Conductivity Meter, Electric Conductivity Range 0.0 micronS to 19.90 mS, Waterproof IP67, Automatic Temperature Compensation No, Displayed Temperature Range 0 Degrees to 99.5 Degrees C, Operating Temp. Range (F) 32 Degrees to 122 Degrees , Operating Temp. Range (C) 0 Degrees to 50 Degrees , Display Digital, Auto Power Off No Auto Power Off, Memory 50 Data Sets, Calibration Yes, Interface None, Cable Length 1 m, Power Source (4) LR44 Alkaline Batteries, Includes Batteries, Cable, Manual, Probe