Y4O-LDMJDrum Module or Digital Drum Set

10 2 1 3 4 8 5 6 7 9 11 12 13 14 15 16 17 1 3 4 6 7 2 5 1 3 4 6 7 2 5 1 3 4 6 7 2 5 10 2 1 3 4 8 5 6 7 9 11 12 13 14 15 16 17 Drum Module or Digital Drum Set 10 2 1 3 4 8 5 6 7 9 11 12 13 14 15 16 17 10 2 1 3 4 8 5 6 7 9 11 12 13 14 15 16 17 10 2 1 3 4 8 5 6 7 9 11 12 13 14 15 16 17 1 3 4 6 7 2 5 1 3 4 6 7 2 5 Important Safety Instructions ( English ) 1. Read and keep these instructions. Heed all warnings and follow all Instructions. 2. Warning (if applicable): Please refer to any important info rmation (e.g., electrical, safety, etc.) printed on the exterior bottom enclosure or rear panel before installing or operating the product. 3. Clean only with dry cloth. 4. Water and Moisture (if applicable): Do not use this apparatus near water. The apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vases, shall be placed on the apparatus. Electrical equipment should NEVER be kept or stored in damp environments. 5. (If applicable) Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. Do not install this equipment in a confin ed or “boxed-in” space such as a bookcase or similar unit, and maintain good ventilation conditions. The ventilation should not be impeded by covering the ventilation openings with items such as newspaper, tablecloths, curtains, etc. 6. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not place expose d flame sources such as lighted candles on the apparatus. 7. (If applicable) This product should be connected to a power supply only of the type described in these operating instructions, or as marked on the unit. 8. (If applicable) Be careful not to damage the power cord. When moving or not using the appliance, secure the power cord (e.g., wrap it with a cable tie). Before using it again, make sure the power cord has not been damaged. If the power cord has been damaged at all, bring the unit and cord to a qualified service technician for repair or replacement as specified by the manufacturer. 9. Unplug this apparatus during lightning storms or when unused for long periods of time. 10. Only use attachment/accessories specified by the manufacturer. 11. (If applicable) Use only the cart, stand, tripod, bracket or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over. 12. Internal/External Voltage Selectors (if applicable): Internal or external voltage selector switches, if any, should only be reset and re-equipped with a proper plug for alternative voltage by a qualified service technician. Do not attempt to alter this yourself. 13. Caution (if applicable): Danger of explosion if battery is incorr ectly replaced. Replace only with the same or equivalent type. Batteries (a battery pack or an in stalled battery) shall not be exposed to excessive heat such as sunshine, fire, etc. 14. (If applicable) Do not defeat the safety purpose of the polarized or grounding-type plug. 15. Protective earthing terminal (if applicable): The ap paratus should be connected to a mains socket outlet with a protective earthing connection. • Denmark ( Danmark ): Apparatets stikprop skal tilsluttes en stikkontakt med jord, som giver forbindelse til stikproppens jord. • Finland ( Suomi ): Laite on liitettävä suojakoskettimilla varustettuun pistorasiaan. • Norway ( Norge ): Apparatet må tilkoples jordet stikkontakt. • Sweden ( Sverige ): Apparaten skall anslutas till jordat uttag. 16. For Class II apparatus only : This symbol means the equipment is a Class II or double-insulated electrical appliance. It has been designed in such a way that it does not require a safety connection to electrical earth. When servicing use only identi cal replacement parts installed by an instructed person or with the use of ready-made leads or cords. 17. Warning (if applicable): Provide an earthing connection be fore the mains plug is connected to the mains. When disconnecting the earthing connection, be sure to disconnect it after pulling the mains plug out from the mains. 18. (If applicable) Where the mains plug or an applian ce coupler is used as the disconnect device, the disconnect device shall remain readily operable . 19. Warning (if applicable): To prevent possible hearing damage, do not listen at high volume levels for long periods. 20. This apparatus is for professional use only . Intended operational climate: moderate. Safety Notices CAUTION : TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE ANY COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIE D SERVICE PERSONNEL ONLY. DANGEROUS VOLTAGE : The lightning flash with arrowhead symbol within the equilateral triangle is intended to alert the user to the presence of un-insulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock. INSTRUCTIONS : The exclamation point within the equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instru ctions in the literature acco mpanying this appliance. CAUTION ( for U.S.A. & CANADIAN models only ): TO PREVENT ELECTRIC SH OCK DO NOT USE THIS (POLARIZED) PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE. NOTICE CONCERNING LASER PRODUCTS : DANGER : INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCK FAILED OR DEFEATED. AVOID DIRECT EXPOS URE TO BEAM. USE OF CONTROLS OR ADJUSTMENTS OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. NOTICE CONCERNING FCC REGULATIONS : You are cautioned that changes or modifications not expressly approved by the part responsible for compliance could void the user’s authority to operate the equipment. This equipment has been tested and found to compl…

