Ring Alarm Flood & Freeze Sensor 4SF1S8-0EN0

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Place Sensors near water sources at home to stay ahead of potential leaks and frozen pipes. You’ll receive notifications when water is detected or when the temperature drops below 40°F, and if you’re signed up for professional monitoring, we’ll give you an automated call to let you know there’s an issue.

  • Requires the Ring Alarm Security Kit
  • Sends mobile and email notifications
  • Place near sinks, bathtubs, showers, refrigerators, water heaters, water coolers, toilets, basements and any other sources of potential leaks


Dimensions 2.95 in. Diameter; 1.06 in. Height (7.5 cm. Diameter; 2.7 cm. Height)

Battery 3V Lithium Battery Included
Battery Life Max 3 Years
Connectivity Z-Wave (up to 250-foot range to Base Station)

Operating Conditions 32°F to 120°F (0°C to 49°C)