7-in-1 Water Quality Meter: RCYAGO water quality tester designed in 7-in-1 format. pH, TDS, EC, ORP, S.G, Salinity, and temperature can be measured simultaneously with high precision. The measurement range is large and wide and can measure freshwater salinity and sea salt. Omni-directional measurement of water quality to ensure the health of water quality. High Accuracy: Highly sensitive probe gives you a full measurement range of 0-14 pH, 0.01 pH resolution. The digital pH meter has a data hold function and a low battery indicator function. PH Meter with Automatic Temperature Compensation: Temperature can affect reading levels, our water meter's automatic temperature compensation can ensure that you're getting the best possible reading. Unlike other ph meters for water hydroponics that only have a range of 0 C-50 C, our ph meter for water hydroponics has an even better range of 0 C-60 C (32 F-140 F), so you can test with confidence in any environment. Automatic Power-off Function & Large Screen Display: The automatic power-off function turns off the power after 5 minutes without any operation to save power. Employs a fully transparent liquid crystal (LCD) to display 4-digit values and the corresponding physical quantity units. PH Tester with Wide Application: Pocket-sized and multi-functional, Ideal for household and laboratory pH testing applications, including drinking water, swimming pool, pond, beer brewing, kombucha, aquariums, hydroponics, laboratory, food processing, etc.