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 ideal for modern use. The AquaPro digital water testers are designed for today’s tech-savvy and health-conscious consumers. Display: Large, 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 due to ongoing product updates Color: White Material: Plastic Package Contents: 1 x Water Quality Tester Note: Other items not included. Lighting and display settings may cause slight color variations. Measurement error allowed: ±1–3 cm