PH measuring range:0.00-14.00pHPH basic measurement error:±0.05pHInstrument repeatability:±0.03Solvent temperature compensation range:0-70°CRepeatability:±0.01Solvent temperature under test:0-60°CPower supply:1.5V AAA batteries*2pcs(not include)Display:Large LCD segment type displayWorking temperature range:0-50°CWorking humidity range:≤80%RHTest the pH level and temperature of solution/water with data hold function.Pocket size, lightweight and portable with switchable backlight & large LCD display for clear reading.Replaceable pH sensor probe - The electrode probe can be replaced with insert type design for convenient and fast replacement.ATC function (automatic temperature compensation), automatic calibration and IP65 fully waterproof design.Apply in water sources, soil-free growing, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems.Package List:1*PH meter1*User's guide2*PH4.00,PH6.86,PH9.18 calibration power1*BoxNotes:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow slight measuring deviation due to manual measuremen.Easy to use and provide fast measurements