The Aqara Water Leak Sensor T1 (WL-S02D) helps you protect your home from accidental flooding by detecting moisture in real time. This compact device, measuring 50 x 50 x 15 mm and weighing just 32 g, uses a Zigbee 3.0 wireless protocol to communicate with an Aqara hub, which is required for operation. It is built with an anti-UV housing and carries an IP67 rating, making it resistant to both water and dust for reliable placement in damp environments. Detection begins as soon as water reaches a level of approximately 0.5 mm, triggering immediate notifications through the Aqara Home app or critical alerts via Apple Home. You can also integrate it with Samsung SmartThings or Yandex Smart Home to coordinate your smart ecosystem. For those needing to monitor a wider area, the sensor features probe screws that allow you to connect external wires and extend the detection zone. Powered by a CR2032 battery, the sensor is designed for long-term use with a lifespan exceeding two years under normal conditions. It operates effectively in temperatures from 0 °C to 55 °C and can handle humidity levels up to 100% RH. The device also supports OTA firmware updates, ensuring its functionality remains current without needing manual hardware changes.