[pH Meter with Bluetooth] Powered by the mobile App, professional measurement of pH, and Temp. suitable for household drinking water, hydroponics, lab, aquarium. [Cloud Based Data Management System] Precision real-time Blue tooth data transmission, the measurement value is clear. allows you to save, manage, and share your test data at your fingertips, and never have to worry about data loss. [Automatic Calibration pH Tester] With high sensitive glass probe, you can get a full measurement range of 0-14pH, 0.01 pH resolution. Compared with other pH meters, the pH is a 3-point calibration , and our pH is a 5-point calibration and equipped with a calibration powder (pH 4.00, pH 6.86, pH 9.18, and pH 7.00, pH10.01). You can calibrate effortlessly to the accuracy of your measurements. [Automatic Temperature Compensation] Temperature can affect reading levels, digital pH tester has an even better range of 0.0-60.0 (32.0-140.0), automatic temperature compensation can that you are the best reading, so you can test with confidence in any environment. [High Accuracy Water Tester] High-accuracy algorithm chip and electrode of our digital water quality tester an accurate and fast response. Green Backlit LCD Design guarantees that you can read the measuring results in any condition. One-button lock reading function helps lock reading even if the tester is taken out of the sample. Accuracy: +/- 0.5ph Temperature Range: 0.1-80, 31.2-176.0 Resolution: 0.1/0.1 Accuracy: +/- 0.5 Operation Environment: 0.1-80; RH:Max 90% Battery: 3 x 1.5V(LR44),Not include ,Low battery warning Display: LCD digital display Waterproof: IP67 colour: purple Material: plastic Size: 187x37mm Package Contents: 1 x 7 in 1 Meter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.