The economical PRO-E3 Transmitter is easy to use with its menu-guided user interface. The NEMA 4X enclosure can be panel, wall, pipe, or integral sensor mounted. The interface is identical to GLI’s 33-series analyzers. Versatile 2, 3, or 4-wire hookup capability. Isolated 4 – 20 mA output. The transmitter is also passcode protected.