2ASCB-DP031NVBLED Counter

DISPLAYS2GO LED Counter USER MANUAL SKU: DP031NVB N OTE: Please refer to enclosed unpacking instructions to ensure personal and product safety. Before using the product, please read the instructions carefully. Do not attempt to disassemble this product. If the product does not work properly, please call our Customer Service Department at 1-844-221-3393. FCC ID: 2ASCB-DP031NVB This device complies with Part 15 of t he FCC Rules. Operation is subject to the following two conditions: (1)this device may not cause harmful interference, and (2)t his device must accept any interference received, including interference that may cause undesired operation. Any changes/modifications to this equipment not approved by the party responsible for compliance could void the user’s authority to operate the equipment. PAGE 2 TABLE OF CONTENTS Safety Warnings and Precautions ................................................................................................................. 3 Assembly and Connection .............................................................................................................................. 6 Packing List...................................................................................................................................................................... 6 Interface .......................................................................................................................................................................... 7 Operation ........................................................................................................................................................ 8 Power On ....................................................................................................................................................................... 9 Unit Connection Options ............................................................................................................................................... 9 Create and Edit Playlists on PC .................................................................................................................................. 10 Publishing Playlists on PC ........................................................................................................................................... 12 ViPlex Handy on Mobile Phones ............................................................................................................................... 13 Technical Specifications ............................................................................................................................... 14 Troubleshooting Guide ............................................................................................................................... 16 Cleaning and Maintenance ....................................................................................................................................... 17 Names and Contents of Toxic and Hazardous Substances or Elements in the Product ........................................ 17 FCC Statement ............................................................................................................................................................. 18 PAGE 3 Thank you for purchasing this product from Displays2go. We have considered the factors to ensure personal safety in product design and have tested rigorously at the factory. However, improper installation and use may result in electric shock and fire. In order to safely use, maximize performance of the unit and extend the life of the product, please read and follow all instructions carefully before using the product. Keep the instructions for future reference. Symbol Legends: Warning: May cause personal injury or death The operation is prohibited Caution: May cause damage or property loss The operation must be executed If any of the following occurs:  Power outage or instable voltage.  Abnormal sound or smell from the unit.  AC power cord is damaged.  Digital Signage is damaged due to drop, knock or impact.  Any liquid or foreign matters fall into the enclosure. Turn off the Digital Signage immediately, pull out the plug from the power outlet, and reach out to customer service for repair. If coal gas or other flammable gas leaks, do not pull out the plug of the LCD Digital Signage or other electrical appliances; instead, turn off the gas valve immediately, and open the doors and windows quickly. SAFETY WARNINGS AND PRECAUTIONS PAGE 4 Please read below instructions before installation, power-on, operation and testing; Make sure to follow the safety instructions. For any questions, please contact us for assistance. • Due to flame, electric shock, tipping, this product may cause injury to person, even death; • This product is not suitable for swimming pools, sauna, bathroom and other humid environments; • This product is non-waterproof, or cannot be used in complete outdoor environments; • Please do not block the ventilation holes during operation; • Please take moisture-proof measures when packing and putting in stock; • Please do not drop, strike, scratch, warp or shake LED display or external equipment; • Please make sure the product is operated under professional staff due to inside strong current; • Please make sure the ground is flat and even before placing the product; • Ground this product correctly to ensure safety and prevent electric shock; • Please power off the product in thunderstorm weather. Unplug the product if it will not be used for a long time; • We strongly recommend using a surge protector, or a power strip with internal circuit breaker to prevent damages to the product. Do not touch the plugs with wet fingers, or else it will cause electric shock. Do not use the Digital Signage in stormy weather, especially when there is lightning; instead, please disconnect the power and antenna plugs to avoid lightning strike. Do not disassemble the Di…

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(D2G Group LLC) (Feb. 27, 2023) 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 (2ASCB-DP031NVB) [D2G Group LLC] (“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) (Applicant printed name) Rod Washington (D2G Group LLC) (Feb. 27, 2023) 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 (2ASCB-DP031NVB) [D2G Group LLC] (“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) (Applicant printed name) Rod Washington

D2G Group LLC (2023.01.12) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (LED Counter / DP031NVB / FCC ID: 2ASCB-DP031NVB) 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 Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☐ Internal Photos ☐ NOTE 1 ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Signature: Name: Rod Washington Title: VP, Merchandising

D2G Group LLC (2023.01.12) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) 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, Signature: Name: Rod Washington Title: VP, Merchandising

Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 3 Model: DP031NVB External Photos Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 3 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 3

0.5” 2.8341” 1.5" 3" 64mm 40mm 1:1 1:4 LED Counter DP031NVB 2ASCB-DP031NVB 14A 1050W 87mm 52mm LED Counter Model: DP031NVB Display resolution: Single-side: 256(W)*320(H) Three-sides: 768(W)*320(H) Input voltage: 110V,60Hz WiFi ID: (APxxxxxx) WiFi PW: 12345678 Made In China 1:1 1:4 AC 110V LED Counter Model: DP031NVB Display resolution: Single-side: 256(W)*320(H) Three-sides: 768(W)*320(H) Input voltage: 110V,60Hz WiFi ID: (APxxxxxx) WiFi PW: 12345678 Made In China LED Count er Model: DP031NVB Dis play resolution: Single-side: 256(W)*3 20(H) Three -sides: 768(W) *320( H) Input volta ge: 110V,60Hz WiF i ID: (APxxx xxx ) WiF i PW: 1234 5678 Made In China LED Counter DP031NVB 2ASCB- DP031NVB 14A 1050W AC 110V LED Count er DP031NVB 2ASCB- DP031NVB 14 A 1050W AC 110V

Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 7 Model: DP031NVB Internal Photos Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 7 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 7 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 4 of 7 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 5 of 7 ANT Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 6 of 7 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 7 of 7

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2ASCB-DP031NVB Applied procedures / limit According to FCC §15.247(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for Occupational / Controlled Exposure Frequency Range (MHz) Electric 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) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric 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)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 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,R=20cm Test Result of RF Exposure Evaluation Modes& Channel Freq. (MHz) Tune up Produce power Maximu m peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW / cm2 ) Result 2.4G WIFI 802.11b&2 412 7±1 8 6.3096 1.6032 (2.05dBi) 0.00201 1 Pass

2.4GRODANTENNA TECHNICALDATASHEET TX2400-JZ-3RP VERSION：3.3DATE：2021-08-03 TEL：028-61542639WEBSITE：WWW.ZIISOR.COM CHENGDUZIISORTECHNOLOGYCO.,LTD.EXPERTOFIOTANTENNA TX2400-JZ-3RP Copyright@ChengduZiisor TechnologyCo., Ltd 2020Expertof IoT Antenna TX2400-JZ-3RP NO.MECHANICALSPECIFICATIONSVALUECOMMENT 01Part NumberTX2400-JZ-3RP2.4G Ro d Antenna 02MaterialTPEE 03Materialof RadiatorCopper 04ConnectorTypeRP SMA Male 05AntennaColourBlack 06OverallLength32.5 mm 07Cable TypeN/A 08Cable LengthN/A 09Weight3g±1g NO.ELECTRICALSPECIFICATIONSVALUECOMMENT 01Frequency2.4GHz2400~2500MHz 02AntennaGain2.05dBi 03RadiationtypeOmnidirectional 04PolarizationLinearVertical 05NominalImpedance50Ω 06Power Capacity10W 07S.W.R.≤1.5 NO.ENVIRONMENTALSPECIFICATIONSVALUECOMMENT 01OperationTemperature-30 °C～+75°C 02StorageTemperature-30 °C～+75°C 03RoHS CompliantYES TX2400-JZ-3RP Copyright@ChengduZiisorTechnologyCo.,Ltd2020ExpertofIoTAntenna MECHANICALDRAWING UNIT:mm ITEMPARTNAMEQUANTITYMATERIAL/FINISH aRadome1TPEEBlack BConnector1RPSMAMaleGilded TX2400-JZ-3RP Copyright@ChengduZiisorTechnologyCo.,Ltd2020ExpertofIoTAntenna S.W.R. SMITH TX2400-JZ-3RP Copyright@ChengduZiisorTechnologyCo.,Ltd2020ExpertofIoTAntenna EFFICIENCY/GAINTEST No. Frequency Hz Efficiency % Gain dBi 012400M70.622.17 022410M70.791.98 032420M72.952.05 042430M70.631.77 052440M71.991.50 062450M71.071.67 072460M71.531.95 082470M69.502.01 092480M69.021.81 102490M70.791.87 112500M68.442.32 RADIATIONPATTERN 2400MHz 2450MHz 2500MHz TX2400-JZ-3RP Copyright@ChengduZiisorTechnologyCo.,Ltd2020ExpertofIoTAntenna DISCLAIMER Inordertoprovideouruserswithbetterservice,ChengduZiisorTechnologyCo.,Ltd(hereinafter referredtoasziisor)willtrytopresentasdetailedandaccurateproductinformationaspossiblein thismanual.However,duetothetimelinessofthemanualcontent,ziisorshallnotabsolutelyguarantee theunlimitedtimelinessandapplicabilityofthefile.Ziisorhastherighttoupdatethemanualcontent withoutfurthernotice.Togetthelatesteditioninformation,plsvisittheofficialwebsiteofziisor orcontactourcustomerservicestaff.Thanksforyourtrustandsupport! CONTACTUS CompanyNameChengduZiisorTechnologyCo.,Ltd Telephone+86-028-61542639 Websitewww.ziisor.com [email protected] [email protected] CompanyAddress B5MoldingToolIndustryPark,No.199XiQuAvenue, Chengdu,China

Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 63 TEST REPORT Compiled by: Reviewed by: Approved by: Chen Zheng Arron Liu Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Product Name: LED Counter FCC ID: 2ASCB-DP031NVB Trademark: N/A Model Number: DP031NVB Prepared For: D2G Group LLC Address: 81 Commerce Drive, Fall River, Massachusetts 02720, United States Manufacturer: GUANGZHOU YOUGUANG OPTOELECTRONICS CO., LTD. Address: No.75, Pacific Ind. Zone, Xingtang Town, Zengcheng, Guangzhou, 511340 China Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Dec. 30, 2022 Sample tested Date: Dec. 30, 2022 to Jan. 06, 2023 Issue Date: Jan. 06, 2023 Report No.: CTB230106040RFX Test Standards FCC Part15.247 ANSI C63.10:2013 Test Results PASS Remark: This is WIFI-2.4GHz band radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 63 TABLE OF CONTENT Test Report Declaration Page 1. VERSION .......................................................................... 3 2. TEST SUMMARY ................................................................... 4 3. MEASUREMENT UNCERTAINTY ..................................................... 5 4. PRODUCT INFORMATION AND TEST SETUP .......................................... 6 4.1 Product Information .................................................................... 6 4.2 Test Setup Configuration ............................................................... 6 4.3 Support Equipment .................................................................... 6 4.4 Channel List .......................................................................... 7 4.5 Test Mode ............................................................................ 7 4.6 Test Environment ...................................................................... 7 5. TEST FACILITY AND TEST INSTRUMENT USED ....................................... 8 5.1 Test Facility ........................................................................... 8 5.2 Test Instrument Used .................................................................. 8 6. AC POWER LINE CONDUCTED EMISSION ............................................ 10 6.1 Block Diagram Of Test Setup .......................................................... 10 6.2 Limit ................................................................................ 10 6.3 Test procedure ....................................................................... 10 6.4 Test Result .......................................................................... 12 7. RADIATED SPURIOUS EMISSION ................................................... 14 7.1 Block Diagram Of Test Setup .......................................................... 14 7.2 Limit ................................................................................ 14 7.3 Test procedure ....................................................................... 15 7.4 Test Result .......................................................................... 16 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS .......................... 38 8.1 Block Diagram Of Test Setup .......................................................... 38 8.2 Limit ................................................................................ 38 8.3 Test procedure ....................................................................... 38 8.4 Test Result .......................................................................... 39 9. COUDUCTED OUTPUT POWER ..................................................... 46 9.1 Block Diagram Of Test Setup .......................................................... 46 9.2 Limit ................................................................................ 46 9.3 Test procedure ....................................................................... 46 9.4 Test Result .......................................................................... 47 10. 6DB OCCUPIED BANDWIDTH ....................................................... 48 10.1 Block Diagram Of Test Setup ......................................................... 48 10.2 Limit ............................................................................... 48 10.3 Test procedure ...................................................................... 48 10.4 Test Result ......................................................................... 49 11. POWER SPECTRAL DENSITY ...................................................... 54 11.1 Block Diagram Of Test Setup ......................................................... 54 11.2 Limit ............................................................................... 54 11.3 Test procedure ...................................................................... 54 11.4 Test Result ......................................................................... 55 12. ANTENNA REQUIREMENT ......................................................... 60 13. EUT PHOTOGRAPHS .............................................................. 61 14. EUT TEST SETUP PHOTOGRAPHS .........................................…

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Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 2 Model: DP031NVB Radiated Emission Below 1G Above 1G Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB230106040RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 2 Conducted emissions