These top-of-the-line waterproof meters offer single or multiparameter measurement capabilities to meet all of your testing needs. The IP67-rated housing allows use in dirty and wet environments without harm to the meter. Store up to 500 data points with manual or auto datalogging and download to computer or printer with the infrared (IrDA) wireless technology no need for additional cords. User-selectable "calibration due" and set point alarms, automatic or manual standards recognition, and single- or multiple-point calibration provide flexibility in meeting your data quality objectives. The large, backlit graphic LCD shows the measured value and units, temperature, time, battery life, and menu options.