Material FrequencyType Data
Sheet SMD CERAMIC ANTENNA 电 气 特 性 El ect ri cal C h a r acte ri st i c s p e r lin e ( TA = 2 5 °C ) 2400~2483 MHz 2.58 dB i 72.30 % 50 极 化 Polarization 频 带 Frequency Band * 增 益 Peak Gain 参 数 Parameter 阻 抗 * 效 率 Efficiency Impendance 规 格 Specification 单 位 Units W 线极化 CA - 2450 - 31 - C 评价板 Evaluation Board Data
Sheet SMD CERAMIC ANTENNA & Gain Pattern&Efficiency Data
Sheet SMD CERAMIC ANTENNA FREQUENCY CHARACTERISTICS Data
Sheet SMD CERAMIC ANTENNA 推荐回流剖面 RECOMMENDED REFLOW PROFILE °C °C °C Data
Sheet SMD CERAMIC ANTENNA 胶带尺寸 TAPE DIMEN SIONS F ea t u r e S p ec ifi ca t i o n s T o l e r a n ces W 8 . 00±0 . 3 0 P4. 00 .1 0 E1.7 5 .1 0 F 3 . 50 .1 0 P2 2. 00 .1 0 D1. 50 + 0 .1 0 - 0 . 00 P o 4. 00 .1 0 1 0 P o 4 0 . 00 .2 0 ±0 ±0 ±0 ±0 ±0 ±0 包装形式 Packaging Style REEL DIMENSIONS 数量Quantity:5000pieces per 7 reel Data
Sheet SMD CERAMIC ANTENNA

Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 1 of 64 TEST REPORT Reference No.................... : WTX24X08130013W001 FCC ID ............................... : 2BKJ8-M9 Applicant .......................... : Jiashiwei(Shenzhen) Technology Co., Ltd. Address ............................ : Room 101, building 6, Yinquan Garden, Shangfen Community, Minzhi Street, Longhua District, Shenzhen，Guangdong Province,China Manufacturer .................... : Kejuxin Intelligent Technology (Shenzhen) Co., Ltd Address ............................ : 5th Floor, Building 3, No. 28 Qingtang Road, Youganpu, Fenggang Town, Dongguan, Guangdong Province,China Product Name .................. : Wireless Lavalier Microphones Model No........................... : M9 Standards ......................... : FCC Part 15.247 Date of Receipt sample ... : 2024-08-13 Date of Test....................... : 2024-08-14 to 2024-08-24 Date of Issue .................... : 2024-08-25 Test Report Form No. ...... : WTX_Part 15_247W Test Result........................ : Pass Remarks: The 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 approver. Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. Address: 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Email: [email protected] Tested by: Approved by: Gala Wang Silin Chen Reference No.: WTX24X08130013W001 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 2 of 64 TABLE OF CONTENTS 1. GENERAL INFORMATION ..................................................................................................................................... 5 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ........................................................................... 5 1.2 TEST STANDARDS .................................................................................................................................................................................... 6 1.3 TEST METHODOLOGY ............................................................................................................................................................................. 6 1.4 TEST FACILITY ........................................................................................................................................................................................... 6 1.5 EUT SETUP AND TEST MODE ............................................................................................................................................................. 7 1.6 MEASUREMENT UNCERTAINTY ............................................................................................................................................................ 9 1.7 TEST EQUIPMENT LIST AND DETAILS ............................................................................................................................................. 10 2. SUMMARY OF TEST RESULTS ......................................................................................................................... 13 3. ANTENNA REQUIREMENT ................................................................................................................................. 14 3.1 STANDARD APPLICABLE...................................................................................................................................................................... 14 3.2 EVALUATION INFORMATION ............................................................................................................................................................... 14 4. FREQUENCY HOPPING SYSTEM REQUIREMENTS ..................................................................................... 15 4.1 STANDARD APPLICABLE...................................................................................................................................................................... 15 4.2 FREQUENCY HOPPING SYSTEM ....................................................................................................................................................... 15 4.3 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE ................................................................................................... 16 5. QUANTITY OF HOPPING CHANNELS AND CHANNEL SEPARATION ..................................................... 17 5.1 STANDARD APPLICABLE...................................................................................................................................................................... 17 5.2 TEST SETUP BLOCK DIAGRAM ......................................................................................................................................................... 17 5.3 TEST PROCEDURE ................................................................................................................................................................................ 17 5.4 SUMMARY OF TEST RESULTS/PLOTS ............................................................................................................................................ 18 6. DWELL TIME OF HOPPING CHANNEL ............................................................................................................ 19 6.1 STANDARD APPLICABLE...................................................................................................................................................................... 19 6.2 TEST SETUP BLOCK DIAGRAM ......................................................................................................................................................... 19 6.3 TEST …

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Wireless Lavalier Microphones FCC ID: 2BKJ8-M9 M9 Test setupt photos Radiated emission 30MHz~1GHz Conducted emission Radiated emission Above 1GHz