Resideo Wi-Fi Water Leak & Freeze Detector (RCHW3610WF1001/N)

Extend and expand: includes a 5′ cable sensor which detects water along its entire length. Additional cables can be added, extending the sensor length up to 500′, allowing you to loop and lay the sensor through a basement or utility room
Works with your Wi-Fi: simply connect your device to the app, and you’ll be able to access all alerts and updates.
Track temperature trends: the battery-operated sensor can notify you in more ways than one by sending notification to your phone with LED status lights and a 100 dB alarm, so you can be confident the hardware will keep you in the know. With included batteries that last up to three years, it can keep track of your humidity and temperature in the monitored area, letting you track your trends via the app