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inMusic Brand, Inc. 2023-05-19 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: Y4O-LDMJ) The applicant: inMusic Brand, Inc. 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. Sincerely, Print name: Hill Lien Title: Director of Compliance Signature: inMusic Brand, Inc. 2023-05-19 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: Y4O-LDMJ) The applicant: inMusic Brand, Inc. 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, Print name: Hill Lien Title: Director of Compliance Signature:

Company name: inMusic Brands,Inc. Address: 200 Scenic View Drive, Cumberland, RI 02864 U.S.A FRN: 0022102461 Contact Name: Hill Lien Telephone No: 886 2 2717 2389 Ext.77 Email: [email protected] Signature [name] ：Hill Lien U.S. Agent Information: Company name: inMusic Brands,Inc. Address: 200 Scenic View Drive, Cumberland, RI 02864 U.S.A FRN: 0022102461 Contact Name: Hill Lien Telephone No: 886 2 2717 2389 Ext.77 Email: [email protected] Signature [name] ：Hill Lien Applicant Information： involving the equipment. all marketing and importation or the conclusion of any Commission-related proceeding of process, provides an agent for no less than one year after the grantee has terminated inMusic Brand, Inc. accepts the responsibility to act as designated U.S. agent for service equipment. importation or the conclusion of any Commission-related proceeding involving the agent for no less than one year after the grantee has terminated all marketing and designated U.S. agent for service of process, inMusic Brand, Inc. accepts to maintain an inMusic Brand, Inc. the undersigned, hereby authorize inMusic Brand, Inc. to act as our RE: Attestation Statements Part 2.911(d)(7) request for (FCC ID: Y4O-LDMJ) Columbia, MD 21046, USA 7435 Oakland Mills Road Authorization and Evaluation Division TO: Federal Communications Commission 2023-05-19 Attestation Statements -US agent

Updated on 2005/02/07 by Kally Chan inMusic Brand, Inc. To : The Hong Kong Standards and Testing Centre Limited DECLARATION OF IDENTITY Hereby we: Name of Manufacturer: inMusic Brand, Inc. Address of Manufacturer: 200 Scenic View Drive, Cumberland, RI 02864 U.S.A (Name and Address of Manufacturer) Basic Model Number LDMJ Basic Brand Name: Basic Product Name: Drum Module or Digital Drum Set Basic Test Report Application Number: DM23040185 HMD23040019 DM23040190 HMD23040024 Declare the Circuit, PCB Layout, Electrical Parts and Outlook of the following product(s) are identical to the basic model: New / Additional Model Number(s): LDN0, LDL14, Nitro Max SE, NITRO MAX SE, Nitro Mesh Max, NITRO MESH MAX, Nitro Max, NITRO MAX New / Additional Brand Name(s): New / Additional Product Name: Describe the non-RF boards, and circuitry differences: All models are identical in PCB and schematic designs Describe the RF boards and circuitry differences. All models use the same Bluetooth module Describe the exterior casing and color differences: All models are the same color. If no differences, detail the reasons for obtaining multiple PMN(s)/HVIN(s)/FVIN(s) : Different model for different sellers Remarks: / Signature with Company Chop : Printed Name : Hill Lien DATE: 2023-05-29

