Mobile Phone Reminder: Connect the Water Leakage Alarm to Wi-Fi, and when a water leak occurs, even if you are not at home, it will immediately send a reminder to you via Tuya Smart/Smart Life APP. Local Alarm: When the detector is immersed in water, the Wi-Fi Water Sensor will send out a sound signal to alert everyone in the house. INSTALLATION F ACILE: The water sensor works with your home's WiFi. No hub required. Tuya/Smart Life APP control. It pairs right out of the box. Great design: small and sleek. Low power consumption design, so the water leak sensor can work for a long time. Battery life up to 1.5 years. Battery is replaceable (battery not included) Note: The data is all manual measurement, please allow 1 - 3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical object received Delivery Quantity: (according to the main image)