Digital PH Meter, 5 in 1 Water Quality Tester with Backlight, PH/TDS/EC/Salinity/Temp Meter with ATC, 0.01 Resolution High Accuracy Pen Type Tester, for Aquarium, Spas, Drinking

【Easy to Use】Press the power button to turn on. Tap "HOLD" to lock the value, long press "HOLD" to switch the temperature unit. Tap "MODE" to switch between different functions.;【5 in 1 Function】This is a water test kit with Ph meter, TDS meter, and EC salinity temperature test function. The backlit LCD display makes it easy to read the displayed values.;【Wide Use】 Ideal for household or laboratory use. Suitable for testing pH balance of drinking water, pool, aquarium, RO system, Spa, or hydroponics.;【Absolute precision】PH resolution is 0.01pH, accuracy ±0.05pH. TDS meter resolution 1ppm 0.1ppt, accuracy ±2%. Conductivity resolution 1uS/cm 0.1mS/CM, accuracy ±2%. Thermometer resolution 0.1℃/℉, accuracy ±0.5℃. Salinity resolution 0.01%, accuracy 0.01-5.00%(±0.1%) 5.10-25.00%(±1%);【Robust and Durable】This water quality tester is IP67 waterproof, so it can continue to be used even if it falls into the fish tank. If you have any questions, please feel free to contact us, we will be happy to solve your problems.