2AL6T-WM500Wireless Speaker Microphone

Wireless Speaker Microphone User Manual FCC INFORMATION This devi ce complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: 1. This device may not cause harmful interference. 2. This device must accept any interference received, including interference that may cause undesired operation Notice: 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 or TV technician for help. Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. RF Exposure: The device has been evaluated to meet general RF exposure requirment. The device can be used in portable exposure condition without restriction. PRODU CT FEATURES : 1.Wireless Connection Range: 10 meters 2.Private Listening: 3.5mm Audio Jack 3.Charging voltage. DC5V; Input curren t: 0 . 5 A - 1A 4. 360 degree Rotating Clip 5. USB Type-C Charging 6. Rugged and compact design 7. Frequency: 2.4GHz 8. Voice Prompt function OVERVIEW Table 1: WM500 Overview and Description Description Operation & Functions PTT (Push-To-Talk) Button Press and hold PTT to start the radio transmission, release PTT to receive radio transmission. Power Button Long press the button for 3 seconds to power on or off the WM500 Vo lume + Press to increase Volume Volume - Press to decrease Volume P1 Mu ltifunction (MFB) Button Available multiple functions: (1 ) Whe n pair to Radio Wireless Adapter : Press P1 Button to activate the transmission and then speak into the microphone; Press P1 Button again to end the transmission. (2 ) Whe n pair to Mobile Phone : Short press "P1": to redial the last phone call or answer incomin g phone calls ; Long press "P1": to reject incoming phone calls Double-click "P1": to play & pause music Triple-click "P1": to clear the pairing connection from cellphone. IMPORTANT: The wireless can only connect to one device at a time; So when you pair the to mobile phone, it will disconnect from the radios. 3. 5mm Audio Jack To connect a listen-only earpiece for private listening. USB-C Charging port To charge the WM500 360 degree Rotating Clip To fix the WM500 WM500 WM500 LED Indicator Description Blink ing red Battery is low Solid red Batt ery is charging Solid blue Battery is fully charged Blink ing in blue and red Enter pairing; voice prompt : pairing Blink ing in blue and red Disconnected; voice prompt: disconnected. LED l ight off Connected; voice prompt: connected. Solid green Press PTT for transmission PAIR TO PORTABLE RADIOS (1) Long press the POWER button of the WM500 . WM500 LED flashes red and blue alternatively; while the WM500 will prompt “connected”. (2) To transmit, press and hold the PTT button of the WM500, then speak into the microphone using normal speaking voice. Hold the microphone approximately 1.5 inches (3 to 4 cm) from your lips. (3) Release the PTT button to receive. GETTING STARTED Before you start, fully charge the WM5 00 . To charge, connect the USB charging cable to the WM5 00 then plug it t o the USB power source . Read the following tables to understand the status indication. Table : Table 2: Stat us indication T ROUBLE SHOOTING Description Reason Solutio n Can not power on Battery no power Charge the WM500 Can not charge Charger not well connect Reconnect the charger Can not power off Short press the power off button Long press the power off button for more than 3 seconds. Can not pairing is not in pairing mode Restart the pairing mode Can not pairing no power Charge the WM500 WM500 WM5 00

Quanzhou KST Electronics Co., Limited Add: No.69, Guangfu Industry Park, Xiamei, Nan'an, Quanzhou, Fujian, China Tel: +86-592-5222813 Fax: +86-592-5222813 E-mail: [email protected] Date: 2025-07-30 To: FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir/Madam, We, Quanzhou KST Electronics Co., Limited, hereby authorize Bay Area Compliance Laboratories Corp. (Xiamen) to act as a laboratory for testing and test report generation for the following project(s): (Product name: Wireless Speaker Microphone, Model Name: WM500, ABBREE AR-890, BAOFENG BF-890, Arridioter AD-890, FCC ID: 2AL6T-WM500) The product only supports BT(GFSK, π/4-DQPSK), BLE 1M(GFSK), other functions has been shielded by software, and end user cannot activate them. Sincerely, Signature: Printed name: Shaobo Chen Title: manager

