1WS20 is a WIFI intelligent flue detector that uses ultralow power designs battery life longer. 2The water leak sensor has a rechargeable battery, which can work more than 612 months under the full state. 3Take the detector and sensor split design, which can effectively prevent the impact of the high humidity environment on the product. 4Open to use it, just place the sensor to be placed in the area where water may leak, which is very simple to save your time. 5Widely used in basement, computer rooms, hotels, water tower, water, pool, swimming pool, solar, kitchen, bathroom, etc. Item Type: Water Leak Sensor Material: ABS Product Model: WS-20 Battery Model: Lithium Battery 500mAh (with Built-in Battery ) Color: White Charging Current:1 x WaterLeakSensor 1 x Mounting Frame 1 xGlue 1 x Probe 1 x Manual This device is a lowpower product, which can't work while charging. And it will put the equipment after it is fully charged, do not plug power for a long time.