The 83873103 is a compact prewired limit switch featuring a steel roller lever actuator with two directions of attack capability. It incorporates positive opening operation with a four-terminal double break two-way contact element (form 2b) and snap-action contacts, providing reliable switching performance. The device operates with a maximum operating force of 0.15 N·m, maximum total travel force of 0.35 N·m, and minimum positive opening force of 0.3 N·m, with a mechanical life rating of 107 operations. It is housed in a metal case with EN size conformity, offers IP66/IP67/IP69 protection rating (IK07), and operates across a temperature range of -25°C to +70°C. The switch is UL approved, complies with IEC/EN 60947.5.1 standards, and is suitable for harsh industrial environments requiring robust position sensing and control in machinery, automation systems, and safety-critical applications.