inMusic Brand, Inc. Agent Authorization Letter 2023-05-19 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (The Hong Kong Standards and Testing Centre Limited) 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, Print name: Hill Lien Title: Director of Compliance Signature:

inMusic Brand, Inc. Long Term Confidentiality Request Letter Date: 2023-05-19 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Drum Module or Digital Drum Set MODEL: LDMJ FCC ID: Y4O-LDMJ 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/schematics/operational description ) required to be submitted with this application be permanently withheld from public review. 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, Print name: Hill Lien Title: Director of Compliance Signature:

1 External Photo FCC ID: Y4O-LDMJ IC: 11215A-LDMJ View of The Product View of The Product 2 View of The Product View of The Product 3 View of The Product View of The Product 4 View of The Product View of The Product 5 View of The Adapter

1 Internal Photo FCC ID: Y4O-LDMJ IC: 11215A-LDMJ Inner View of the EUT Inner View of the EUT 2 Inner circuit top view Inner circuit bottom view 3 Inner circuit top view Inner circuit bottom view 4 Inner circuit top view Inner circuit bottom view 5 Inner circuit top view Inner circuit bottom view 6 View of BT antenna

RF Exposure Test Requirement: FCC 47CFR 15.247(i) FCC ID: Y4O-LDMJ Test Date: 2023-05-05 Mode of Operation: BT Tx mode Requirements: In 15.247(i), an equipment shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess of the limits in §§ 1.1310 and 2.1093 of this chapter. Applications to the Commission for construction permits, licenses to transmit or renewals thereof, equipment authorizations or modifications in existing facilities must contain a statement confirming compliance with the limits unless the facility, operation, or transmitter is categorically excluded, as discussed below. Technical information showing the basis for this statement must be submitted to the Commission upon request. According to KDB447498 D04 General RF Exposure Guidance v01, Appendix B Exemptions for Single RF Sources, B.3 MPE-based Exemption Test Result of BT Tx mode(DSS): RF Exposure Evaluation The Maximum ERP = 3.237mW (at frequency = 2.480 GHz ) SAR Test Exclusion Thresholds=768mW, The test separation distances is 20 cm

1 Inverted F Antenna Specification Item Antenna Specification Model Name 2.4G ANT Gain 2400MHz 2450MHz 2500MHz 1.33dBi 1.50dBi 1.18dBi Efficiency 70.24% 72.27% 63.66% Impedance 50 ohm Antenna Length 14.4mm VSWR < 1.4 Manufacturer Medeli Musical Instrument (Zhuhai) Co.,Ltd Manufacturer's address Medeli Industrial Park, 2 Shuang Lin East Road, Dalinshan Area, Liangang Industrial Zone, Jinwan District, Zhuhai, China Antenna Dimensions 2 S11 3 Efficiency & Gain Frequency (MHz) Efficiency (dB) Efficiency (%) Gain (dBi) 2400 -1.53 70.24 1.33 2402 -1.53 70.34 1.31 2405 -1.52 70.51 1.33 2410 -1.49 71.01 1.33 2415 -1.50 70.82 1.32 2420 -1.46 71.47 1.41 2425 -1.45 71.57 1.37 2430 -1.43 71.89 1.39 2435 -1.44 71.70 1.34 2440 -1.40 72.38 1.47 2441 -1.40 72.44 1.51 2445 -1.40 72.42 1.44 2450 -1.41 72.27 1.50 2455 -1.45 71.60 1.53 2460 -1.44 71.82 1.51 2465 -1.50 70.76 1.54 2470 -1.56 69.76 1.48 2475 -1.59 69.35 1.46 2480 -1.67 68.13 1.47 2482 -1.71 67.50 1.43 2485 -1.76 66.65 1.33 2490 -1.82 65.75 1.31 2495 -1.91 64.44 1.29 2500 -1.96 63.66 1.18 4 3D Radiation Pattern Front View Side View Total Resp o n se (d B) -16 2 -14 -12 -10 -8 -6 -4 -2 0 X Y Z Azi m uth = 0.0 El evati on = 0.0 Rol l = 0.0 Total Resp o n se (d B) -16 2 -14 -12 -10 -8 -6 -4 -2 0 X Y Z Azi m uth = 0.0 El evati on = 0.0 Rol l = 90.0 5 Configuration Front View Side View

