STYLE: European regulations, 230-240v, British regulations, US regulations, 110-120V    Feature:       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& 8209;term online monitoring is possible.   5. The detector is equipped with temperature compensation, and the temperature can be switched between Fahrenheit and Celsius.         Specification:           Item Type: Water Quality Tester  Material: Plastic  Color: As shown in the picture  PH Measurement Range: pH 0.00~14.00, temperature measurement range: 0& 8451;~50& 8451; (32°F~122°F)  ORP Measuring Range: 0~±1999mV  Resolution: pH 0.01PH, temperature: 0.1°C (0.2°F), ORP: 1mV  Accuracy: ±0.1pH, temperature: ±1.0°C, ORP: ±5mV  Temperature Compensation: 0°C~50°C  Working Temperature: 0°C~50°C  Weight: Approx. 571g / 20.1oz    How 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.                 Package List:     1 x Tester     1 x PH Probe     1 x ORP Probe     1 x Temperature Probe     2 x Suction Cup     1 x Screwdriver     1 x Adapter     1 x Plastic Bracket     1 x Instruction Manual