Description Features: 1. 4 in 1 water quality test: The pH meter has a three-in-one function, which can measure PH, TDS, EC and temperature at the same time. Comprehensive measurement of water quality to ensure healthy water quality. 2. High-precision water tester: PH: +/-0.01 ph; TDS/EC: +/-2%; temperature: 0.5. The backlit LCD design ensures that you can read the measurement results under any circumstances. The one-key lock reading function helps to lock the reading even if the tester is removed from the sample 3. Easy to use: After calibration, put the sensor into the solutions you want to test and get the data immediately; before another test, clean the probe carefully; or you may get inaccurate readings. 4. Wide range of applications: very suitable for home and laboratory testing applications; buy one for drinking water, beers, kombucha testing; also suitable for aquarium and hydroponic use. 5. If you have any questions, please contact us in time. Notice: 1.Actual color may be slightly different from the image due to different monitor and light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Measuring range: pH: 0.00-16.00ph; TDS: 0-19990ppm; EC: 0-19990s/cm Resolution: 0.01 ph; 1ppm; 1s/cm; 0.1C; 0.1F Accuracy: ph: +/-0.01 ph; TDS/EC: +/-2%; temperature: 0.5 Battery: 3*1.5V LR44 button battery (not included) Temperature: 0.1-60.0C; 32.0-140.0F Calibration: ph: three-point automatic calibration (6.864.009.18ph); TDS: 1413s/cm; EC: 1413s/cm Automatic shutdown: 5 minutes Gross weight: 170G Net weight: 100G Material: ABS includes: 1X 4-in-1 Digital PH Meter (Not Include Battery) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.