Milwaukee conductivity meter MW301 PRO is a robust conductivity meter (EC) with automatic temperature compensation for daily use. The large measuring range up to 1990S/cm and the long probe cable make the device an indispensable aid for aquarists, breeders and professional users.Milwaukee Conductivity Meter MW301 PRO+ fast easy to read results with large digital LCD readout+ accurate to +/- 2%+ measuring range: 0 to 1990S/cm+ resolution: 1S/cm+ temperature compensation: automatic from 5 to 50C+ lightweight and portable+ aasy measurement: just place the probe in the sample, gently stir and wait for the reading to stabilize+ simple manual calibration for increased accuracy+ conductivity electrode (SE501) included+ dimensions: 143 x 80 x 32 mm+ 3.3 feet probe cables for extra flexibility when testing+ auto shut off and low power demand for approx. 300 hours of continuous use+ battery, calibration fluid and screw driver included