The Honeywell BZ-R21-A2 Snap Action Switch features a pin plunger actuator, solder termination, and silver contacts. It is designed with an elongated mounting hole for precise and easy installation. The switch offers a wide variety of actuation options, termination types, and operating characteristics. It has a low operating force and a long mechanical lifespan of up to 20 million cycles at 95% durability. Snap action switches are highly sensitive devices that quickly open or close electrical circuits, commonly referred to as micro switches. This particular model has a current rating of 10 A and is used across numerous applications, including irrigation systems, semi-trailer trucks, timing devices, office equipment, test instruments, medical and dental equipment, HVAC systems, manually operated devices, and valves.