Isolating switching amplifier, 2-channel, operating voltage 10.30 VDC, two relay outputs (changeover contact), switchable: two-channel or signal doubling, direction of action adjustable (working/quiescent current behavior), monitoring of the input circuits for wire breakage and short circuit (can be switched on/off), all-round galvanic isolation, input protected against reverse polarity, removable screw terminals, ATEX, IECEx, NEPSI, cUL, cFM, INMETRO, Kosha, TIIS, DNV, GL, use in zone 2, SIL 2