The ZCT21P16 limit switch body is a modular core component meant to form a complete limit switch when paired with compatible actuator heads and contact blocks. It provides a 1NC+1NO contact arrangement and uses an M16 mounting interface. Key benefits Flexible signaling: 1 normally closed and 1 normally open contact in a single body for versatile wiring and logic options. Compact, standardized size: M16 mounting interface supports compact installations in confined spaces. Modular design: body can be paired with appropriate actuators and contact blocks to create a complete limit switch, allowing easier replacement of worn components without changing the entire assembly. Key attributes Functionality: limit switch body designed to accept actuator heads and contact blocks to form a complete switch. Compatibility: intended for use in standard 16 mm (M16) limit switch configurations. Size: M16 mounting interface. Material: not specified in the listing. Performance: not specified in the listing. What's included This description covers the limit switch body only. Actuator heads and contact blocks are not included. Use cases Endoftravel detection on automated conveyors to stop or index equipment. Position sensing in machine tools or robotics where a compact 16 mm body is advantageous. Integration in packaging or assembly lines to provide reliable limit sensing with independent NC and NO signaling. Notes This is the body component of a limit switch. Actuator heads and contact blocks must be sourced separately to complete a functional switch. Material and exact electrical ratings are not specified in the listing.