The 2-channel HART® Isolating Transducer IM33-22EX-HI/24VDC is designed to operate intrinsically safe HART® 2-wire transducers (III) in the Ex area and to transmit the measured signals to the non-Ex area. In addition to the analog signals, also the digital HART® communication signals can be transmitted bi-directionally. Alternatively, active 2-wire HART® transmitters (II) and passive 3-wire HART® transmitters (I) can be operated. The device features 0/4 to 20 mA input and output circuits. A green LED indicates operational readiness. The input signals are transmitted 1:1 without interference and made available at the outputs in the non-Ex area. The removable terminal blocks feature test sockets (2 mm Dia) for connection of a HART® handheld.