LG 5928Performance Level (PL) e and Category 4 according to EN ISO 13849-1, SIL claim limit (SIL CL) 3 according to IEC/EN 62061, 1- or 2-channel wiring, LED displays for mains, channel 1/2 and for time delay, line short detection on the on button, 2 NO contacts as instantaneous contacts, 1 delayed-release contact, width 22.5 mm