Connect the Ooma Home Water Sensor to your Ooma Telo (not included) to monitor your home from anywhere. Receive app notifications and phone call, text or email alerts when moisture is detected. Manage and configure your sensor and set alerts with the Ooma Home Security mobile app. Combine with Motion and Door/Window Sensors (available separately) for complete home monitoring. Features: Perfect for basements, under sinks, and hot water heaters. Ability to call 911 remotely from your home phone number even when you are not at home if moisture is detected. Easy wireless installation anywhere in your home. Requires Ooma Telo communications device. Free companion mobile app for iOS and Android.