The A2-5BS-BB is a part of the SCI (Sierra Component, Inc.) catalog. It is a 5-pin, dual-in-line (DIP) switch with black actuators. This is a sub-miniature, miniature toggle switch that has a panel-mount design. It is designed for several purposes, such as switching, monitoring, and turning on and off a variety of electrical circuits. The switch has an electrical life of 1,000,000 cycles. It has also been designed to operate in temperatures ranging from -20°C to +85°C. It has a sealed construction, so it is dustproof and waterproof. These features make it suitable for use in a variety of applications, including automotive and industrial electronics, instrumentation, and medical equipment.