<p>Snap action switches are highly sensitive switches that respond to very small movements and can rapidly change from one contact position to the other and are therefore mostly used in computer/business equipment, test instruments, medical/dental equipment, communications equipment, HVAC equipment, manually operated devices and valves.</p><p>111SM23-T Snap Action Switch from Honeywell comes with long operating life, elongated mounting hole for easier, more accurate mounting and choice of actuation (plunger, as well as a variety of integral and auxiliary actuators).</p>