? Dual display of pH or mV and Temperature ? ATC or manual Temperature compensation ? 3 point calibration ensures the best linearity and accuracy ? Large backlit dual LCD ? Stores 99 readings manually and 20M readings via 2G SD card ? User programmable sampling rate ? Built-in PC interface ? Min/Max and Data Hold functions, Auto power off ? Complete with 6 x AA batteries, SD card, hard carrying case, sample buffers, mini pH electrode (60120B), and Thermistor temperature probe (850188)