Sends alerts to your phone whenever water is detected or the temperature drops below 4.5 degrees Celsius to keep you ahead of water damage Versatile placement options let you place the sensor near sinks, bathtubs, showers, refrigerators, freezers, washing machines, dishwashers, water heaters, water coolers, toilets, basements, and any other sources of potential leaks Download the app to receive instant push notifications regarding water leaking or low temperatures Includes 3V lithium battery Ring Alarm Security Kit required for setup (sold separately) Ring Alarm and all Ring Alarm accessories require a subscription for digital notifications, in-app features, digital arming/disarming, and integration with other Ring, Echo, and third party products. Subscription sold separately. Terms and conditions apply