A smart flood detection IoT system uses sensors and devices to detect the presence of water in a building or an area prone to flooding. The system typically consists of multiple water sensors placed in different locations throughout the building or area, which can detect the presence of water and send an alert to a central monitoring system.

The sensors used in a smart flood detection IoT system can be wired or wireless and are typically battery-powered for easy installation and maintenance. They may be placed in areas such as basements, near water heaters or washing machines, or in outdoor areas prone to flooding.

When a sensor detects water, it sends a signal to a central control panel or hub, which can trigger an alert through a mobile app, email, or SMS. The alert can be sent to the building owner, manager, or a designated emergency response team, who can take appropriate action to minimize damage and prevent further flooding.

Overall, a smart flood detection IoT system can provide early warning of potential flooding and help prevent costly damage to buildings and properties.