This XPSVNE safety module is for zero-speed detection.It meets the requirements of PL c/Category 2 conforming to EN/ISO 13849-1.and SILCL1 conforming to EN/IEC 61508 and EN/IEC 62061.Used in conjunction with XU2S single-beam photo-electric sensors (periodically tested), it establishes a category 2 light curtain conforming to IEC/EN 61496 parts 1 and 2.It has removable terminals for easier and better control wires tightening, thus improving installation reliability.It has additional solid-state output for communication with PLCs about safety status of your process.