Four Wire Signal Isolator acts as signal distributors and is compatible with both 2 wire and 4 wire transmitters and has built in transmitter power supply to power 2 wire field transmitters. The Isolator offers a wide range of input/ output signal types which includes MA, MV, VDC and it offers accuracy and stability for reliable operation in hostile environment and offers full 3 port isolation between input, output and power supply. The Isolator has wide zero and span adjustment limits and compact din rail enclosure and has long term stability. The Isolator has the feature that each channel zero and span calibration is adjustable by multi turn potentiometers and the unit can accept a wide range of aux power from 90 to 265V AC or 18 to 36 V DC. The Four Wire Signal Isolator is rugged and accurate has three port isolation and up to 4 out puts of different types available.