Water leakage alarm: When the water level exceeds the sensor, an alarm notification will be sent to your mobile phone to help identify overflow and reduce flood risk. Scheduled defense setup: Set defense to start at night for safer sleep or schedule morning defense activation to ensure safety. APP remote control: Control the sensor through a mobile phone app, connected to the network via Wi-Fi, allowing remote monitoring and control. Sharing function: Share access with family members for joint monitoring and control of water leakage detection. Alarm system: When water comes into contact with the sensor, it connects to your Wi-Fi and sends an alert through the Tuya app. Working temperature: -10°C to 50°C Wi-Fi type: 2.4 GHz 802.11 b/g/n Compatible app: Smart Life Size: 91 x 38 x 22 mm Package included: 2 pcs x Water immersion sensor