Check the listing for details. HM Digital EC-3 Conductivity Tester/Meter/Thermometer. Condition: New. Listed at 17.99 USD. HM Digital EC-3 Conductivity Tester, with Case Authorized Distributor - Brand New Meter with 3-Years USA Manufacturer Warranty *** Check out more HM Digital Products (Click Here) *** Check out more Calibration Solutons (Click Here) Specifications EC Range: 0 - 9990 µS (µS/cm) Temp. Range: 0 - 80 degrees Celsius Resolution: 0-999: 1 µS; 1000-9990: 10 µS (indicated by a 'x10' icon) Temperature Resolution: 0.1 degree Celsius (Celsius only) Accuracy: +/- 2% ATC: Built-in sensor for Automatic Temperature Compensation of 1 to 50o C (33 to 122o F) Power source: 2 x 1.5V button cell batteries (included) (LR44 or equivalent) Battery life: 1000 hours of usage Dimensions: 15.5 x 3.1 x 2.3cm (6.1 x 1.25 x 1 inches) Weight with case: 76.5g (2.7 oz) Weight without case: 56.7g (2 oz) To convert µS (micro-Siemens) to mS (milli-Siemens): divide by 1000. 1000 µS = 1 mS EC = Electrical Conductivity