2AANZ478Bluetooth Speaker

DGL Group LTD. 2045 Lincoln Highway, 3rd Floor, Edison, NJ 08817, United States Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 07-05-2023 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2AANZ478 [DGL Group LTD.] (“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. Sincerely, (Applicant signature) (Amy Chao)

DGL Group LTD. 2045 Lincoln Highway, 3rd Floor, Edison, NJ 08817, United States Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 07-05-2023 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2AANZ478 [DGL Group LTD.] (“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. Sincerely, (Applicant signature) (Amy Chao)

DGL Group LTD. 2045 Lincoln Highway, 3rd Floor, Edison, NJ 08817, United States 2.911 (d)(7)USA Agent v1.2 Section 2.911(d)(7) USA Agent for Service of Process FCC ID: 2AANZ478 2.911(d)(7) USA Designated Agent for Service of Process We, [DGL Group LTD.] (“the applicant”) designate [DGL Group LTD.] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We Acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our 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. Agent obligation: We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address 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. USA Agent & Applicant Company name: DGL Group LTD. Address: 2045 Lincoln Highway, 3rd Floor, Edison, NJ 08817, United States Contact Name: Amy Chao Telephone No: 001-732-692-5180 Email: [email protected] FRN: 0024048670 Signature: Date:Jul.05, 2023 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-comm unications-supply-chain-through-the

DGL Group LTD. 2045 Lincoln Highway, 3rd Floor, Edison, NJ 08817, United States Aug.15, 2023 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject: Explanation of differences between product types FCC ID : 2AANZ478 Model Number: DG-478, DG-478-ASST, DG-478-XXX To Whom It May Concern: We, The DGL Group LTD. hereby declare that the models are identical except the appearance of the color, X is just a letter. Except for the different above, no other modification is performed. Sincerely, Signature: Contact person: Amy Chao

DGL Group LTD. 2045 Lincoln Highway, 3rd Floor, Edison, NJ 08817, United States Agent Authorization Company: DGL Group,Ltd. Address: 2045 Lincoln Highway, Edison, NJ 08817, United States Product Name: Bluetooth Speaker Model Number(s): DG-478, DG-478-ASST, DG-478-XXX Product Description: Bluetooth Speaker We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2023-08-15 Name: Amy Chao Company: DGL Group,Ltd.

DGL Group LTD. 2045 Lincoln Highway, 3rd Floor, Edison, NJ 08817, United States Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2023-07-05 Subject; Request for Confidentiality FCC ID: 2AANZ478 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely Contact person: Amy Chao

Report No.: AGC15705230625AP02 Page 1 of 4 EXTERNAL PHOTOS All VIEW OF EUT (FIGURE 1) All VIEW OF EUT (FIGURE 2) Report No.: AGC15705230625AP02 Page 2 of 4 TOP VIEW OF EUT BOTTOM VIEW OF EUT Report No.: AGC15705230625AP02 Page 3 of 4 FRONT VIEW OF EUT BACK VIEW OF EUT Report No.: AGC15705230625AP02 Page 4 of 4 LEFT VIEW OF EUT RIGHT VIEW OF EUT ****************************************End of Report*************************************

FCC ID Label Location

Report No.: AGC15705230625AP02 Page 1 of 4 INTERNAL PHOTOS OPEN VIEW OF EUT (FIGURE 1) BATTERY VIEW OF EUT (FIGURE 1) Report No.: AGC15705230625AP02 Page 2 of 4 ANTENNA CLOSE-UP PHOTO-1 INTERNAL VIEW OF EUT (FIGURE 1) BT Antenna Report No.: AGC15705230625AP02 Page 3 of 4 INTERNAL VIEW OF EUT (FIGURE 2) INTERNAL VIEW OF EUT (FIGURE 3) Report No.: AGC15705230625AP02 Page 4 of 4 INTERNAL VIEW OF EUT (FIGURE 4) ****************************************End of Report*************************************

OPERATIONAL DESCRIPTION The EUT is designed as “Bluetooth Speaker”. It is designed by way of utilizing the GFSK, Pi/4 DQPSK and 8DPSK technology to achieve the system operation. A major technical description of EUT is described as following Operation Frequency 2.402 GHz to 2.480 GHz RF Output Power 0.592dBm (Max) Bluetooth Version V5.1 Modulation BR GFSK, EDR π /4-DQPSK, 8DPSK BLE GFSK 1Mbps GFSK 2Mbps Number of channels 79 Hardware Version AD-BT-C13 V1.0 Software Version DE78-67DCE7D0 Antenna Designation PCB Antenna (Comply with requirements of the FCC part 15.203) Antenna Gain -0.68dBi Power Supply DC 3.7V by battery or DC 5V by adapter After the product has been connected to DC 3.7V, product will start to work through XTAL24MHz (Y1) vibration. During transmitting, transceiver (U1: AB6969A) will output low-power signals, and then eradiate signals to the space through Antenna network. During receiving signal, antenna will send electromagnetic wave signal, and then signal will be sent to transceiver to demodulate. All additional features that are not directly associated with the transmitter portion which are subject to §15.101 Equipment authorization of unintentional radiators, will be authorized under the SDoC procedure.

