If you own a water softener, then you need an EZsalt Sensor. With an EZsalt Sensor, gone are the days of running out of salt and letting hard water flow into your home. Protect your home and water softener by ensuring that you never run out of salt again! Customize low salt alerts, see exact salt levels in real time, and even order salt delivery right from the app. The EZsalt Sensor is here to make water softener salt, "EZ".