5 In 1 Digital PH/TDS/EC/Salinity/Temperature Water Quality Meter Tester Tool Product Feature 5 in 1 Water Quality Tester: PH, salinity, temperature measurement, TDS, EC meter five-in-one. TDS measurement range: 0-200000ppm; EC measurement range: 0-200000US/cm; PH measurement range: 0.01-14.00pH; salt water meter measurement range: 0.00-25.00%; temperature conversion function. Two Salinometers: The digital pH meter can detect the salinity of table salt; at the same time it can detect the salinity of seawater. Food salinity measurement range: 0.00-25.00%; seawater salinity measurement range: 10.1-200.0ppt. The TDS and salinity units are the same, but when measuring salinity, the pH meter needs to be converted to salinity mode. High Precision: The high-precision algorithm chip and electrodes of our detector ensure an accurate and fast response. When the measured value is stable, just press the HOLD/TEMP button to lock the measured value and take it out for viewing, which is very simple. Auto Power Off and Large Display: The tester has a backlit LCD to help you see your measurements clearly in any situation. The Auto Power Off feature turns off the power after 5 minutes of inactivity to save power. A fully transparent liquid crystal (LCD) is used to display the 4-digit value and the corresponding physical quantity unit. Automatic Temperature Compensation: Temperature may affect reading levels, digital hydroponics pH meter has a range of 0C-60C (-0-140F), automatic temperature compensation ensures you get the best readings, so you can rest assured Test in any environment. Wide Range of Applications: The detector has a variety of uses. The instrument can not only detect the salt content of edible salt, saltwater pools, and fish ponds but also detect the salinity of seawater and saltwater fish tanks, and test the pH value of drinking water, swimming pools, aquariums, etc. Package Included 1 x 5-in-1 Detector 1 x Instruction Manual 3 x Calibration powder pack 3 x 1.5V button battery