Measures electrical conductivity (EC) and temperature. Automatic Temperature Compensation (ATC). Water-resistant housing. Measurement Range: 0–9999 µS. Digital calibration (push button), auto-off function, data-hold function, and low-battery indicator. HM Digital introduces the AquaPro series, a line of handheld EC meters with a sleek design suitable for modern use. The AquaPro digital water testers are designed for today's tech-savvy and health-conscious consumers. Display: Large and easy-to-read LCD screen with simultaneous temperature reading. Factory calibrated: The AquaPro is calibrated with a 700 µS solution. The meter can be recalibrated using digital calibration via push buttons. EC Range: 0–9999 µS (µS/cm). Temperature Range: 0–80°C; 32–176°F. Resolution: 1 µS; temperature resolution is 0.1°C. Accuracy: ±2%. Calibration: Digital calibration by push button. Housing: Water-resistant. Power source: 1 x 3V button cell (model CR2032) (battery not included). To convert µS (micro-Siemens) to mS (milli-Siemens): divide by 1000. 1000 µS equals 1 mS. EC stands for Electrical Conductivity. Note: Product labeling may vary. Slight differences in appearance or color may occur. Color: White. Material: Plastic. Package Contents: 1 x Water Quality Tester Only the above package content is included; other items are not part of the package. Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement error allowance: ±1–3 cm.