Function:【pH Meter with bluetooth】Powered by mobile APP, professionally measure pH, RH and temperature. Suitable for drinks at home water, hydroponics, laboratory, aquarium. [Cloud Data Management System] accurate real-time Bluetooth data transmission, the measurement value is clear at a glance. It allows you to save, manage, and share your test data at your fingertips, never worrying about losing data again.【Automatic Calibration Tester】With the high-sensitivity glass probe, you can get a full measuring range of 0-14pH with a resolution of 0.01 pH. Compared to other pH meters, pH is 3-point calibration, our pH is 5-point calibration and comes with powder calibration (pH 4.00, pH 6.86, pH 9.18 and pH 7.00, pH10.01). You can easily calibrate to ensure the accuracy of the measurement.【Automatic Temperature Compensation】 the temperature will affect the reading level, the digital pH tester has a better range of 0.0°c-60.0°c (32.0°f-140.0°f), automatic temperature compensation can provide the best reading, so you test with confidence in any environment.【Precision Water Quality Detector】The precise algorithm chip and electrodes of our digital water quality detector ensure accurate and fast response. The green LCD display ensures that the measurements can be read in all conditions. One lock button for reading function helps lock readings even when the tester is removed from the samples. Specification:PH Range: 0.00-14.00Resolution: 0.01phAccuracy: ± 0.5phRelative Humidity Range: 1-99%Resolution: 1%RHaccuracy: le; 2%RH Working Environment: 0-80°C; 100% Relative HumidityBattery: 3*1.5V(LR44), not included, low battery warningSize: 158*33*21mm, 72g Display: LCD digital displayBacklight: APP controlTemperature: 0-60°C automatic temperature compensationpH calibration: pH: 6.86/4.00/9.18 or 7.00/4.00/10.01Package Included:1x Water Quality Tester