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION FCC ID 2AANZ478 Product Description Bluetooth Speaker Model Name DG-478 Frequency Band (Operating) WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.18GHz ~ 5.32GHz / 5.50GHz ~ 5.70GHz WLAN: 5.745GHz ~ 5825GHz Bluetooth: 2.402GHz ~ 2.480GHz Others (NFC:13.56MHz) Device Category Portable (<20cm separation) Mobile (>20cm separation) Others: Antenna Diversity Single antenna Multiple antennas Max. Output Power 0.592dBm (Max) Antenna Gain -0.68dBi Minimum Assessment Distance 5mm Evaluation Applied MPE Evaluation SAR Evaluation Evaluation Result Pass 2. PORTABLE DEVICE EVALUATION METHOD AND LIMIT Following FCC KDB 447498 D01 “General SAR test exclusion guidance” The corresponding SAR Exclusion Threshold condition, listed below: 1) 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)] [if(GHz)] s 3.0 for 1-g SAR and ñ 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 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 is applied to determine SAR test exclusion. 2) At 100 MHz to 6 GHz and for test separation distances > 50 mm, the SAR test exclusion threshold is determined according to the following: a) [Threshold at 50 mm in step 1) + (test separation distance - 50mm) ( f(MHz)/150)] mW, at 100MHz to 1500 MHz; b) [Threshold at 50 mm in step 1) + (test separation distance - 50 mm)-10] mW at > 1500 MHz and ≤6 GHz; 3) At frequencies below 100 MHz, the following may be considered for SAR test exclusion. a) The threshold at the corresponding test separation distance at 100 MHz in step 2) is multiplied by [1 + log(100/f(MHz))] for test separation distances > 50 mm and < 200 mm. b) The threshold determined by the equation in a) for 50 mm and 100 MHz is multiplied by 1/2 for test separation distances ñ 50 mm. c) SAR measurement procedures are not established below 100 MHz. When SAR test exclusion cannot be applied, a KDB inquiry is required to determine SAR evaluation requirements for any test results to be acceptable. 3. MOBILE DEVICE EVALUATION METHOD AND LIMIT Human exposure to RF emissions from mobile devices (47 CFR §2.1091) may be evaluated based on the MPE limits adopted by the FCC for electric and magnetic field strength and/or power density, as appropriate, since exposures are assumed to occur at distances of 20 cm or more from persons. LIMITS FOR GENERAL POPULATION / UNCONTROLLED EXPOSURE Frequency Range (MHz) E-field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Time |E| 2 , |H| 2 or S (Minutes) 0.3 -- 1.34 614 1.63 (100)* 30 1.34 -- 30 824/f 2.19/f (180/f 2 )* 30 30 -- 300 27.5 0.073 0.2 30 300 -- 1500 -- -- f/1500 30 1500 -- 100,000 -- -- 1.0 30 *Note: 1. f= Frequency in MHz * Plane-wave Equivalent Power Density 2. The averaging time for General Population/Uncontrolled exposure to fixed transmitters is not applicable for mobile and portable transmitters. See 47 CFR §§2.1091 and 2.1093 on source-based time-averaging requirement for mobile and portable transmitters. S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna 4. MEASUREMENT RESULT Test Mode Channel Frequency (MHz) Max Output power (dBm) Max Output power (mW) Calculati on Value (Note 1) Threshold Value 8DPSK BT_BR 2480 0.592 1.146 0.359 3.0 Note 1: Calculation Value =[(max. power of channel, mW)/(min. test separation distance, mm)] ·[√f(GHz)]. Fox example: 1.146/5*√2.480=0.359 ≤ 3.0 According to KDB447498 D01 V06, threshold at which no SAR required is ≤3.0 for 1-g SAR, separation distance is 5mm, and no simultaneous SAR measurement is required. 5. CONCLUSION Since Source-base time average power is below SAR test exclusion power thresholds, the SAR evaluation is not required.

