DescriptionPackage include1 X Water Quality Tester1 X User Manual1 X Free Leather BagFeatures:1.This is a digital TDS meter tester to test the filter water quality purity，to check the performance of your water filter， to check for hardness (1grain=17ppm)，to make sure you always drink pure water.Saves measurements for convenient reading and recording New Arrival2.Auto-off function: turns off meter after 5 minutes of non-use to conserve batteries3.Automatic temperature compensation4.Shift between TDS and Conductivity5.Can be used in : Water purifiers and filters， food(vegetable ， fruit)&drink qualitymonitoring， pools and spas， aquarium， hydroponicsSpecifications:1.Measurement range:EC:0¡ª9990Ous/cm; TDS:0-9990ppm; Dearees Celsius: 0.1-80.0Celsius; Fahrenheut:32.0-176.0 Accuracy: ¡À2%2.Size: 154mm*30mm*14mm3，Color: WhiteHow to use it:1.Please unplug the electrode sleeve before use2.Press the switch ，place the electrode into the testsolution.3.After the numerically stable ，press the HOLD button andtake it out of the solution to read.4.After reading ，turn off the meter ，wipe clean the electrodebefore sleeving it.Note:1.keep the electrode clean ，cover the electrode protectivesleeve ，please take out the batteries for long periods idle.2.This product requires a 3V CR2032 button battery， but Wedo not provide it，please kindly note.