Fangrui Product Details [remotely Monitoring Leaking] Please Connect The Water Sensor Alarms To Your Phone With Wifi First. No Matter You Are In Another City, State Or Country, Your Smartphone Can Receive The Warning Alert From Water Leak Detector Anywhere. (please Note: 2.4ghz Wifi Only, And Distance Between The Water Sensor And The Router Should Be Within 15 Meters) [app Sms Email Notification, 80db Alarm] The Water Leak Sensor Is Equipped With A Water Detector Probe; When The Probe Detects A , It Sends Out An Alarm Notification Through The App. If Your Wifi Is Temporarily Unavailable, The 80db Water Detector Alarm Is Designed To You Can Hear The Alarm Clearly. [works For Home] No Gateways Or Complicated Required. Only Install Them And Connect To Your Phone! You Can Control Your Water Sensor Alarm Leak Detector Via And Home Assistant Which Is Very Convenient. You Can Also Connect With Multiple Sensors Simultaneously. [ip67 Waterproof] The Water Alarm Leak Detector Probe Is Waterproof And Allows For A Long Time In High-humi