A Conductivity - Medium pressure sensor has Modbus output, voltage input of 9-24V, a current draw of 10mA and a wake time of 3s. Measurement range is -2 to 2V.
Verge water quality 4 Bar economical Conductivity sensor, with wide voltage range and Modbus RTU protocol. Provides both Conductivity (and other related parameters - TDS, Salinity) and Temperature over Modbus.