Features: brand new and high quality Zigbee connection, with for smart for gateway, extremely fast response, real-time perception. Place it at will, high reliability. 0.5mm water immersion detection, extremely fast push to mobile App. No need to install, just place it in a place where it is easy to leak. IPX6 waterproof design, it can continue to work even after flooding. Lithium battery power supply, rechargeable, low power consumption and long battery life. Support intelligent scene control, linkage scene setting. Specifications: Material:ABS Size:Approx.6.9x7.2cm/2.71x2.83inches Color:White Battery Capacity: 3.7V 450mAh Working Temperature: -20°C-85°C Charging Interface: DC5V-1A (Micro USB) Connection Method: ZigBee Package Includes: 1x Flood Sensor 1x Manual 1x USB Cable note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.