Place the Alarm Flood and Freeze Sensor on the floor or any flat surface under a sink, refrigerator or any other water source, and get alerts when water or low temperatures are detected.
Features:
Ring Alarm Flood and Freeze Sensor protects your home from flood and water damage. Get alerts on your smart phone when water or low temperatures (below 40°F / 4.4°C) are detected 
Manage Ring Alarm Flood and Freeze Sensor and other Ring products with the Ring app. 
Battery life 3 years max. Batteries are replaceable.