Item Type: Water Leakage Detector Material: ABS Model: WLS-100W Alarm Sound: 100dB (within 3 meters distance) Battery Type: Lithium battery 3000mAH (built-in) Working Current: <130mA Standby Current: <7uA Transmission Signal: 2.4G WiFi Package List 1 x Water Leakage Detector 1 x Extension Probe 1 x Data Cable 1 x Screw 1 x Expansion Tube 1 x Pin 1 x Manual Please connect the valid 2.4G WiFi correctly to use this product. After the sensor is fully charged, you need to disconnect the charging cable. Do not charge it for a long time. 1WIFI water leakage sensor, when it detects water leak, it will notify you immediately through APP and sound DIDI alarm. 2It can be set to perform intelligent linkage with other devices to avoid further loss of family property. 3When 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. 4Builtin 3000mAh rechargeable battery, fully charged can be used for more than one year. Low power consumption, only consumes power when alarming. 5It is easy to use, just connect the sensor directly to the WiFi router to use it. You can share the device with multiple family members.