Feature: The test value of the tester is reliable and the operation is simple and fast. Compact and portable pen design, easy to operate and store. Large and clear LCD, easy to read with accurate measuring functions. The tester is made of high-quality electronic components to ensure high accuracy. The resolution of the conductivity tester is 2% F.S., providing high sensitivity. Specification: Model: EC-138 Accuracy: 2% F.S. Voltage: 1.5V Measurement range: 10–1990 μS/cm Application: Measuring the conductivity of liquids Product dimensions: 150 × 29 × 15 mm / 5.9 × 1.1 × 0.6 in Weight: 115 g / 4.1 oz Package list: 1 × Conductivity Meter (battery not included) 1 × Screwdriver Note: The actual product color may differ slightly from the photo due to lighting. There may be a slight variation in the product measurement.