1. NASDAQ: ESYS

2. Company Overview U.S. Based Public Company NASDAQ: ESYS Major Markets Oil & Gas – E&P, Midstream, Distribution Electric Power & Utilities Water & Wastewater Agriculture Transportation

3. Company Capabilities Electronic & Mechanical Design Software Engineering Electronic System Manufacturing Application Engineering & Training Field Support & Service

4. Industrial Data Communications Configurable Field Equipment Real-time Communications Gateway Protocol Agnostic Provides Easy System Migration Path MQTT Client RBE Bandwidth Management Automatic Communications Failover Field Data Security Data Logging and Field Data Storage Expansion Cards: Additional Data Ports Serial and Ethernet

5. Expanded Capabilities  Communications Management Integrated Cellular/GPS Multi-Channel Control Cyber Security Options  I/O Expansion Analog/Digital Input Control Output Embedded WirelessHART Embedded Modem Industrial Data Communications

6. Protocol Agnostic Allen-Bradley DF1 Allen-Bradley DH+ Allen-Bradley EN/IP Amocam (all versions) ARCNet ATS BITbus CANbus CA CCM2 CDCI CDCII Conitel DeviceNet Daniel DL130 DNP 3.0 Elliott Enron Modbus F&M Ferranti MK2A Galveston-Houston GPE GSI Harris 5000/5500/6000 Hansa S002 HART Hayes Honeywell DE Kodata L&J LANDAC Landis & Gyr Micromotion Flowscale MODBUS ASCII MODBUS RTU MODBUS Plus MPS9000 MTS Omron Host Link Optomux PERT 2631 Plessey TC6 RDACSII REDAC 70H RNIM Siemens 3964R Siemens RK512 SLIP SNET -I SNET –II GE SRTP TANO Model 10 TANO Model 100 Tejas Total-Flow Transit Bus TRW 9550 Valmet Series 5 Transmitton MT700 TRW S-70 TRW S-703 Varec Wesdac 4F WISP Wireless HART

7. Communications Communications Technology Cellular – CDMA, GSM/GPRS Satellite – Inmarsat/VSAT Serial – RS-232/485 Ethernet – TCP/IP Terrestrial Radio Communications Management Report by Exception Multi-Channel Management Cyber Security

8. Easy Migration Path How we enable migration Flexibility allows customers to operate as if nothing changed by simply installing a Director as a terminal server and router in the field to manage communications and optionally add automatic communications failover management. SCADA Host Poll Response

9. Easy Migration Path How we enable migration Flexibility allows customers to operate as if nothing changed by simply installing a Director as a terminal server and router in the field to manage communications and optionally add automatic communications failover management. SCADA Host Poll Response

10. Easy Migration Path How we enable migration Because the Director is protocol agnostic, site by site, customers are able to poll field equipment locally and convert the equipment protocols to MQTT. This allows users to transition from traditional “Round Robin” polling to a publish/subscribe middleware topology, further reducing bandwidth consumption and data latency (typically by 85%) while gaining greater reliability and quality of data. MQTT SCADA Host Publish AB DF1 Modbus Publish FisherROC Failover Path Middleware

11. Easy Migration Path How we enable migration By adding messaging middleware, other departments/systems can use field data for multiple applications such as inventory, custody transfer, tank information, regulatory reporting systems, SCADA system training, etc… Publish SCADA Host EFMERP Broker Poll Response Publish Failover Path

12. Easy Migration Path How we enable migration Since customers reduce their bandwidth usage, they can begin adding more useful operational data from their field equipment and also add security with encryption and authentication from the field and use the middleware as the “DMZ” before the data enters the enterprise. Encryption SCADA Host EFMERP Broker DMZ Authentication Failover Path

13. Easy Migration Path How we enable migration Middleware also allows users to upgrade/migrate their host systems using live data while operating legacy systems in parallel. SCADA Training New/Upgrade SCADA Legacy SCADA Failover Path Broker

14. Remote Monitoring Solutions Reliable and Adaptable Hardware Periodic, Exception-based Reporting MQTT Client Adaptable Modular Platforms Embedded Cellular Communications Analog/Digital Inputs Pulse Counters Data Logging Control Outputs Serial/Ethernet Interface IP 67 Enclosures Battery, Solar or Site Power Options

15. New Remote Monitoring Products AV Series Platform Basic Remote Monitoring Solution Embedded Cellular Modem MQTT Communications Gateway Analog Inputs and Outputs 4-20mA 0-5V Digital/Serial Counters IP67 Enclosure Customizable Hardware for Specific Applications

16. New Data Communication Products SmartConverter Series Flexible/Configurable Protocol Converter Optional Embedded Cellular Modem Wide Selection of Protocols 2 Ethernet / 1 RS232 / 1 RS485 Firewall and Terminal Server Optional CANBUS MQTT Gateway

17.  Complete Field Data Gateway  RTU/PLC Functionality  Communications Management Integrated Cellular Secure Multi-Channel Control  8 Analog/Digital I/O Channels  2 High Speed Counter Inputs  Wireless HART Gateway  MQTT Enabled  Diverse Field Site Applications Integrated Field Data Gateway

18. Summary Proven and Reliable Solutions Over 14 Years of Experience with MQTT and M2M Customizable and Flexible Solutions Configuration Can be Done Remotely or On-Site Compatible With All Field Devices Multiple Types of Communication Numerous Security Options Customizable Hardware Provides Simple Migration Path