The M800 multi-parameter transmitter provides simultaneous monitoring of one, two or four in-line sensors for measurement of pH/ORP, optical DO, amperometric oxygen (DO as well as O2 gas), conductivity and CO2, turbidity in process applications. The mixed-mode capability of the M800 1-channel allows the connection of analog or digital sensors with Intelligent Sensor Management (ISM) technology. Therefore an easy transition from conventional analog to advanced, digital ISM technology is possible at any time.