[Wifi+Bluetooth Dual Mode] Connect to the network faster, 2 times faster than using Wifi alone (Bluetooth is only used for network signal connection, Bluetooth cannot be used alone. WIFI+Bluetooth is more stable) [Low Voltage Reminder] When the battery is low, it will automatically remind you to replace the battery, and you never have to worry about the battery running out [APP Notification] The sensor can detect whether there is a water leak at the installation location. When the detector probe detects water, it will immediately alarm and send a notification to your APP [55dB Alarm Sound] The detector has a built-in 55dB alarm sound, allowing people to react in time and deal with it quickly [Third-party voice support] This sensor supports for Amazon Alexa and Google Home Assistant Specifications: Input voltage: DC3V CR123A Quiescent current: <20uA Alarm current: ≤125mA Low voltage indication Alarm sound level: 55db/1m Wireless network: 802.11b/g/n Detection method: Water detection Installation method: Ground installation Battery: CR123A (not included) Operating temperature: -10-50℃ Operating humidity: Up to 95%RH Email method: Mobile notification push (Smart Life/Tuya Smart) Note: The WIFI network only supports 2.4G, not 5G The installation location should be in a stable network environment. When connecting to the network for the first time, try using new batteries. When connecting to the network, turn on the Bluetooth of your phone.