Features:_x000D_High Accuracy: This 3-in-1 water tester uses a food-grade stainless steel probe and Automatic Temperature Compensation to read the temperature instantly to ensure that the water tester reads accurately at various temperatures._x000D_Easy to use: press the switch, put the test pen into the water to be tested, the lower the value, the lower the total dissolved content in the water, and the purer the water quality_x000D_Automatic temperature compensation: automatic temperature compensation, which can ensure accuracy in the case of temperature changes._x000D_Auto Shutoff and Lockout Function: The tester has a data hold function, which locks your readings, making them easy to record._x000D_MULTI-PURPOSE: This water quality tester can help you know the water quality of drinking water, bath water, glass of salt water, swimming pool, etc. It also helps you get a clear picture of your hydroponic setup, garden soils, and more. _x000D_ _x000D_Notice:_x000D_1.Actual color may be slightly different from the image due to different light effect_x000D_2.Please allow 1-3cm deviation due to manual measurement_x000D_Description:_x000D_Size: 15.2*3cm_x000D_Battery type: 3V CR2032 button battery_x000D_Test range: 09999PPM_x000D_Conductivity test range: 0-9990US/CM_x000D_Temperature test range: 0.1C80.0C_x000D_Measurement accuracy: 2_x000D_Test items: value test, conductivity test, temperature test_x000D_Application: It is used as an inspection tool for drinking water quality in water industry, drinking water industry, family, home travel, field work, etc._x000D_Influencing factors: Water temperature: testing pens cannot be used to measure high-temperature water bodies for example: hot boiling water_x000D_Water speed: the testing pen cannot be used to measure water bodies with large sloshing_x000D_Region: Each region and city has different values due to different pipelines and water sources_x000D_Maintenance: keep the electrode clean and cover the electrode protective cover. If it is not used for a long time, please take out the batteryPackage List:_x000D_1 x Digital Water Quality Tester