The MCSN4 Presostat by Eaton is a module for controlling pressure in a variety of applications. It is a 3-pole, single-throw (3PST-NC) device that allows for the control and monitoring of pressure based on user-set ranges. The module features a simple, intuitive design and offers a variety of features, including a display monitor, wide operating temperature range, and switching capabilities. It is designed for use in harsh environments and has a solid construction that can withstand vibration and shock. The MCSN4 provides reliable, precise, and safe control over pressure, ensuring trouble-free operation in a variety of industrial applications.