Real-Time Temperature Alert System with Kafka and Vonage

This n8n workflow automates real-time temperature monitoring and alerting using Kafka, conditional logic, and Vonage SMS notifications. It listens to a Kafka topic for temperature data, evaluates if the temperature exceeds a defined threshold, and sends an SMS alert if the condition is met. If the temperature is below the threshold, the workflow ends without taking further action.

The workflow begins with a Kafka Trigger node that subscribes to the ‘topic_test’ topic and parses incoming messages as JSON. The message is expected to contain a ‘temp’ value, which is then evaluated by an IF node. If the ‘temp’ exceeds 50, the workflow proceeds to trigger a Vonage SMS notification, alerting the user about the high temperature. If the temperature is below or equal to 50, the workflow simply terminates with a NoOp node.

This setup is practical for IoT applications, industrial monitoring, or any scenario that requires instant alerts based on sensor data. It ensures timely notifications that can prevent equipment damage or facilitate quick decision-making.