Feature: 1. WS‑20 is a WIFI intelligent flue detector that uses ultra‑low power designs battery life longer. 2. The water leak sensor has a rechargeable battery, which can work more than 6‑12 months under the full state. 3. Take the detector and sensor split design, which can effectively prevent the impact of the high humidity environment on the product. 4. Open 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. 5. Widely used in basement, computer rooms, hotels, water tower, water, pool, swimming pool, solar, kitchen, bathroom, etc. Specification: Item Type: Water Leak Sensor Material: ABS Product Model: WS-20 Battery Model: Lithium Battery 500mAh (with Built-in Battery Delivery) Color: White Charging Current: <125mA Work Current: <130mA. Package List: 1 x Water Leak Sensor1 x Mounting Frame1 x Glue 1 x Probe1 x Manual Note: This device is a low‑power 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.