5 in 1 MODE: 5 in 1 PH tester, you can accurately measure TDS, EC, SALT, SG, Temp value; Clearly know the water quality to ensure the health of your family members . HIGH PRECISION: With a highly sensitive probe, you can quickly read the results; wide measuring range and high resolution ensure that you can measure different kinds of liquids AUTOMATIC TEMPERATURE COMPENSATION: With ATC function, the 5 in 1 pH meter solves the problem of inaccurate measurement caused by liquid temperature change; Easy to get reliable and stable reading EASY TO USE: After calibration, place the sensor in the solution you want to test and get the data immediately; Before another test, wash the probe thoroughly; Or you may get an inaccurate reading WIDE APPLICATION: The portable water quality tester can be carried anywhere to measure water quality such as tap water, RO system water, aquarium, l sea water, swimming pool water. MODE OF OPERATION: 1. Press ON/OF, open the instrument, remove the protective