Telemecanique OsiSense XCKN Limit Switches Telemecanique OsiSense XCKN series limit switches are a compact design with a wide variety of actuator heads available. The XCKN series is a monolithic plastic limit switch dedicated to repetitive action. Features and Benefits Snap action contacts with positive opening operation -25 to +70°C operating temperature Protected to IP66 Plastic body Telemecanique, Square D & Crouzet