A limit switch is an electromechanical switch device which is used as part of a control system in a wide variety of applications. Limit switches act as a contact device that makes or breaks an electrical connection. This Honeywell switch is widely used in PLC Interface, packaging, presses, pulp and paper, welding, machine tools, and material handling.

LSA1A Limit Switch from Honeywell is a heavy-duty limit switch with unique all-metal drive train to deliver consistent operation even at high temperatures. This Honeywell limit switch features a wide variety of operating heads and field adjustable operating modes for reduced inventory. This micro switch is available in low temperature versions to -40 °C (-40 °F), explosion-proof versions, and completely fluorocarbon (FC) sealed versions.