Test Report Date : 2023-05-23 Page 1 of 83 No. : HMD23040019 The Hong Kong Standards and Testing Centre Limited 10 Dai Wang Street, Taipo Industrial Estate, Tai Po, N.T., Hong Kong Tel: +852 2666 1888 Fax: +852 2664 4353 Email: [email protected] Website: www.stc.group This report shall not be reproduced unless with prior written approval from The Hong Kong Standards and Testing Centre Limited. For Conditions of Issuance of this test report, please refer to “Conditions of Issuance of Test Reports” section or Website. Applicant : inMusic Brand, Inc. 200 Scenic View Drive, Cumberland, RI 02864 U.S.A Supplier / Manufacturer : inMusic Brand, Inc. 200 Scenic View Drive, Cumberland, RI 02864 U.S.A Description of Sample(s) : Submitted sample(s) said to be Product: Drum Module or Digital Drum Set Brand Name: Model No.: LDMJ FCC ID: Y4O-LDMJ Date Samples Received : 2023-04-24 Date Tested : 2023-04-24 to 2023-05-05 Investigation Requested : Perform Electro Magnetic Interference measurement in accordance with FCC 47CFR [Codes of Federal Regulations] Part 15 and ANSI C63.10:2013 for FCC Certification. Conclusions : The submitted product COMPLIED with the requirements of Federal Communications Commission [FCC] Rules and Regulations Part 15. The tests were performed in accordance with the standards described above and on Section 2.2 in this Test Report. Remarks : Bluetooth FHSS (GFSK / /4-DQPSK/ 8DPSK) For additional model(s) details, please see page 3. Test by: Susu _______________________________ Dr.CHAN Kwok Hung, Brian Authorized Signatory Test Report Date : 2023-05-23 Page 2 of 83 No. : HMD23040019 The Hong Kong Standards and Testing Centre Limited 10 Dai Wang Street, Taipo Industrial Estate, Tai Po, N.T., Hong Kong Tel: +852 2666 1888 Fax: +852 2664 4353 Email: [email protected] Website: www.stc.group This report shall not be reproduced unless with prior written approval from The Hong Kong Standards and Testing Centre Limited. For Conditions of Issuance of this test report, please refer to “Conditions of Issuance of Test Reports” section or Website. CONTENT: Cover Page 1 of 83 Content Page 2 of 83 1.0 General Details 1.1 Test Laboratory Page 3 of 83 1.2 Equipment Under Test [EUT] Page 3-5 of 83 Description of EUT operation 1.3 Date of Order Page 5 of 83 1.4 Submitted Sample(s) Page 5 of 83 1.5 Test Duration Page 5 of 83 1.6 Country of Origin Page 5 of 83 1.7 RF Module Details Page 6 of 83 1.8 Antenna Details Page 6 of 83 1.9 Channel List Page 6 of 83 2.0 Technical Details 2.1 Investigations Requested Page 7 of 83 2.2 Test Standards and Results Summary Page 8 of 83 2.3 Table for Test Modes Page 9 of 83 3.0 Test Results 3.1 Emission Page 10-78 of 83 Appendix A List of Measurement Equipment Page 79 of 83 Appendix B Photograph(s) of Product Page 80-83 of 83 Test Report Date : 2023-05-23 Page 3 of 83 No. : HMD23040019 The Hong Kong Standards and Testing Centre Limited 10 Dai Wang Street, Taipo Industrial Estate, Tai Po, N.T., Hong Kong Tel: +852 2666 1888 Fax: +852 2664 4353 Email: [email protected] Website: www.stc.group This report shall not be reproduced unless with prior written approval from The Hong Kong Standards and Testing Centre Limited. For Conditions of Issuance of this test report, please refer to “Conditions of Issuance of Test Reports” section or Website. 