Quanzhou KST Electronics Co., Limited Add: No.69, Guangfu Industry Park, Xiamei, Nan'an, Quanzhou, Fujian, China Tel: +86-592-5222813 Fax: +86-592-5222813 E-mail: [email protected] Attestation Letter Date: 07/30/2025 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i)(ii) Filing FCC ID: 2AL6T-WM500 Quanzhou KST Electronics Co., Limited (“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. Quanzhou KST Electronics Co., Limited (“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. Quanzhou KST Electronics Co., Limited (“the applicant”) certifies that our product does not use Kaspersky's software information. Sincerely, Signature Contact Person: Shaobo Chen Title: manager

U.S. AGENT LETTER OF ATTESTATION Date: 2025-07-30 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID: 2AL6T-WM500 Quanzhou KST Electronics Co., Limited certifies that, as of the date of the filing of the application, Iconsigh Inc. is our designated U.S. agent for service of process for the above referenced FCC ID. Quanzhou KST Electronics Co., Limited accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Iconsigh Inc. accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Company Name: Iconsigh Inc. Address: 2310 Homestead Road, Suite C1, Los Altos, CA, 94024, USA FRN: 0033398652 Tel.: +1 (408) 320-9867 Email: [email protected] Signed by (printed name): Benjamin Kaur Signature: Applicant: Quanzhou KST Electronics Co., Limited Address: No.69, Guangfu Industry Park, Xiamei, Nan'an, Quanzhou, Fujian, China FRN: 0026537688 Tel: +86-592-5222813 Email: [email protected] Signed by (printed name): Shaobo Chen Signature:

QA-FR-170-B Quanzhou KST Electronics Co., Limited Add: No.69, Guangfu Industry Park, Xiamei, Nan'an, Quanzhou, Fujian, China Tel: +86-592-5222813 Fax: +86-592-5222813 E-mail: [email protected] FCC Authorization Date: 2025-07-30 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We , Quanzhou KST Electronics Co., Limited, Hereby authorizes Bay Area Compliance Laboratories Corp. (Xiamen) to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. (Xiamen) on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Client’s signature Contact Person: Shaobo Chen Title: manager

QA-FR-171-A Quanzhou KST Electronics Co., Limited Add: No.69, Guangfu Industry Park, Xiamei, Nan'an, Quanzhou, Fujian, China Tel: +86-592-5222813 Fax: +86-592-5222813 E-mail: [email protected] FCC Confidential Authorization Date: 2025-07-30 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2AL6T-WM500 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Quanzhou KST Electronics Co., Limited hereby requests long-term confidential treatment of information accompanying this application as outlined below:  Block Diagram  Schematics  Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely, Signature: Contact Person: Shaobo Chen Title: manager

Quanzhou KST Electronics Co., Limited ADD: No.69, Guangfu Industry Park, Xiamei, Nan'an, Quanzhou, Fujian, China TEL: + 86-592-5222813 Fax: + 86-592-5222813 E-mail: [email protected] DECLARATION OF SIMILARITY Date: 2025-07-30 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam: We, Quanzhou KST Electronics Co., Limited, hereby declare that the product: Wireless Speaker Microphone, FCC ID: 2AL6T-WM500. model: ABBREE AR-890, BAOFENG BF-890, Arridioter AD-890 are electrically identical with the model: WM500 which was tested by Bay Area Compliance Laboratories Corp. (Xiamen) with the same electromagnetic emissions and electromagnetic compatibility characteristics. A description of the differences between those models and that are declared similar are as follows: They are the same product, just different model name, the rest are the same. Please contact me should there be need for any additional clarification or information. Best Regards, Signature: Printed Name: Shaobo Chen Title: manager

Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 1 / 14 EUT EXTERNAL PHOTOS WM500 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 2 / 14 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 3 / 14 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 4 / 14 ABBREE AR-890 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 5 / 14 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 6 / 14 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 7 / 14 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 8 / 14 Arridioter AD-890 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 9 / 14 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 10 / 14 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 11 / 14 BAOFENG BF-890 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 12 / 14 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 13 / 14 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-EXP Page 14 / 14

Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-INP Page 1 / 7 EUT INTERNAL PHOTOS Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-INP Page 2 / 7 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-INP Page 3 / 7 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-INP Page 4 / 7 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-INP Page 5 / 7 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-INP Page 6 / 7 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-INP Page 7 / 7 Antenna

