5 in 1 Water Quality TesterThe pH meter is designed with 5 in 1 function, which can measure PH, TDS, EC, salinity and temperature simultaneously with high accuracy. Omnidirectional water quality measurement to ensure the health of water quality. Precise measurement: In order to achieve high accuracy, it is equipped with high quality titanium alloy probe and reliable automatic temperature compensation (ATC), which can ensure accurate reading at different temperatures. When the value measured is stable, long press the HOLD/TEMP button to lock the measured value and take it out to view, which is really easy. Auto-off function and large screenThe PH tester has a backlit LCD display that allows you to clearly see the measurement in any case. The auto shut-off feature turns the device off after 5 minutes of inactivity to save energy. Uses a fully transparent liquid crystal (LCD) to display 4-digit values and their corresponding physical units of measurement. IP67 Waterproof RatingIP67 is an international water and dust proof certification . Protection against dust intrusion, short-term immersion. Wide range of uses: This water quality detector is ideal for testing water, swimming pools, aquariums, spas, hydroponics, laboratory and drinking water etc. Number of pieces supplied: 1 TDS measuring range: 0-1000 ppm CE measurement range: 0-10000US/cm pH measurement range: 0.01-14.00 pH Salinity measurement range: 0.00-25.00% Seawater salinity measurement range: 10.1-200.0ppt. Accuracy: 0.01-5.00% (0.1%) 5.01-25.00% (1%) Display Size: 33*24mm