[5 in 1 Water Quality Test] The 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. [Accurate 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. [Auto power off function] The auto power off function cuts off the power after 5 minutes without any operation to save energy. [IP67 waterproof rating] IP67 is an international waterproof certification water and dust. 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. Product parameters Conductivity test range: 0-10,000uS/cm 10.01-19.99ms 20.1-400mS/CM