Envytech systems offers multi parameter two wire transmitter. Shark is a 1/4 din and din rail mountable two-wire transmitter that allows the user to select one of four measuring parameters. Select the parameter you wish to measure from the easy-to-use lcd menu from the easy-to-use lcd menu on the front cover. Choose conductivity, ph, orp or flow. No extra cards/options are required: each shark comes complete. There are no extra costs associated with buying boards for different applications. Display is through a 2-line, 16-character lcd on the front panel. Shark provides one isolated, independent, and fully scalable 4-20ma output.: sharktx is packaged in a rugged nema 4x polycarbonate enclosure making it ideally suited for heavy-duty applications such as industrial wastewater neutralization, municipal water and wastewater, pulp and paper, and process control. The sharktxp enclosure is also polycarbonate with a nema 4x front panel, and din rail mounting hardware on the back.