Government Utilities Oil AND Gas Rail Chemical Distribution Investor Presentation December 2018 OTCQB: DUOT

Safe Harbor Statement This presentation, as well as other written or oral statements made from time to time, includes “forward-looking statements,” within the meaning of the U.S. Securities Act of 1933, as amended and the U.S. Securities Exchange Act of 1934, as amended, or the “Exchange Act.” Forward-looking statements are not based on historical information and include, without limitation, statements regarding our future financial condition and results of operations, business strategy and plans and objectives of management for future operations. Forward-looking statements reflect our current views with respect to future events. The words “may,” “will,” “expect,” “intend,” “anticipate,” “believe,” “project,” “estimate,” “plans,” “continuing,” or the negative of these words and similar expressions identify forward-looking statements. These forward-looking statements are based upon estimates and assumptions made by us or our officers that, although believed to be reasonable, are subject to certain known and unknown risks and uncertainties that could cause actual results to differ materially and adversely as compared to those contemplated or implied by such forward-looking statements. All forward-looking statements involve risks, assumptions and uncertainties. You should not rely upon forward-looking statements as predictors of future events. The occurrence of the events described, and the achievement of the expected results, depend on many events, some or all of which are not predictable or within our control. Actual results may differ materially from expected results. These risks, assumptions and uncertainties are not all of the important factors that could cause actual results to differ materially from those expressed in any of our forward-looking statements. Other known as well as unknown or unpredictable factors also could harm our results. All of the forward-looking statements we have included in this presentation are based on information available to us on the date of this presentation. We undertake no obligation, and specifically decline any obligation, to update publicly or revise any forward-looking statements, whether as a result of new information, future events or otherwise. In light of these risks, uncertainties and assumptions, the forward-looking events discussed in this presentation might not occur.Any reference to financial projections in this presentation, if any, are for illustrative purposes only and are based upon certain hypothetical assumptions, which we believe are reasonable as of the date of this Presentation. The selection of assumptions requires the exercise of judgment and is subject to uncertainty due to the effect that economic or other changes may have on future events. The assumptions used for the projections in this Presentation, if any, are those we believe to be most significant to the projections. OTCQB: DUOT

Who We Are Headquartered in Jacksonville, FLStaff of 50 and projected to grow to 64 by the end of 2019Design, develop and implement advanced intelligent technologiesIntelligent Sensor and Data AnalyticsAbility to provide valuable information from virtually any sensor or data input Enterprise Information Management (EIM)Translate that information from data analytics into actionable insights, creating:Turnkey Engineered SolutionsIndustry-agnostic with current focus on:rail transportationretail distribution centerscritical infrastructure securitylaw enforcement10 patents granted and 1 patent pending 3

Government Utilities Oil and Gas Rail Chemical Distribution 4 Our Target Markets Select Customers Total Addressable Market is Global and the North American Markets Exceed $100B Alone OTCQB: DUOT

Our Technologies, Products and Applications rip® vue®

Core Software Platforms Modular Common Operating Framework Multi-layered user interface Unified presentation layer allows for easier decision making processes Intelligent Data Analytics Modules OTCQB: DUOT Distributed as licensed software suitesNatively embedded within engineered turnkey systems (Front End) (Back End) Includes various applications of: Artificial Intelligence Machine Learning Video Analytics

Problem and OpportunityMechanical inspection of all rail cars and locomotives is mandatory as they leave the yard.1 Industry ObjectiveReplace/ significantly reduce current in-yard physical inspection practice with an automated process, conducted prior to train entering a yard. MECHANICAL FIELD INSPECTIONSCostlyInconsistentIncreases Dwell Time MECHANICAL FIELD INSPECTIONS ARE:CostlyInconsistentLong Dwell Time 7 1.56M Freight Cars 26,500 Locomotives 500+ Freight Rail Yards The Number of Required Daily Inspections is Enormous Source: US Federal Railroad Administration rip® Railcar Inspection PortalMechanical Inspection (second generation) Current Practices Every time a train enters each yard, car inspectors must:conduct visual, physical inspection of mechanical components “walking” on both sides of each car Process is inefficient and ineffectivedepending on factors such as weather and the availability, motivation and capability of inspectors Time consuming processdwell time 3-4 hrs.+ per train while train is immobilized in an inspection yard 1. Source: US Federal Railroad Administration (FRA) Regulation

