Description3-in-1 Water Quality TesterTDS Meter, EC Meter and Thermometer. You can use the mini water quality pen to test water used for drinking, hydroponics or filling your fish tank.Auto-off 0026 Auto-lock Function Turn off meter after 5 minutes of non-use to save battery, the LCD display can record measurements.Super convenientAutomatic temperature compensation function when the meter is in measurement mode.Saving PowerPowered by 1 x 3V CR2032 battery (not included), which can continuously work about 1000 hours.UsageYou can switch between TDS and conductivity by clicking the SHIFT button. Press and hold the SHIFT key twice to toggle between Celsius and Fahrenheit. Powered by 1 pc 3V CR2032 battery (not included), which can work continuously for more than 1000 hours.Product Description3 in 1 Digital LCD Water Tester Tester of water qualityHealthy waterProduct detailsScenes to useIt can recognize drinking water, industrial water, industrial water and breeding water.Professional safety barrier, good health and happier lifeFeatures:Type: Handheld Water Quality TesterAccuracy: 2%Test Item: TDS, EC, TemperatureTDS : 0 ~ 9990PPmCE: 0 ~ 9990 us/cmTemperature measurement range: 0.1 ~ 80.0Fahrenheit: 32, 0~176.0Power supply: CR2032 battery (3V) X 1 (not included)Size: approx. 3cm x 15.5cm x 1.4cm / 1.1 x 6.1 x 0.5inchPackage weight: about 60gCE value at indicativeDrinking pure water: EC = 1 ~ 10 s/cmDrinking water: EC 2000 s/cmPolluted water: EC 2000 s/cmTDS range 0026 amp; Standard for reference only0~49 Ideal drinking water50~99 mineral water100~199 hard water200~ 399 Reluctantly acceptable water400~499 bad water500 polluted water as specified by US EPAPackage includes:1 X Water Quality Tester (without battery)1 X User ManualNote:Keep the electrode clean, cover the electrode protective sleeve, remove the battery for a long time at idle.Above Reference Value Range is just for your reference, depends on different requirements, the reference value may be different for people in different countries or regions.Please read the instruction manual carefully before use.