Features: Sensor Probe: Designed to be sensitive, detecting shallow leaks to give you an early warning. Full peace of mind: KERUI Water sensor provides 24-hour monitoring. Even you are far from your home,garage,Kitchen,etc,you can check whether water leakage with free Tuya app anytime and anywhere,giving you a full sense of security. Everything is under control: Support checking records and battery level on free Tuya app.Never worry about missing any important moment or running out of battery.If you install more than one KERUI smart wifi water sensor in different places. All the status of water sensor will be displayed simultaneously within the app so that you can easily know what you want at a glance. Easy to Install: No complicated installation tools are required. The sensor can be installed with double-sided adhesive tape or screws(included) in just a few steps, and download an app 'tuya' or 'Smart Life' from GooglePlay or App Store to add the device to detect the status of your water leakage place. Specifications: Battery: AAA 1.5V x 2 (not included). Standby Current: ≤50uA. Protocol: IEEE 802.11b/g/n. Wireless Range: 50m. Operating Temperature: -10℃~40℃ (14℉~104℉). Operating Humidity: 20%~85%. Storage Temperature: -10℃~60℃ (14℉~140℉). Storage Humidity: 20%~85%. Detection mode: Water sense detection. Installation mode: Hanging. Wireless Type: 2.4GHz. Standby Time: 4-6 months. Size: 70 x 36 x 19mm. Detection line length: 1m. Note: 1. This Tuya Water leakage sensor can`t work with kerui G18/ W18/ W20. 2. When the product is not triggered for a long time, the water leak Sensor automatically enters the sleep mode, and the product displays offline. It does not affect the function of the water leak Sensor. How it works: When the water touches the sensor probe, the Sensor will send the alert though the Tuya APP. Package included: 1 x WiFi Smart Water Sensor(not included battery)