Modern traffic management depends on the seamless operation of traffic signals to ensure safety, reduce congestion, and maintain efficient vehicle flow. At the heart of these systems are signal cabinets that house critical electronic equipment. To keep these cabinets operating at peak performance, the role of a Traffic Cabinet Monitor is essential. A Traffic Cabinet Monitor continuously tracks the status of the devices inside traffic control cabinets, including controllers, load switches, detectors, and power supplies. Its primary function is to detect abnormalities such as voltage drops, component failures, or communication errors before they escalate into major problems. By providing real-time alerts, the monitor helps maintenance teams address issues quickly, minimizing downtime and keeping intersections safe and operational.