... of conductivity in liquids.Features: Push-button calibration, 1 point per rangeAuto-ranging capability to detect the appropriate ... 19.99, 199.9mS/cm Conductivity Accuracy ±1.5% F.S ±1% F.S±1% F.S Temperature Range------0~100.0oC Temperature Accuracy------±1oC ... , Automatic Temperature Coefficient0~3.9% per oC Cell ConstantK=0.1, 1, 10 (Adjustable) Power RequirementsDC9V, using AC adapters, 220VAC, ...