Water/flood sensors should be installed in areas prone to water leaks or flooding, such as near water heaters, washing machines, dishwashers, sinks, toilets, basements, and crawl spaces. Install them close to potential sources of leaks for early detection.

If your water/flood sensor detects water or moisture, immediately investigate the source to determine if it's a minor leak or a potential flooding situation. Address the issue promptly to prevent further damage, and consider turning off the water supply if necessary.