1.0 General Details 1.1 Test Laboratory The Hong Kong Standards and Testing Centre Ltd. EMC Laboratory 10 Dai Wang Street, Taipo Industrial Estate, New Territories, Hong Kong Telephone: 852 2666 1888 Fax: 852 2664 4353 1.2 Equipment Under Test [EUT] Description of Sample(s) Product: Drum Module or Digital Drum Set Supplier: inMusic Brand, Inc. 200 Scenic View Drive, Cumberland, RI 02864 U.S.A. Brand Name: Model Number: LDMJ Additional Model Name: LDN0, LDL14, Nitro Max SE, NITRO MAX SE, Nitro Mesh Max, NITRO MESH MAX, Nitro Max, NITRO MAX Rating: 9.0Vd.c. by adapter The AC/DC adapter was provided by the applicant with following details: Brand name: GQ; Model no.: GQ07-090050-DX Input: 100-240Va.c. 50-60Hz 0.3A, Output: 9.0Vd.c. 0.5A 4.5W 1.2.1 Description of EUT Operation The Equipment Under Test (EUT) is a Drum Module or Digital Drum Set. The transmission signal is digital modulated with channel frequency range 2402-2480MHz. The R.F. signal was modulated by IC; the type of modulation used was frequency hopping spread spectrum Modulation. 1.3 Date of Order 2023-04-24 1.4 Submitted Sample(s): 1 Sample 1.5 Test Duration 2023-04-24 to 2023-05-05 1.6 Country of Origin China Test Report Date : 2023-05-23 Page 4 of 83 No. : HMD23040019 The Hong Kong Standards and Testing Centre Limited 10 Dai Wang Street, Taipo Industrial Estate, Tai Po, N.T., Hong Kong Tel: +852 2666 1888 Fax: +852 2664 4353 Email: [email protected] Website: www.stc.group This report shall not be reproduced unless with prior written approval from The Hong Kong Standards and Testing Centre Limited. For Conditions of Issuance of this test report, please refer to “Conditions of Issuance of Test Reports” section or Website. 1.7 RF Module Details Module Model Number: ATS2819 Module FCC ID: N/A Module Transmission Type: Bluetooth 5.3 BR+EDR Modulation: FHSS (GFSK / /4-DQPSK/ 8DPSK) Data Rates: 1MBps: GFSK 2 MBps: /4-DQPSK 3 MBps: 8DPSK Frequency Range: 2400-2483.5MHz Carrier Frequencies: 2402MHz – 2480MHz Module Specification (specification provided by manufacturer) 1.8 Antenna Details Antenna Type: PCB antenna Antenna Gain: 1.54dBi 1.9 Channel List Channel Frequency (MHz) Channel Frequency (MHz) 0 2402 42 2444 1 2403 43 2445 2 2404 44 2446 3 2405 45 2447 4 2406 46 2448 5 2407 47 2449 6 2408 48 2450 7 2409 ... ... 8 2410 67 2469 9 2411 68 2470 ... ... 69 2471 33 2435 70 2472 34 2436 71 2473 35 2437 72 2474 36 2438 73 2475 37 2439 74 2476 38 2440 75 2477 39 2441 76 2478 40 2442 77 2479 41 2443 78 2480 Test Report Date : 2023-05-23 Page 5 of 83 No. : HMD23040019 The Hong Kong Standards and Testing Centre Limited 10 Dai Wang Street, Taipo Industrial Estate, Tai Po, N.T., Hong Kong Tel: +…

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1 Test Photo FCC ID: Y4O-LDMJ IC: 11215A-LDMJ Measurement of Radiated Emission Test Set Up Measurement of Radiated Emission Test Set Up 2 Measurement of Radiated Emission Test Set Up Measurement of Conducted Emission Test Set Up