PRODUCT DESCRIPTION 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 MANUFACTURER CONTACT INFORMATION NASHUA, NH, 03063 US