A flood sensor will help you react to water leaking from a broken pipe, a running faucet, or in the event of flooding in the house or apartment caused by external factors. The sensor should be placed in such a location as to enable water detection in the event of flooding. It has a built-in acoustic alarm, but you will also get the information from the app on your mobile device, even when you are away from home. The alarm will let you know when the battery is low. Learn more about Kanlux SMART at www.kanluxsmart.com.