?The XCKD2121P16 Limit Switch with Lever R 20.2mm, Plastic Roller Ø14mm; no+NC is a top-of-the-line limit switch from Schneider Electric that is designed to optimize machine reliability, safety, and productivity. This limit switch can be used in harsh environmental conditions, withstanding corrosion, dust, and extreme temperatures. It is suitable for applications where positive opening or positive closing is required, making it an ideal choice for a variety of industrial applications. The XCKD2121P16 can easily be integrated with a control/automation system for added efficiency. The electrically isolated NC and NO contacts provide improved contact life and switching accuracy, while the sturdy mechanical construction ensures long-term reliability.