1This portable water quality detector is mainly used to measure TDS, EC and TEMP of solution. 2Support temperature measurement, in / units, can be freely switched. 3With ATC function, the measurement accuracy is high, the reaction is sensitive, and the measurement result is accurate. 4Equipped with large and clear LCD display, with backlight function, easy to read. 5The electrode probe can be replaced, easy to carry and easy to operate. 6The calibration method is simple and the pH and EC can be easily calibrated by using a miniature screwdriver. 7With automatic temperature compensation, it can be widely used in water sources, aquariums, hydroponics, hot springs, swimming pools and other water systems.1 x Water Quality Tester (Battery Not Included)1 x Instruction Manual1 x Screwdriver