Royce Technologies Model 9100 dissolved oxygen analyzer. The supplied record lists 115/230V, 25W and 50/60Hz.The feature list below describes common Royce product-family capabilities, including TSS-related optics, communications options and self-cleaning sensors. Those features are not all confirmed for this Model 9100 unit.Confirm the exact analyzer configuration, compatible probe, outputs and calibration requirements before ordering. A sensor or current calibration certificate is not specified as included.115/230V25W50/60HZ COMMON FEATURES OF ROYCE PRODUCT Microprocessor based, self-diagnosing electronics Rugged, mil-spec electronic components One step, automatic calibration Analog and digital output communications, including multiple BUSS options Programmable setpoints and solid state relays Space age composite sensor materials Polymer, unbreakable sensor optics Color compensating optics (TSS) Self cleaning sensors throughout the line of products Intelligent, menu driven setup and operation Enclosure sun screens (Optional) Sensor fault feedback on all controllers Backlit displays