1Multi Purpose: 7 in 1 water quality monitor is suitable for the determination of various values of water quality in drinking water, aquaculture, swimming pools, etc. 27 in 1: Water quality monitor has complete functions, can detect salinity, SG, pH, ORP and other values, and the functions can be switched at will. 3High Accuracy: The electrode of EC tester adopts Ti alloy probe, which has high measurement accuracy and accurate measurement value. 4LCD Display: ORP monitor adopts high definition display, large screen display, the value is clear and easy to read, suitable for testing needs of all walks of life. 5Small Portable: PH tester is compact in structure and light in weight, making it easy to carry and use when going out without taking up too much space.Item Type: 7 in 1 Water Quality MonitorMaterial: ABSEC:Range: 0-10000us/cm, 10.01-19.99ms/cm, 20.1-400.0ms/cm (automatic Conversion Range)Resolution: 1uS/cm;0.1mS/CMAccuracy: 2% F.STDS:Range: 0-10000ppm, 10.1-200.0ppt (automatic Conversion)Resolution: 0.1ppm; 0.1pptAccuracy: 2% F.SSalinity:Range: 0.01%-25.00%Resolution: 0.01%Accuracy: 0.01-5.00% (0.1%) 5.1-25.0% (1%)PH:Range: 0-14.00pHResolution: 0.01pHAccuracy: 0.05pHSG : 1.000-1.222ORP: 999mvTemperature Range: 0.1-60.0C 32.0-140FBattery:3 x LR44(Delivered Without Battery)Waterproof Grade: IP67Weight: Approx. 140g / 4.9oz1 x7in1WaterQualityMonitor 1 x User Manual 4 x Inspection Powder Package Shipped without battery, shipped with powder.