PORTABLE 4 in 1 METER pH/EC/TDS/Temp, RANGE 0.00 TO 14.00 pH, 0.0 TO 20.00 µS/cm, 0.0 TO 10.00 ppt, 0.0 TO 60.0 °C, RESOLUTION 0.01 pH, 1 mS/cm, 0.1 ppt, 0.1 °C, ACCURACY (AT 25 °C) ± 0.01 pH, ± 2% FS, ± 0.5 °C, TIPICAL EMC DEVIATION ± 0.01 pH, ± 2% FS, ± 0.5 °C, AUTOMATIC TEMPERATURE COMPENSATION, pH CALIBRATION IN 1 OR 2 POINTS WITH AUTOMATIC SAMPLE RECOGNITION, EC CALIBRATION: AUTOMATIC IN 1 POINT, SUPPLIED WITH MA851D/1 AMPLIFIED PROBE, A 9 V BATTERY