The SMC 2639240 D-C73 is a genuine SMC 2-wire reed auto switch, designed for reliable position sensing in pneumatic cylinders and industrial automation applications. Featuring a bright red LED indicator for easy operation status verification, this durable switch offers a maximum operating voltage of 100VAC/24VDC and a maximum load current of 50mA. Its compact design, with dimensions of 28mm length, 6mm width, and 6mm height, combined with IP67 protection, ensures robust performance in challenging environments. Ideal for precise control and feedback in various machinery.