Snap Action Switches, also known as micro switches, are switch devices that are used to open or close an electrical circuit at a rapid speed. These highly sensitive switches are often used in irrigation systems, semi-trailer trucks, timing devices, office equipment, test instruments, medical and dental equipment, HVAC systems, valves, and manually operated devices, among others.

BZ-2RQ124-A2 Snap Action Switch from Honeywell is a standard "Large Basic" micro switch. With an operating temperature range between -55 °C to 121 °C [-67 °F to 250 °F], this Honeywell Switch delivers momentary or maintained contact action. With an elongated mounting hole, it enables more accurate and easy mounting. The current rating of this SPDT switch ranges from 15 A to 25 A.