Feature 1PH measurement range is 0.0014.00, with high accuracy, small error and convenient measurement ,which can be used at night. 2With automatic temperature compensation function, easy to use, high stability, so temperature change can't affect on pH level measurement. 3It is compact and easy to install and use, with replaceable probe, this makes them great for all continuous monitoring applications. 4It is used to measure the pH and TDS of the solution, and the pH and TDS can be easily calibrated with a small screwdriver. 5Great for student, professional and even individual used in achieving the correct pH and temperature level in water quality monitoring and analysis.Item Type: PH MeterMaterial: PlasticColor: As shown in the pictureProduct Size: Approx. 75x55x20mm / 2.95x2.17x0.79inWeight: Approx. 343g / 12.1ozRange: PH 0.00~14.00PHTemperature -50~70 (-58~158)Resolution: PH 0.01PHTemperature 0.1 (0.2)Accuracy: PH0.1PHTemperature: 1.0 (2.0)Battery: DC6V or 4xLR44 button battery (battery not included)Temperature Compensation: 0~50Working Temperature: 0~50Application: Suitable for water systems such as water sources, aquariums, hydroponics, hot springs, swimming pools, etc. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x PH Meter(Battery Not Included)1 x Probe1 x Adapter1 x Suction Cup1 x Screwdriver1 x Black Bracket1 x ManualNote1. Please allow 1‑2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.