ExStick pH Meter pH Range 0.00 to 14.00 Waterproof Yes Automatic Temperature Compensation Yes Displayed Temperature Range 23 to 194 Degrees F -5 to 90 Degrees C Operating Temp Range (F) 23 to 194 Degrees Operating Temp Range (C) -5 to 90 Degrees Display Dual Line LCD Auto Power Off Yes Memory Stores 15 Labeled Readings Temperature Compensation Range Yes Calibration 1 2 or 3 pt. Includes Built-in Smart Chip Predicts PH Electrode Performance with RENEW Indicator