Q46H/64 Dissolved Ozone Monitor, 100-240 VAC, Sensor with constant head flowcellATIs Q46H 64 Dissolved Ozone Monitor provides an economical and reliable measurement system for water quality monitoring and controlling ozone treatment systems. Part No. Q46H 64 1 1 1 1 1 1 Features and Specifications Power: 100 240 VAC, + 10%, 50 60 Hz Sensor Style: Sensor with constant head flowcell and 25 ft cable Large, backlit, LCD display All systems are supplied with one package of membranes, one 120 cc bottle of electrolyte, and one spare