The OMRON A22NN-MPA-NGA-G101-NN is a robust pushbutton switch designed for industrial automation applications. Featuring a 22mm diameter and a brushed metal bezel, this non-lighted, projected switch offers a green opaque button for clear visibility. With an IP66 protection rating, it ensures reliable performance in harsh environments. The switch includes screw terminal blocks and dual normally open (NO) contacts, making it ideal for various control panel installations. Its alternate action mechanism provides user-friendly operation, making it a versatile choice for industrial control systems.