1.Fully waterproof 2.Auto turn on and off 3.Auto temperature compensation 4.No external knobs or switches 5.One-Touch Calib

Product description    The ph stick features an easy-to-read illuminated display, one-touch calibration, and Automatic Temperature Compensation (ATC). Main Features1.Fully waterproof2.Auto turn on and off 3.Auto temperature compensation4.No external knobs or switches5.One-Touch Calibration System6.Replaceable pH probe

Measuring range	2.1~10.8PH
Accuracy	±0.1PH
Resolution	0.1PH
Operating Temperature	0°C~50°C
Automatic Temperature Compensation	0°C~50°C
Batteries	3×1.5V( AA Batteries)
Dimensions	415mm x 23mm
Weight	191g

Ph stick/Ph meter