“LD Duplex” Series Wall Mounted Controller controller for acid (pH) and a second parameter easy control with encoder wheel local and remote control options permanent data storage with system log ERMES web communication MODBUS option More “MAX 5″ Wall Mounted Controller 5 Programmable Inputs. Specify Your Requirements Selecting From:  pH, Redox, Chlorine, Chlorine Dioxide, Hydrogen … Continue reading EMEC Multi Parameter Controllers