Isolating switching amplifier. 2-channel. Ident. no.: 7541239. 2 relay outputs (changeover). Output mode adjustable (NO/NC mode). Input circuits monitored for wire-break/short-circuit (ON/OFF switchable). Common alarm output. Complete galvanic isolation. Input reverse-polarity protected. ATEX, IECEx, TR CU, INMETRO, NEPSI. Installation in zone 2