CX-411-Z - 

The CX-400 series of photoelectric sensors is a wide-ranging lineup of 116 different models. Whatever your application entails, Panasonic has covered it with this series. Built to IP-67 standards, the CX-400 series is designed for the most demanding environments.
There are also models that are specifically design for resistance to oil, coolant, or ethanol. Couple this with high electrical noise resistance and a built in interference prevention function, and you have one of the most robust sensors on the market.

Features:

Incorporated Acrylic that Strongly Resists Oils and Coolants

Reductions in Power Consumption Up to 60%

Resistance to High-Frequency Noise Has Increased

Stronger Output Short-Circuit Resistance

Unique Optics and Specialized Electronic Circuit Design Allows Sensing to 0.016 In.