The Future of RailcarMechanical Inspections Remote, four-sided (360°), automated mechanical inspection while traveling at speeds of up to 120 MPH before train enters a yard Yard 1 Yard 2 Remote Rail Inspection Portal 360⸰ Inspection rip® OTCQB: DUOT rip® Railcar Inspection PortalMechanical Inspection (second generation) Benefits: Reduction of field labor Substantial reduction of dwell time per train Increased safety, accuracy and efficiencies Increase in average system velocity Prevent derailments (see ROI Study) Substantial savings and positive impact on rail operator’s bottom line Recent Developments: Duos currently has 2 prototypes in operation Recently received order From Canadian National for 4 Complete Systems to be Installed in Canada. Value between $5M and $10M

$60B North American Rail Market "Major freight railroads plan to spend an estimated $29B to build, maintain and grow the rail network." Source: aar.org 2015 Outlook"Big Data will continue to help railroads make intelligent decisions about the rail network and maintain a system of cargo delivery second to none." Source: AAR State of the Industry 2016 Full Report NORTH AMERICAN RAIL MARKET DATA 60B Freight Rail Network 1.56M Freight Cars 26,500 Locomotives 140,000 Miles of Class 1 Track 500+ Freight Rail Yards 21 Regional Railroads 510 Local Railroads $ Source: US Federal Railroad Administration Source: Association of American Railroads 9 Rail Investment Leads to Fewer AccidentsTrain Accidents Per Million Down 43% Since 2000 Source: Association of American Railroads “Total Annual Spending 2013 Data” While inspections are mandated by the FRA, the market for automated solutions is virtually unpenetrated

Under Development Rail Technologies The Future of All Rail TechnologiesUsing algorithms to build analytical modelsHelping computers “learn” from data through deep learning and neural network modeling Track intrusion detection for transit passenger rail platformsIndependent Zone operation – Train detection and Passenger Alert zonesOperator customizationTriggering alarms – programmable thresholdsMask-able areasTrain detection with dynamic masking updateAutomated pantograph inspectionHigh speed thermal vehicle undercarriage examiner (Thermal vue®)Beta Testing CompletedIdentification of “hotspots” on locomotives and railcars OTCQB: DUOT Images collected from the Rail Inspection Portal are applied to custom requirements for automated mechanical, FRA safety and security criteria.

The Future of Duos Technologies NEURAL NETWORKING

centraco® Neural Networking Applications New Product ApplicationsThe combination of neural network modeling with centraco® EIM capabilities are expected to enable processing of complex analytics and pattern recognition processes, ultimately creating new business opportunities down the road Product Price Range Intelligent Correctional Facilities System AutomationRecently completed implementation of South Florida correctional facilityPlanning to build dedicated business and technical implementation unit $500K-$4.0M/unit Automated Logistics Information System (ALIS)Completing distribution center production system for national retail chainPlanning to build dedicated business and technical implementation unit for retail sector $200K-$300K/unit Mobile Trailer Inspection Portal ApplicationsRecently awarded an inspection portal application for FEMA $300K-$500K/unit OTCQB: DUOT

Financial Overview

Income Statement (in ‘000s) Q3 2018 (Unaudited) Q3 2017 Nine Months 2018 (Unaudited) Nine Months 2017 Revenue $5,102 $1,046 $9,490 $3,244 Cost of Sales 2,774 658 5,428 1,875 Gross Margin 2,328 387 4,062 1,369 % of Revenue 46%* 37% 43% 42% Operating Expenses 1,692 1,175 4,796 3,793 Income (Loss) from Operations 636 (788) (734) (2,424) Other Income (Expense) (4) (663) (11) (1,314) Net Income (Loss) $633 ($131) ($745) ($3,756) EPS (LPS) 0.02 (0.07) (0.04) (1.98) OTCQB: DUOT Financial Review (2017 – 2018) Revenue growth and transition to profitability Building momentum for 2019 with key wins in target markets 2018/2019 Guidance 2018 total revenue expected to be >$11 million 2019 revenue initial guidance is $14 to $15 million Earnings Per Share on a fully dilutive basis *Excluding certain “one-off” pass through revenues for construction, the Gross Margin on Revenue was closer to historical norms of >50%

Balance Sheet Data Analysis (in ‘000s) Cash & Accounts Receivable $2,963 Payables, Notes and Accrued Expenses 1,737 Operating Expense Coverage $1,226 Estimated Q4 Net Cash $2,100 Estimated cash receipts in next 30 Days*Estimated cash usage in the next 30 Days** $3,100$1,000 * Based on current billings and anticipated receipts** Based on current and anticipated operating expenses OTCQB: DUOT Based on September 30 10Q(Unaudited)

12 Month Backlog(As of December ’18) Revenue Type Vertical Contract Size $ Projects Rail $6.0M Commercial $1.6M Total Projects $7.6M Service and Support (Recurring) Rail $1.3M Commercial $0.2M Total Recurring (12 Months) $1.5M Licensing, Professional Services & Consulting $0.1M Estimated Rolling Total BacklogPending Orders $9.2M$5.2M OTCQB: DUOT

