<p> The SX series 412SX21-T Honeywell subminiature basic micro switches are used for simple or precision on/off application needs. A Snap Action Switch is a type of momentary contact micro switch which operates at rapid speed as it takes very little force or stimulus to operate. These small, precision snap-action switches are ideal in places where savings in space and weight are important and are mostly used in aerospace, appliances, computer/business equipment, test instruments, timing devices, medical and dental equipment , vending machines, HVAC equipment, office equipment, manually operated devices and valves. </p><p>This Honeywell Switch comes with a choice of actuation, electrical termination and operating characteristics. The 412SX21-T has a log operating life and features elongated mounting hole for easier and more accurate mounting.</p>