Further information for Phoenix Contact Phoenix 2903584 expansion module - PSR-SPP-24DC/URML4/3X1/1X2/B
1- or 2-channel contact extension for OSSD signals (e.g. light grid), 3 NO contacts, 1 NC contact, up to Cat. 4, PL e according to EN ISO 13849, SIL 3 according to EN IEC 62061, pluggable push-in terminal, width 22.5 mm