Real-time data logger with integrated SD memory card (optional) measures/records pH and ORP levels in water with manual or automatic temperature compensation. Kit includes R3000SD Data Logging pH/ORP Meter, R3000SD-PH2 pH Electrode and R3000SD-ORP ORP Electrode. The R3000SD is capable of measuring 0.00 to 14.00 pH and 0 to 1999 mV (ORP). Featuring automatic temperature compensation, Data hold, Max/Min functions and an easy-to-read backlit LCD display. Using a SD card (max 16GB), a user can manually record up to 99 readings or automatically by selecting a desired sampling rate from 1 to 3600 seconds. Quickly generate an Excel file with raw data, all without the use of software. Optional accessories include a tripod and AC adapter for continuous long-term monitoring.