Feature 1Wireless Connection: The PH tester supports BT connection, multifunctional 4 in 1 can measure PH, EC, TEMP values 2Full Screen Display: The PH tester can display in full screen, turn on BT, open the mobile APP, which is controlled by the mobile phone intelligently, without key operation 3Mobile APP Synchronization: Just immerse the PH tester in the solution to be tested, and the data will be synchronized to the mobile APP and multiple data will be displayed at the same time 4Convenient and Practical: The PH tester is convenient and practical, and does not require frequent operation to view data 5Highly Sensitive Electrode: The PH tester adopts highly sensitive glass electrode, anti rust electrode, detachableItem Type: PH TesterMaterial: ABSProduct Size: Approx. 187 x 37mm / 7.4 x 1.5inPH: 0.00-14.00, 0.01, 0.05pHTotal Dissolved Concentration: 0-999ppm 1000-9990ppm, 1ppm, 2%F.S.EC: 0-9999S/cm; 10.01-19.99mS/cm, 1S/cm; 0.01mS/cm, 2%F.S.TEMP: 0.1C-60.0C 32.1F-140.0F, 0.1C/0.1F, 0.5CCalibration:PH: 4.00--6.86--9.18/4.00--7.00--10.01EC: 1413s/cm; 12.88ms/cmBattery: 3 x 1.5V LR44 (shipped without battery)Temperature Compensation Range: Automatic (0.1-60)BT: BT Version 5.2Backlight: Mobile Phone Controls The BacklightWidely Used: in Drinking Water, Sewage Treatment, Water Purification, Fish Tanks, Breeding, Swimming Pools, Hydroponics, Medicine Treatment, Etc.Weight: Approx. 167g / 5.9oz .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x PHTester1 x Cover1 x User ManualNoteShipped Without Powder Test PackageShip Without Battery