Features Automatic (up to 4 points) and manual (up to 5 points) conductivity calibration Adjustable reference temperature and temperature coefficient Adjustable cell constant and selectable measurement unit Automatic / manual temperature compensation and temperature calibration function Conductivity and total dissolved solids (TDS) conversion Four (4) TDS calibration curves for wide range of applications: EN27888, Linear, 442, NaCl Two (2) salinity calibration curves: NaCl, Seawater °C amp; °F temperature readings Auto log data; built-in memory can store up to 500 data Auto stable, auto hold, and real-time measurement modes Auto shut-off (programmable: up to 30 minutes) Monochrome LCD with white LED backlight: 50 x 50 mm Powered by 2 x AA batteries Casing is IP67 waterproof/dustproof, shock amp; scratch resistant, non-slip Packaged with electrode and calibration solutions in carrying case Package Details: LAQUA EC210 Cond/TDS/Res/Sal/Temp meter 2 x AA batteries Manual and quick guide 9383-10D plastic-body, Ti/Pt black conductivity probe (k=1.0) with integrated temperature sensor 84 µS/cm, 1413 µS/cm, 12.88 mS/cm, 111.8 mS/cm conductivity standard solutions (60ml each) Carrying case