The Grayhill 51M30-01-2-03N is a robust rotary keylock switch assembly engineered for demanding industrial applications requiring secure access control. Its mechanical design ensures durability and reliable operation. Commonly used in equipment enclosures, access panels, and other applications where restricted access is critical, this keylock provides a physical barrier against unauthorized use. The RoHS compliance indicates adherence to environmental standards, making it suitable for a wide range of modern industrial environments. It is currently an active part in Grayhill’s product line.