ANTENNA SPECIFICATION Summary ITEMANT SPEC Mo del Name 2.4G ANT Ho rizontalVertical 24 00MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Cent er Frequency -1.73 -0.84 -0.68 -6.15 -3.70 -2.32 MAX. Gain -0 .68dBi Po larizationHorizontal and Vertical A zimuth Beam Pattern Omni-directional Impedance50 Ohm A ntenna Length 38.88mm M anufacture Antenna Photo & Length (mm ) Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain(dBi) Frequency (MHz) MaxMinAvg 2400-1.73178-30.0815-8.48713 2450-0.845801-38.5605-7.88012 2500-0.685586-24.0318-6.79139 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dBi) Frequency (MHz) MaxMinAvg 2400-6.1530-24.1420-13.0295 2450-3.7054-26.5836-10.6700 2500-2.32122-30.4301-9.70536

Page 1 of 69 FCC Test Report Report No.: AGC15705230625FE03 FCC ID : 2AANZ478 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Bluetooth Speaker BRAND NAME : N/A MODEL NAME : DG-478, DG-478-ASST, DG-478-XXX APPLICANT : DGL Group LTD. DATE OF ISSUE : Jul. 05, 2023 STANDARD(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC15705230625FE03 Page 2 of 69 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Jul. 05, 2023 Valid Initial Release Report No.: AGC15705230625FE03 Page 3 of 69 TABLE OF CONTENTS 1. VERIFICATION OF CONFORMITY .................................................................................................................. 5 2. GENERAL INFORMATION .............................................................................................................................. 6 2.1. PRODUCT DESCRIPTION ........................................................................................................................ 6 2.2. TABLE OF CARRIER FREQUENCYS ....................................................................................................... 6 2.3. RECEIVER INPUT BANDWIDTH .............................................................................................................. 7 2.4. EXAMPLE OF A HOPPING SEQUENCY IN DATA MODE ......................................................................... 7 2.5. EQUALLY AVERAGE USE OF FREQUENCIES AND BEHAVIOUR ......................................................... 7 2.6. RELATED SUBMITTAL(S) / GRANT (S) .................................................................................................... 8 2.7. TEST METHODOLOGY ............................................................................................................................. 8 2.8. SPECIAL ACCESSORIES ......................................................................................................................... 8 2.9. EQUIPMENT MODIFICATIONS ................................................................................................................. 8 2.10. ANTENNA REQUIREMENT..................................................................................................................... 8 3. MEASUREMENT UNCERTAINTY ................................................................................................................... 9 4. DESCRIPTION OF TEST MODES ................................................................................................................. 10 5. SYSTEM TEST CONFIGURATION ................................................................................................................ 11 5.1. CONFIGURATION OF EUT SYSTEM ...................................................................................................... 11 5.2. EQUIPMENT USED IN TESTED SYSTEM .............................................................................................. 11 5.3. SUMMARY OF TEST RESULTS .............................................................................................................. 11 6. TEST FACILITY .............................................................................................................................................. 12 7. PEAK OUTPUT POWER ................................................................................................................................ 13 7.1. MEASUREMENT PROCEDURE ............................................................................................................. 13 7.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 13 7.3. LIMITS AND MEASUREMENT RESULT .................................................................................................. 14 8. 20DB BANDWIDTH ........................................................................................................................................ 19 8.1. MEASUREMENT PROCEDURE ............................................................................................................. 19 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 19 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................... 20 9. CONDUCTED SPURIOUS EMISSION........................................................................................................... 25 9.1. MEASUREMENT PROCEDURE ............................................................................................................. 25 Report No.: AGC15705230625FE03 Page 4 of 69 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 25 9.3. MEASUREMENT EQUIPMENT USED .................................................................................................... 25 9.4. LIMITS AND MEASUREMENT RESULT .................................................................................................. 25 10. RADIATED EMISSION ................................................................................................................................. 46 10.1. MEASUREMENT PROCEDURE ........................................................................................................... 46 10.2. TEST SETUP ......................................................................................................................................... 48 10.3. LIMITS AND MEASUREMENT RESULT ............................................................................................... 49 10.4. TEST RESULT........................................................................................................................................ 49 11. NUMBER OF HOPPING FREQUENCY ........................................................................…

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Report No.: AGC15705230625AP01 Page 1 of 2 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC15705230625AP01 Page 2 of 2 AC POWER LINE CONDUCTED TEST SETUP RF CONDUCTED TEST SETUP ****************************************End of Report*************************************