Features1Wireless 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, detachableSpecificationItem 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: 0.1 DegreeC-60.0 DegreeC 32.1 DegreeF-140.0 DegreeF, 0.1 DegreeC/0.1 DegreeF, 0.5 DegreeCCalibration: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 / 5.9ozPackage List1 x PH Tester 1 x Cover 1 x User Manual