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 valves, manually operated devices, HVAC systems, medical and dental equipment, test instruments, timing devices, semi-trailer trucks, and irrigation systems.

DT-2RV3-A7 Snap Action Switch from Honeywell is a standard basic micro switch. This Honeywell Snap Action Switch is designed to deliver enhanced life, making it ideal for various industrial applications. It has temperature tolerance to 82 °C [180 °F]. Featuring two independent single-pole double throw contacts in one housing, this DPDT Switch offers two contacts, one for the control circuit and the other for the auxiliary circuit.