Investment Highlights Significant, global market opportunitiesCombined North American markets exceed $100B$60B North American rail industry$53B Enterprise Information Management (EIM) Market$ 2B Video Analytics MarketStrong rail industry tailwindsIndustry moving toward automation and optimization to reduce costs, increase safety and improve efficiencySuperior, proprietary technologySpent majority of 2017 on developing in-house technologies to enable exponential scaling in 2018Growing, tier-one customer baseMultiple, multi-million dollar deployments announced in the first nine months of 2018 aloneImproving financial positionFortified balance sheet with no current need to raise capital2018 revenue guidance of $11 million, representing a 183% increase compared to 20172019 preliminary revenue guidance of $14 to $15 million OTCQB: DUOT

Appendices

Experienced Leadership Team Adrian GoldfarbEVP, Chief Financial Officer, DirectorMr. Goldfarb is an industry veteran including more than 35 years in information technology beginning at IBM. For the last 20 years, Mr. Goldfarb has specialized in new venture and early stage organizations where he has assumed roles of increasing responsibility and leadership including CFO, President, and Board Member. Mr. Goldfarb currently serves as our CFO and member of the Board of Directors and oversees the Company’s IT Asset Management business unit. He holds a Bachelors of Arts in Business Administration with a concentration in Finance. John Stuckey VP, Sales & Marketing | Operating SubsidiaryMr. Stuckey is an experienced business development and marketing leader with over 20 years of experience across several business and consumer-facing technical industries. He has an extensive background launching and growing new products and businesses in both early-stage companies as well as large global enterprises from senior leadership positions. Mr. Stuckey serves as our Vice President of Sales & Marketing. He holds both a BA and MBA from Indiana University and received an Online Marketing Professional certification from Duke University. Wm. Scott CarnsSVP, Solutions & Innovations | Operating SubsidiaryMr. Carns has extensive experience in information technology with an emphasis on intelligent video analytics and centralized command and control applications. Prior to joining Duos, Mr. Carns was Information Technologies Coordinator for Environmental Capital Holdings, Inc. and was President of Software Solutions Group, Inc. Mr. Carns supports the sales teams for project implementation. He also served in the US Army and attended Kansas State University. Gianni ArcainiChairman, President, CEO Mr. Arcaini’s thirty-five year executive career began in Europe, leading a range of companies, spanning multiple industries. After immigrating to the United States, Mr. Arcaini formed Environmental Capital Holdings, Inc. (“ECH”), a company focusing on the transfer of technologies from Europe to the U.S. ECH later acquired Duos Engineering B.V. which was later rebranded as Duos Technologies (USA), Inc., the predecessor company of Duos. In 2002, Duos Technologies (USA) spun off from ECH and under the leadership of Mr. Arcaini expanded into a broad-based technology company with a special focus on developing technologies for the homeland security industry. Mr. Arcaini is the inventor or co-inventor of all current technologies offered by Duos and is signatory to 14 patents granted or pending. He graduated from the State Business School in Frankfurt, Germany and is fluent in five languages. Connie WeeksEVP, Chief Accounting OfficerMs. Weeks has over twenty-five years of accounting experience and is responsible for all aspects of financial reporting, internal controls, and cash management. She has been a key member of the Duos team for almost 30 years. She also oversees the Company’s Human Resources function. Noel HeiksPresident, Chief Operating Officer | Operating SubsidiaryMs. Heiks is a technology entrepreneur and a C-Level executive with a career spanning over twenty years in both operational and business development roles. Her science, technology and engineering backgrounds are a valuable combination to effectively lead our business development, engineering and operations teams. She has worked within government and commercial organizations and is proficient in driving business growth through direct customer relations with large organizations. She has a Bachelors degree in Physics, and a Masters in Electrical Engineering from Virginia Tech and authored a thesis in Computer Vision. OTCQB: DUOT David PonevacSVP, Chief Technology Officer | Operating SubsidiaryMr. Ponevac has over fifteen years of software engineering experience concentrating on web and mobile environments. He has considerable expertise in Objective-C, Java, C#, PHP and many other scripting languages. He is also driving the Company’s Artificial Intelligence efforts including platform development. Previously, he was CTO of Luceon LLC and worked with a range of domestic and international clients operating in the public and private sectors. He holds a Bachelors of Science in Electrical Engineering and a Masters in Computer Science. Mike HalterVP, Engineering | Operating SubsidiaryMr. Halter is an accomplished technical leader with 29 years of experience in multiple engineering disciplines including electrical, mechanical, chemical, manufacturing, test and software engineering. His career ranges from leading large groups of engineers in multibillion-dollar corporations to directing small engineering teams in start-up companies and driving them from start-up through acquisition. He has served as the technical team lead in obtaining and maintaining ISO9001 and AS9100 certifications with multiple organizations. He currently serves as our Vice President of Engineering and has primary oversight for the development and delivery of Duos products. He holds a Master of Science degree in Electronic Engineering and Instrumentation as well as a Bachelor of Science degree in Physics.

