【10 in 1 Multifunction Salt Meter】 professional measurement of PH, EC, TDS, ORP, H2, MΩ, Fertility, SALT, S.G. Temp. suitable for household drinking water, food, swimming pool, lab, and aquarium. 【HD Large Screen Displdy】Large screen display with backlight, clear value, easy to read, suitable for the needs of pH test in all walks of life 【Large-capacity Battery】 Use 3*1.5V(LR44) battery to provide power, be , and be easy to replace, You can be bought everywhere. 【High-precision Probe】 With high sensitive probe, can avoid the interference of the magnetic field in the water, reduce errors, and effectively prevent the damage of the probes during transportation. 【Automatic Temperature Compensation】 Temperature can affect reading levels, this tester has automatic temperature compensation of 0°C-60 °C can ensure that your measure is correct.