Testo TESTO 420

PRESSURE MANOMETER, -0.480-0.480INCH-H2O;

Humidity Min. % = 0 / Humidity Max. % = 100 / Temperature Measuring Range Min. °C = -20 / Temperature Measuring Range Max. °C = 70 / Temperature Resolution °C = 0.1 / Other Measuring Ranges = Absolute Pressure: 700 ... 1100 hPa / Other Measuring Ranges = Differential Pressure: -120 ... 120 Pa / Air Flow Rate = 40 ... 4000 m³/h / Battery Type = 4x AA / Battery Life h = 40