PH Meter Tester, Water With Confidence 3-in-1 Water Quality Tester Measures pH / TDS / TEMP in one unit. Water Tester pH Meter TDS Temperature 3 in 1 LCD Display Drinking Water Pool Lab etc. With the 3-in-1 PH Meter Water Quality Tester, you can accurately measure PH, TDS and temperature values. A thorough understanding of water quality can ensure the health of the family. Features: 1. Measure 3-in-1 parameters (pH / TDS / Temp) 2. Comes with a protective cap and a hard case 3. Temperature measurement °C/°F switchable 4. Automatic temperature compensation 5.Pen easy to carry 6. Easy pH and EC calibration with just a mini screwdriver 7. With green backlight function High precision electrode < p > The electrode is made of composite glass, which offers agile response and precision Sensitive button Easily switch to different modes. Read pH value, TDS value or temperature value. Auto shut-off function. Batteries included 3 batteries can be used longer. Note: Please take out the batteries