1、WIFI water leakage sensor, when it detects water leak, it will notify you immediately through APP and sound DIDI alarm. 2、It can be set to perform intelligent linkage with other devices to avoid further loss of family property. 3、When a water leak occurs and it touches the detection probe, the sensor immediately alarms. The height of the detection probe from the ground is 2mm, which can avoid false alarms. 4、Built‑in 3000mAh rechargeable battery, fully charged can be used for more than one year. Low power consumption, only consumes power when alarming. 5、It is easy to use, just connect the sensor directly to the Wi‑Fi router to use it. You can share the device with multiple family members. 1 x Water Leakage Detector1 x Extension Probe1 x Data Cable1 x Screw1 x Expansion Tube1 x Pin1 x Manual  Item Type: Water Leakage Detector Material: ABSModel: WLS-100WAlarm Sound: 100dB (within 3 meters distance)Battery Type: Lithium battery 3000mAH (built-in)Working Current: <130mAStandby Current: <7uATransmission Signal: 2.4G WiFi