This InSinkErator MRS-17 control center will help you save water and energy. The manual reverse of this control center helps to boost the capacity of the cutting elements by preventing unwanted jams in the disposer and keeping the disposer's grinding elements last long. It has the so-called magnetic starter that automatically shuts off the disposer in case of a power shutdown. Also, it is integrated with a 3-button switch for forward, stop, and reverse functions. This MRS-17 control center is a NEMA 4-rated unit and is constructed of stainless steel (outdoor/indoor use) to give necessary protection against particles and/or elements that can make other lower quality systems. It should be installed 1-1/2 inches (38.1 mm) back from the front surface of the table. The quality and features of this control center make it ideal to use with the SS-100 to SS-1000 Series of garbage disposers. This MRS-17 is backed by InSinkErator's 1-year parts and labor (on-site) warranty.