RF EXPOSURE REPORT For Quanzhou KST Electronics Co., Limited No.69, Guangfu Industry Park, Xiamei, Nan'an, Quanzhou, Fujian, China FCC ID: 2AL6T-WM500 Report Type: Original Report Product Name: Wireless Speaker Microphone Report Number: 2507R19540E-RF-03 Re port Date: 2025-05-20 Reviewed By: Ash Lin Approved By: Miles Chen Prepared By : Bay Area Compliance Laboratories Corp. (Xiamen) Unit 102, No. 902 Meifeng South Road, Binhai West Avenue, Science and Technology Innovation Park, Torch High tech Zone XiaMen Tel: +86-592-3200111 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-03 Page 2 of 7 TABLE OF CONTENTS REPORT REVISION HISTORY................................................................................................................................. 3 GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 RF EXPOSURE EVALUATION ................................................................................................................................. 5 EUT PHOTOGRAPHS ................................................................................................................................................. 6 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-03 Page 3 of 7 REPORT REVISION HISTORY Number of Revisions Report No. VersionIssue Date Description 0 2507R19540E-RF-03 R1V1 2025-05-20 Initial Release Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-03 Page 4 of 7 GENERAL INFORMATION Product Description for Equipment under Test (EUT) Product Name: Wireless Speaker Microphone Tested Model: WM500 Series Models: ABBREE AR-890, BAOFENG BF-890, Arridioter AD-890 Power Supply: DC 3.7V from battery or DC 5V Maximum Output Power: BT: 5.22dBm BLE:-1.72dBm Operating Band/Frequency: 2402-2480 MHz Modulation Type: BT: GFSK, π/4-DQPSK BLE:GFS K Antenna Type: PCB Antenna ★Maximum Antenna Gain: 0 dBi EUT Received Status: Good Note: 1. The Maximum Antenna Gain was declared by manufacturer. 2. The series model is identify with the tested model except for the model name, please refer to declaration letter for more detail. 3. The EUT supplied by the applicant was received on 2025-03-06) Test Facility The Test site used by Bay Area Compliance Laboratories Corp. (Xiamen) to collect test data is located on the Unit 102, No. 902 Meifeng South Road, Binhai West Avenue, Science and Technology Innovation Park, Torch High tech Zone XiaMen. Bay Area Compliance Laboratories Corp. (Xiamen) Lab is accredited to ISO/IEC 17025 by A2LA (Certificate Number: 7134.01) and the lab has been recognized as the FCC accredited lab under the KDB 974614 D01, the FCC Designation No. : CN1384. Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-03 Page 5 of 7 RF EXPOSURE EVALUATION Applicable Standard According to§2.1093, systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission's guideline According to KDB447498 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 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below 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 5) in section 4.1 is applied to determine SAR test exclusion. Measurement Result For BT: The max conducted power including tune-up tolerance is 5.5 dBm (3.5 mW). [(max. power of channel, mW)/(min. test separation distance, mm)][√f(GHz)] =3.5/5*(√2.480) = 1.1< 3.0 For BLE: The max conducted power including tune-up tolerance is -1.5 dBm (0.7 mW). [(max. power of channel, mW)/(min. test separation distance, mm)][√f(GHz)] =0.7/5*(√2.480) =0.2< 3.0 Result: Compliant. The stand-alone SAR evaluation is not necessary Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-03 Page 6 of 7 EUT PHOTOGRAPHS Please refer to the attachment 2507R19540E-RF-EXP EUT EXTERNAL PHOTOGRAPHS and 2507R19540E-RF-INP EUT INTERNAL PHOTOGRAPHS. Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-03 Page 7 of 7 Declarations 1. Bay Area Compliance Laboratories Corp. (Xiamen) is not responsible for authenticity of any information provided by the applicant. Information from the applicant that may affect test results are marked with an asterisk “★”. 2. Unless otherwise stated, the results shown in this test report refer only to the sample(s) tested. 3. Unless required by the rule provided by the applicant or product regulations, then decision rule in this report did not consider the uncertainty. 4. The extended uncertainty given in this report is obtained by combining the standard uncertainty times the coverage factor k=2 with the 95.45% confidence interval. 5. This report cannot be reproduced except in full, without prior written approval of Bay Area Compliance Laboratories Corp. (Xiamen). 6. This report is valid only with a valid digital signature. The digital signature may be available only under the adobe software above version 7.0. ***** END OF REPORT *****

