Tuya Zigbee Network Protocol Zigbee Hub is required and sold separately. Compared with wifi, the zigbee gateway signal is more stable, the response speed is faster, safer and more reliable. Other sub-devices can be connected, such as door sensors and temperature and humidity sensors, etc. Sensitive Sensing and Wireless Design Small size of 50*50* 18mm, you can place the water leak detector anywhere drips and leaks may occur. Flood sensor is designed with 2 sensitive water leak detection probes with a water level threshold of 0.5 mm. Home Automation The water sensor alarm is compatible with Alexa and Google Home via Zigbee gateway. Used with other Zigbee smart products to realize an automated scene. For example, turn off the smart plug connected to the washing machine when a water leak from the washing machine is detected. Low Consumption and IP66 Battery life is more than 2 years and you can replace the battery yourself. IP66 waterproof rating allows for extended use in wet areas.