The GeneralAire 7081 water savor controller was specifically designed to help conserve water, while using a Humidifier, and has been proven to save as much as 96% of normal water use. Six individual settings allow the user to adjust the settings without affecting humidifier output. Regardless of the humidifier brand you are using, the application of this Water Savor Controller will reduce water waste, and in turn save you money and help to preserve the environment at the same time. Rather than leaving a constant flow of water running therough the humidifier to moisten the vapor pad, the GeneralAire 7081 automatically powers on when the demand for humidity is met. thus allowing water flow to continue. The Vapor pad is still adequately saturated yet very little water is going to be going down the drain in the short amount of time it takes to soak the pad. Though simple to connect, and easy to use a power source is required to run the Water Savor Controller.