Feature:1. This test pen is ideal for measuring the pH and temperature of the solution/water.2. The PH meter has ATC (automatic temperature compensation) function and backlight LCD display.3. When the PH meter is off, the power consumption is zero, which saves power and energy.4. It has a wide range of uses and can be used to test the acidity and alkalinity of almost all liquids.5. The PH meter has good performance, high stability and accurate measurement results.Specification:Item Type: PH TesterMaterial: PlasticWeight: Approx. 119g / 4.2ozMeasuring Range: pH 0.00-14.00, temperature: 0-50 (32-122)Measurement Resolution: pH: 0.01ph, temperature: 0.1Measurement Accuracy: PH: 0.02ph, temperature: 1.0Working Temperature: 0-50 (32-122)Temperature Compensation: 0C~50C (32-122)Battery: 1 x 3V (CR2032) button battery (battery not included)How to Use: Install the battery, turn on the probe and put the probe into the liquid to be tested, and the reading can be displayed..Package List:1 x PH Tester (Battery Not Included)1 x Manual