eufy Security Water and Freeze Sensor with Remote Alerts, IP65 Waterproof, 2-Year Battery Life, HomeBase Required, Compatible with HomeBase 2 and 3, Optional 24/7 Protection Service, App Control

Instant Notifications*: Protect your home from leaks, water damage, and damage from freezing temperatures. Get notifications if water is detected or if the temperature drops below freezing., East to Set Up: Just place it anywhere you want to detect water or freezing temperatures., Replaceable Battery with 2-Year Battery Life: The single replaceable battery lasts up to 2 years., Stable Connection to HomeBase: Sub-1G connectivity ensures a stable connection to HomeBase 2 or 3 all around the home and yard., One App Controls All: Links to HomeBase and the eufy Security app. Easily get notifications and check the battery status.