Multifunction: Use to measure the TDS EC TEMP of solution.LCD display, easy to read the displayed value.Highly efficient and accurate due to its advanced microprocessor technology.Fits for water sources, aquariums, hydroponics, spas, swimming pools and other water systems.Lightweight and portable design, convenient for indoor and outdoor use.Specification:Material: PlasticColor: WhiteSize: Approx.188x35x35mm / 7.4x1.4x1.4inMeasuring Range:EC: 0~19990us/cmTDS: 0-19990ppmTemperature: -50C-70C (-58F-158F)Resolution: EC: 10us/cm; TDS: 10ppmTemperature: 0.1C (0.2F)Accuracy:EC /TDS: 2%F.S TTemperature: 1.0C (2F)Temperature Compensation: 0 C ~ 50 CPackage Includes:1 Piece Water Quality1 Piece Small Screwdriver:Please allow slightly 0-1cm difference due to manual measurement.Colors