Flood sensor

PIERRE Pro - Flood sensor is a small device designed to detect water or moisture.

The design includes a compact housing with an opening or sensors exposed to the environment where water detection is crucial.
Inside the device, there are sensors (often conductivity or capacitance sensors) that react when they come into contact with water. The device also includes probes or wires to extend their sensing capability across a larger area.
When water is detected, the sensor triggers an alert. This can be in the form of a loud alarm sound emitted directly from the device or through integration with a home automation system that sends notifications to smartphones or triggers other actions.
Flood sensors are  battery-powered for easy installation and flexibility in placement.  models may also support mains power for continuous operation.
They are commonly installed in areas prone to flooding or water damage, such as basements, laundry rooms, near water heaters, and under sinks.

You can set up scheduled automations to regularly check for leaks at specific times and days. Additionally, during vacations, you can activate a "Vacation" scenario. This ensures that even when you're away, the system monitors for leaks. If any are detected, it automatically shuts off the water supply, preventing potential damage.