Omron XCKN2118P20 and XCKN2118P20C limit switches with a thermoplastic roller lever offer reliable dualoutput sensing in a compact form. The switch uses a snapaction mechanism and provides 1 normally closed (NC) and 1 normally open (NO) contact, with an M20 mounting thread for easy integration into standard assemblies. Key benefits Dualoutput signaling: 1NC and 1NO contacts allow simultaneous feedback and safety signaling from a single switch. Reliable actuation: snapaction mechanism delivers fast, decisive switching and reduces contact chatter. Smooth actuation with a thermoplastic roller lever: the roller lever minimizes actuation force and wear, improving life in repetitive cycling. Easy installation: M20 mounting thread supports straightforward mounting in panels, enclosures, and machine frames. Compact and versatile: suitable for a range of automation and control applications where space is limited. Key attributes Models: XCKN2118P20 and XCKN2118P20C Actuator: Thermoplastic roller lever Contact configuration: 1NC + 1NO Action: Snapaction Mounting: M20 threaded body Type: Limit switch for automation environments Specifications aligned to use Actuator material: Thermoplastic (roller lever) Contact arrangement: 1 normally closed plus 1 normally open Actuation method: Snapaction switching Mounting interface: M20 Use cases Endoftravel detection on conveyor belts: the dual contact outputs provide a straightforward signal for stopping or redirecting the line when an upstream or downstream position is reached. Safety guarding and access interlock: use the NC contact for interlocking circuits and the NO contact for status signaling to integrate with machine safety controls. Position sensing in automated equipment: the roller lever actuator is suitable for machines with linear or rotary components that require reliable, repeatable position feedback in compact installations. This product description reflects the original model family XCKN2118P20 and XCKN2118P20C, including the thermoplastic roller lever, 1NC+1NO configuration, snapaction operation, and M20 mounting.