Aqara Water Leak Sensor | Flood DetectorThe Aqara Water Leak Sensor detects water leaks and flooding in your property. When a water leak or flooding occurs, it sends an instant alert notification via the app. It also works with other smart accessories to automate your home. Triggers Alarm When Flooding is Detected: When the water level reaches up to 0. 5mm, the Water Leak Sensor will trigger the Aqara Hub (not included) to sound an alarm and send a notification to your phone. IP67