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 very often used in aerospace, appliances, vending machines, timing devices, office equipment, computer and business equipment, test instruments, HVAC systems, manually operated devices, and valves, among others.

311SX4-T Snap Action Switch from Honeywell is a subminiature basic micro switch. With an elongated mounting hole, this Honeywell Switch enables more accurate and easier mounting. It has an operating temperature between -55 °C to 125 °C and delivers reliable performance and are used for simple or precision application needs. This Miniature Snap Action Switch comes with a choice of actuation and operating characteristics to provide design flexibility.