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Phyn Smart Water Sensors detect water leaks, frozen temperatures and potentially damaging high and low humidity the moment they occur and alert you audibly, visually and with SMS and app notifications to your phone. Customize alert thresholds and settings for extended battery life. Connects via Wi-Fi to your home network.
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Don’t ever worry about leaks or floods in your basement, under your sinks, from your water heater and anywhere else around the house. Phyn Smart Water Sensors alert you audibly, visually and with SMS and app notifications to your phone the moment they detect water. Set your own alert thresholds for potentially damaging high and low humidity in the free Phyn app and customize settings to maximize battery life. Easily connects via Wi-Fi to your home network, no hubs necessary. Batteries included.

24/7 Water Leak Detection

Get alerted to water leaks, frozen temperatures and high and low humidity the moment they occur. The Phyn Water Sensor will alert you audibly, visually and with SMS and app notifications.

Perfect for the Whole House

Place sensors wherever you worry about leaks. Perfect for bathrooms, basements, attics, under sinks, near refrigerators, washing machines, dishwashers, water heaters, pumps and more.

Leak Alerts

Get notified of leaks as soon as they happen. When the Sensor comes in contact with water you get SMS, app alerts audible alarm and the device flashes its LED light.

Humidity Alerts

Set your own thresholds to protect the areas of your home that are vulnerable to potentially damaging and unhealthy high or low humidity.

Freeze Alert

Set up your own alert threshold in the free Phyn app. Take comfort knowing that you can take action to avoid damage from frozen temperatures.

Extended Protection (Node + Cable)

Phyn Smart Water Sensors are compatible with Extension Nodes and Sensor Cables to increase the area you can protect (sold separately). Target small or narrow places with the Extension Node or add up to 3 Sensor Cables to protect an entire 12 feet of length.

Compatible with Phyn Plus

Smart Water Sensors work seamlessly with the Phyn Plus. Set your Sensors to automatically turn off water at the main for additional water protection (not required for use).

At a Glance

  • Audible alarm and flashing LED alerts
  • Water detection alert via SMS and app notifications 
  • Customizable Humidity Alerts
  • Customizable Temperature alerts
  • Audible Alerts
  • Works with your existing home Wi-Fi network. No hub or subscription required
  • Monitor up to 6 devices/homes in the Phyn app
  • Free Phyn App for Android and iOS operating systems
  • Two-year limited warranty, 24/7 phone support 

Package Includes:

  • 1 Phyn Smart Water Sensor
  • 2 AA Batteries
  • Quick Start Guide

Product Dimensions

  • 88.8mm x 28.6mm


  • 0.29 lb

System Requirements

  • Wi-Fi router
  • iOS 9 or higher
  • Android 5 or higher
  • SMS text messaging

General Specifications

  • Indoor use only

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