[Smart pH Meter with Bluetooth]Professional measurement pH, TDS(), EC(Conductivity), ORP, S.G, Salinity(ppt), and Temp. suitable for household drinking water hardness test, hydroponics, lab, aquariums water quality measures. It can be used as a classic water quality tester even if it is not connected to a smartphone. [Cloud-Based Data Management System]Accurate real-time Bluetooth data transmission and clear measured values easy to save, manage and share test data without worrying about data loss. [Automatic Calibration pH Tester]With high sensitive PH sensor, 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 , you can calibrate effortlessly to the accuracy of your measurements. [7 in 1 analyzer Information Display]Simply immerse the pH meter sensor in the solution to be tested, readings are quickly displayed on a LCD display. multi-parameter display at the same time, mobile phone APP control backlight display. [Multifunction Salinity meter]Salinity tester measure Range is 0-10000ppm, Saltwater tester has an automatic temperature compensation function(32F~140F), which can decrease the error caused by the change of liquid temperature. [Easy to Use]Digital pH meter fully customizable parameter settings. the App can set the upper and lower limits of pH, which can be set according to your needs. when the value you set exceeds the test range, the App interface will display a red value abnormally, notifying you of any values exceeding your preset range. Colour:As Shown Material:ABS Package Contents: 1 X Bluetooth C600 gravity water quality pen Only the above package content, other products are not included. Note: Light reflection 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.