This document describes a system to monitor carbon monoxide (CO) levels in endothermic industrial processes in real-time using the Industrial Internet of Things (IIoT). A CO sensor will detect CO levels which an ARM microcontroller will process into parts per million. An ESP32 will transmit the data via MQTT protocol to a server or cloud for remote monitoring. The system aims to warn of toxic gas leaks, detect equipment issues, and allow for energy savings through real-time visibility of process parameters. It could be applied to industries like furnaces, forging, and oil and gas to help ensure worker safety and process efficiency.