Features: 1Custom Range: The PH tester can set the maximum or minimum limit of PH/EC/ORP according to user requirements. If the test result is out of range, the value of The PH tester will be displayed in red 2Backlight Display: The PH tester supports mobile phone wireless connection version 5.2, with backlight, supports mobile phone control 3Highly Sensitive Electrode Tip: The PH tester has a highly sensitive electrode tip, probe insertion design, removable and replaceable 4Automatic Data Storage: Test data can be automatically stored and shared, the saved data can be exported to Excel, and can also be shared with your friends 5Simultaneous Display of Data: Just immerse the electrode in the solution to be tested, the data will be synchronized to the mobile APP, and multiple data will be displayed at the same time, without frequent operation to view the data Item Type: PH Tester Material: ABS PH Range: 0.00-14.00 pH Resolution: 0.01 pH Accuracy: 0.05 pH EC Range: 0-9990uS/cm, 10.01-19.99 mS/cm, 20.1-200.0 mS/cm Resolution: 1us/cm, 0.01mS/cm 0.1ms/cm Accuracy: 2% F.S Total Dissolved Concentration Range: 0-999ppm 1000-9990ppn 10.1-100.0 ppt Resolution: 1 ppm 10ppm 0.1ppt Accuracy: 2% F.S Salt Range: 0.01-25.00 % 0-999 ppm 1000-9990 ppm 10.1-100.0 ppt Resolution: 0.01 % 1ppm, 10ppm 0.1ppt Accuracy: 2% F.S S.G Range: 1.000-1.222 ORP Range: -1200mV to +1200mV Resolution: 1 mV Accuracy: 4 mV Temp Range: 0.1C-60.0C: 32.1F-140,0F Resolution: 0.1C:0.1F Accuracy: 0.5 Calibration PH: 6.86/4.00/9.18 or 7.00/4.00/10.01 EC/Total Dissolved Concentration/Salt: 1413uS/cm 12.88 mS/cm 111.8 mS/cm ORP: 256mV Battery: 3 x LR44 Button Battery (Battery Not Included) Product Size: Approx. 187 x 37 x 37mm / 7.4 x 1.5 x 1.5in Mobile Phone Control: Support Backlight: Support BT Version: Mobile Phone BT5.2 Version Application: Widely Used in Drinking Water, Sewage Treatment, Water Purification, Fish Tank, Aquaculture, Swimming Pool, Hydroponics, Medicine Treatment, Etc. Weight: Approx. 160g / 5.6oz 1 x PH&nbspTester (Battery Not Included) 1 x User Manual