1、The PH gear is automatically calibrated by the button, and the error of the ORP measurement data can be easily corrected with a mini screwdriver. 2、Used in water sources, aquariums, hydroponics, laboratories, spas, swimming pools and other water systems. 3、Widely used to measure ORP/pH/temperature of solution/water, easy to use, and provide instant display results. 4、The clear LCD display with backlight can display 3 results at the same time. Long‑term online monitoring is possible. 5、The detector is equipped with temperature compensation, and the temperature can be switched between Fahrenheit and Celsius. 1 x Tester1 x PH Probe1 x ORP Probe1 x Temperature Probe2 x Suction Cup1 x Screwdriver1 x Adapter1 x Plastic Bracket1 x Instruction Manual Item Type: Water Quality TesterMaterial: PlasticColor: As shown in the picturePH Measurement Range: pH 0.00~ 14.00, temperature measurement range: 0℃~50℃ (32°F~122°F)ORP Measuring Range: 0~±1999mVResolution: pH 0.01PH, temperature: 0.1°C ( 0.2°F), ORP: 1mVAccuracy: ± 0.1pH, temperature: ± 1.0°C, ORP: ±5mVTemperature Compensation: 0°C~50°CWorking Temperature: 0°C~50°CWeight: Approx. 571g / 20.1ozHow to Use: 1.Insert the three measuring probes into the instrument. 2.Plug in the power connector. 3.Put the monitoring head into the liquid to be monitored. 4.The value can be displayed.