Isolating switching amplifier. 2-channel. Ident. no.: 7541231. 2 relay outputs (NO). Output mode adjustable (NO/NC mode). Input circuits monitored for wire-break/short-circuit (ON/OFF switchable). SIL 2. Complete galvanic isolation. Input reverse-polarity protected. ATEX, IECEx, UL, CFMUS, CSA, TR CU, NEPSI, KOSHA, TIIS, CCOE, INMETRO. Installation in zone 2