What Happens At Border CrossingsFreight trains entering the US from Mexico pass Rail Inspection Portals at low speeds Rail cars are then inspected remotely by US Customs and Border Protection (“CBP”)rip® Main ObjectivesDetection of illegal ridersUnder carriage inspection for anomaliesMonitoring for Open Doors and Open/Missing Hatches 20 rip® Railcar Inspection Portal Border Security (first generation) STATUS: COMPLETED Border Crossing DEPLOYMENTS Security Inspections *1 Eagle Pass, TX currently out of order due to derailment Calexico, CA Nogales, AZ El Paso, TX Eagle Pass, TX *1 Saltillo, MX San Luis Potosi, MX Step-by-Step System Summary Live imagery is simultaneously viewed by:1. CBP officers in the field2. The National Rail Targeting Unit (“NRTU”) in the U.S. and in Mexico Each rail car is inspected virtually at the portal using proprietary local database All images are stored on local database and simultaneously uploaded to duostech’s cloud Databases are continuously synchronized Open doors, missing hatches tagged via Automatic Equipment Identification (AEI) tag correlation Changes and suspicious detections are flagged and tagged on centraco® ‘s CBP user interface Comprehensive reporting via e-mail and live displays Individual car tracking throughout rail system

Open Door Detection Linear Panorama View Stitches and synchronizes 360 ͦ views of imagesVisuals from the top, bottom and sides of each rail car passing through the inspection portal The panoramic view allows inspectors to detect: Illegal RiderDetection Open DoorsIdentifies open doors. Identifies location within train. Automatically sends alarm to operators. Open and Missing HatchesIdentifies missing top hatches. Identifies location within train. Automatically sends alarm to operators.Illegal RidersDetects hiding individuals. Identifies location within train. Automatically transmits alarms to operators 21   rip® Rail Inspection PortalBorder Security (first generation) Open or Missing Hatch Detection  Detection at speeds of up to 120 MPH

rip® Examples of 360° Remote Detections Body Bogey Separated from Bearing Adapter Illegal Riders Damaged AEI Tag Damaged Ladder Oil Leak Misaligned Bolster Spring Open Hopper Bottom Hatch Shaved Axel From Break Rod Spring Out of Seated Position Open Cargo Door Open Hatch OTCQB: DUOT These detections are the result of a combined automated (algorithmic) process and the manual verification by our remote inspection team.The manual process is expected to be reduced and eventually significantly reduced as more algorithms are developed.

Intelligent Interface second generation rip® Speed of This Train = 61.3 km/h Algorithmic and Operator Detections Linear Speed Sensor – Accuracy to 0.02 mphImage Capture with Machine Vision – 2px by 2048 pxLine Scans are stitched to a panoramic viewAutomated and inspector detections are flagged in redSynchronized display Inspection Mode with Ultra HD Zoom OTCQB: DUOT

Inspection Mode rip® Enter Inspection Mode Click to Define Area and to Navigate to an Ultra High Definition Image Detail Annotate or select from FRA Library OTCQB: DUOT second generation

$53B Enterprise Information Management (EIM) Market “The global enterprise information management market is expected to grow at a CAGR of 19.5% through 2020.”Source: Research and Markets "Global Enterprise Information Management Market 2016-2020 $2B Video Analytics Market "Analysts forecast the global video analytics market to grow at a CAGR of 33.2% over the period 2014-2019."Source: Technavio, 2015 2012-2016 EIM Growth Driven by Big Data(in Billions of dollars) Rising security and safety issues drive video analytics market growth Additional Market Opportunities EIM optimizes use of information within organizations for decision-making processes and operations that require the availability of knowledge. 25

as of 12/01/2018 Common Stock 21,047,734 WarrantsOptions 24,471,231* 1,067,320** 2,242,000** Series B Convertible Preferred 5,660,000*** Capital Structure * Exercise Price : $0.65** Exercise Price : $1.00+*** Equivalent Common Shares as Converted OTCQB: DUOT

OTCQB: DUOT Contact Us Duos Technologies CorporateTracie HutchinsDuos Technology Group, Inc.904-652-1601tlh@duostech.com Investor RelationsMatt Glover or Tom ColtonLiolios949-574-3860DUOT@liolios.com