The 3563-1231-121 from Comus International is a high-quality magnetic reed switch with a normally open configuration. It features a 3/8" long aluminum housing that offers excellent durability and protection for the internal components. This switch is suitable for a wide range of applications due to its compact size and versatile design. The 3563-1231-121 has a switching voltage of 200V DC and a maximum switching current of 0.5A, making it ideal for use in various electronic circuits and devices. Additionally, this reed switch has a quick response time and a long operating life, ensuring reliable performance over extended periods. Overall, the 3563-1231-121 is a dependable and efficient component that is well-suited for a variety of industrial and commercial applications