The APEM Inc. part 3CSH9 is a tactile switch designed with a round button and gull wing terminals, making it easy to integrate into PCBs using surface mount technology. It has a normally open (N.O.) single-pole, single-throw (SPST) configuration, meaning it completes the circuit when the button is pressed. With a low current rating of 0.05A and a voltage rating of 24VDC, it is suitable for a variety of low-power applications. The switch provides a tactile feedback when pressed, ensuring reliable operation. The 3N SMD model offers high-quality construction and reliable performance, making it an excellent choice for electronic devices and control panels.