Automated Sensor Alert Notifications via Twilio

This n8n workflow automates the process of monitoring sensor data stored in a PostgreSQL database and sending SMS alerts via Twilio when certain thresholds are exceeded. The workflow begins with a scheduled trigger that runs periodically. It queries the database for sensor readings above a specified value (greater than 70) that haven’t yet triggered a notification. For each such record, it sends an SMS alert to notify the relevant parties about the sensor reading. After sending the alert, the workflow updates the database to mark the notification as sent, preventing duplicate alerts. This automation is useful for real-time monitoring of sensors in IoT applications, environmental data tracking, or any system that requires timely notifications based on data thresholds.