The Extech SDL100 pH/ORP/Temperature data logger records data on an SD card in Excel format for easy transfer to a PC for analysis. The SDL100 can manually store/recall up to 99 readings and the date/time function.

Features include dual display of pH or mV and Temperature, 3 point calibration ensures the best linearity and accuracy, date/time stamps and stores readings on an SD card, selectable data sampling rate from 1 second to 8hrs:59min:59sec, large backlit dual LCD, Min/Max and Data Hold functions, auto power off with disable function, and built-in RS-232 interface.