[5 in 1 Water Quality Test] The pH meter is designed with a 4 in 1 function, which can simultaneously measure PH, TDS, EC, salinity and temperature with high accuracy. Omnidirectional water quality measurement to ensure water quality health. [Accurate Measurement]: To achieve high accuracy, it is equipped with a high-quality titanium alloy probe and reliable automatic temperature compensation (ATC), which can ensure accurate readings at different temperatures. [Automatic Shut-off Function] The automatic shut-off function turns off the power after 5 minutes without any operation to save energy. [IP67 Waterproof Rating] IP67 is an international waterproof and dustproof certification. Protection against dust ingress, short-term immersion. [Wide Range of Applications]: This water quality detector is ideal for testing water, swimming pools, aquariums, spas, hydroponics, laboratory and drinking water, etc.