Antenna Desrcibe 1. Antenna Describe Antenna PCB Antenna Antenna Gain 0dBi Frequency Range 2.4GHz-2.483GHz Model Name Manufacture WM500 Quanzhou KST Electronics Co., Limited 2.Picture of antenna2.Picture of antenna Address No.69, Guangfu Industrial Park, Xiamei Town, Nan'an City, Quanzhou, Fujian, China 3：Measurement Result 3.1 Return Loss (S11 ) 3.2 Smith Chart 3.3 Gain

FCC PART 15.247 TEST REPORT For Quanzhou KST Electronics Co., Limited No.69, Guangfu Industry Park, Xiamei, Nan'an, Quanzhou, Fujian, China FCC ID: 2AL6T-WM500 Report Type: Original Report Product Name: Wireless Speaker Microphone Report Number: 2507R19540E-RF-01 Report Date: 2025-09-15 Reviewed By: Ash Lin Approved By: Miles Chen Prepared By : Bay Area Compliance Laboratories Corp. (Xiamen) Unit 102, No. 902 Meifeng South Road, Binhai West Avenue, Science and Technology Innovation Park, Torch High tech Zone XiaMen Tel: +86-592-3200111 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-01 FCC Part 15.247 Page 2 of 87 TABLE OF CONTENTS REPORT REVISION HISTORY................................................................................................................................. 4 GENERAL INFORMATION ....................................................................................................................................... 5 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 5 OBJECTIVE ................................................................................................................................................................... 5 TEST METHODOLOGY .................................................................................................................................................. 5 TEST FACILITY ............................................................................................................................................................. 5 MEASUREMENT UNCERTAINTY .................................................................................................................................... 6 SYSTEM TEST CONFIGURATION .......................................................................................................................... 7 TEST MODE AND VOLTAGE .......................................................................................................................................... 7 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 7 ★EUT EXERCISE SOFTWARE ...................................................................................................................................... 7 SPECIAL ACCESSORIES ................................................................................................................................................. 7 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 7 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 8 EXTERNAL I/O CABLE .................................................................................................................................................. 8 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 8 SUMMARY OF TEST RESULTS ............................................................................................................................. 10 TEST EQUIPMENT LIST ......................................................................................................................................... 11 FCC §15.203 – ANTENNA REQUIREMENT .......................................................................................................... 12 APPLICABLE STANDARD ............................................................................................................................................ 12 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 12 FCC §15.207 (a) – AC LINE CONDUCTED EMISSIONS ..................................................................................... 13 APPLICABLE STANDARD ............................................................................................................................................ 13 TEST SYSTEM SETUP .................................................................................................................................................. 13 EMI TEST RECEIVER SETUP ....................................................................................................................................... 13 TEST PROCEDURE ...................................................................................................................................................... 13 TEST DATA ................................................................................................................................................................ 14 FCC §15.205, §15.209 & §15.247(d) – RADIATED EMISSIONS ........................................................................... 17 APPLICABLE STANDARD ............................................................................................................................................ 17 TEST SYSTEM SETUP .................................................................................................................................................. 17 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP .............................................................................................. 18 FINAL MEASUUREMENT FOR EMISSION IDENTIFED DURING THE PRE-SCAN: ................................................................ 19 TEST PROCEDURE ...................................................................................................................................................... 19 RESULT &MARGIN CALCULATION .................................................................…

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Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-TSP Page 1 / 5 EUT SETUP PHOTOS CE - Front View CE –Near View Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-TSP Page 2 / 5 RE (9kHz~30MHz) RE – Front View (30MHz~1GHz) Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-TSP Page 3 / 5 RE – Back View (30MHz~1GHz) RE – Front View (1 GHz~18 GHz) Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-TSP Page 4 / 5 RE – Back View (1 GHz~18 GHz) RE – Front View (18 GHz~25 GHz) Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2507R19540E-RF-TSP Page 5 / 5 RE – Back View (18 GHz~25 GHz)