[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 measurement of water quality to ensure the health of water quality. [Accurate measurement]: In order 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. [Auto power off function] The automatic power off function cuts off the power after 5 minutes without any operation to save energy. [IP67 waterproof rating] IP67 is an international waterproof and dustproof certification. Dustproof, 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.