· 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.