3 in 1 PH/we/temperature tester high accuracy digital meter 0.01 0-14pH water quality range automatic calibration for aquariums Technical data: Measuring range: pH:0.00-14.00 pH; EC: 0-19990S/cm Resolution: 0.01 pH; 1 S/cm; 0.1 ; 0.1f Accuracy: pH: /-0.01 pH; EC: /-2%; Temp: 0.5 Temp. : 0.1-60.0 ; 32.0-140.0 f Automatic shutdown: 5 minutes Dimensions: 7.2*1.45*1.45 inches Net Weight: 2.82 ounces Product Features Accurate and reliable: In order to achieve high accuracy, equipped with high-quality titanium alloy probe, and reliable automatic temperature compensation (ATC) ensures reading always be accurate at different temperatures. Easy and instant: just turn on the PH meter and gently mix the water, then the stabilized readings will be shown on the LCD display in seconds, and the tds ppm meter will turn off automatically if without working for 5 minutes. Hold function and auto-off function: freeze the measurement to display it from the water. Turns off the meter after 5 minutes of non-use to save battery. Wide application: The pocket size TDS PH Meter is the ideal test kit for home and laboratory applications. Ideal for testing water, swimming pools, aquariums, spa, hydroponics, food, wine and beer and more. Make you satisfied Prodcuts: come with 1x YINMIK PH Meter, 1x User Manual, 3x Buffer PH Powders Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.