Temperature measuring amplifier, 1-channel, operating voltage 20,250 VAC / 20,125 VDC, input circuit for Pt100/Ni100 resistors, thermocouples and millivolt signals in 2-, 3- or 4-wire technology, output circuit: 0/4...20 mA, measuring range start and end adjustable via rotary coding switch, all-round galvanic isolation, input protected against reverse polarity, ATEX, IECEx, CFMUS, UL, TR CU, INMETRO, CCOE, Nepsi, Kosha, use in zone 2