Features: This portable handheld penetrating PH meter is suitable for soil and food processing use, such as fruit, vegetables, jam, paste, bread, gel, some kinds of meat, and more kinds of semisolid food. It can also measure the temperature of solution, measuring temperature ranges from 0 to 50, / unit switchable for meeting various needs. Digital LCD screen with backlight, clear at a glance, easy to read even in dark environments. Powered by 2 AAA batteries (not included), auto shutdown to save energy. Alarm function: when the PH is below 3.5 or above 12.5, the red backlight lights up. When the ambient temperature is below 0, the LCD displays LO, when above 50, it displays HI. High precision detachable probes are easy to use and replace; 0-50 automatic temperature compensation ensures accurate results; data hold function for convenient reading. Specifications: Screen: Digital LCD with Backlight PH Measuring Range: 0.00-14.00 PH Accuracy: 0.05 PH Repeatability: 0.01 Solution Temperature Measuring Range: 0~50 Temperature Unit: / Switchable Temperature Compensation: Yes (0~50) Power Supply: 2 x AAA Battery (Not Included) Operating Temperature: 0~50 Operating Humidity: 85% RH Note: Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Please read the user manual carefully before use. Material: plastic colour: Black Package Contents: 1 x PH Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.