•[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: