Featured with microprocessor-based design and rugged housing with splash proof keyboard. Microprocessor based large LCD display enables fast and accurate measurements. Automatic calibration enables fast measuring cycles. Easy replacement of electrode and the type of the electrode would be recognized automatically and shown on the display during insertion. Can measure and display ( depending on model ) pH & mV & temperature & conductivity & TDS & salt & dissolved oxygen in seconds. The large backlight LCD displays pH or mV or conductivity or TDS or salt or dissolved oxygen and temperature simultaneously. Offers a switchable temperature selection of °C or °F. Featured with automatic temperature compensation (ATC). Stores maximum and minimum measured values in memory. Memory function can keep and recall up to 150 data.