1、ACCURATE AND STABLE: The digital differential pressure instrument has superior performance, high accuracy, good stability and other advantages 2、WIDE APPLICATION: The pressure differential instrument is suitable for measuring the pressure differential and other parameters of various gas media in the industrial process of chemical industry, metallurgy, electric power, nuclear power and other industrial sectors 3、POWERFUL FUNCTION: High accuracy digital display differential pressure meter, can simultaneously detect a variety of gas media differential pressure parameters 4、LED BACKLIGHT DISPLAY: The differential pressure meter has a backlight display function, which can be easily handled at night 5、MULTIPLE MODE SWITCHING: The differential pressure meter supports 8 pressure units, 2 wind speed units and 2 density units, and can be automatically calibrated Item Type: Differential Pressure Tester Model Number: AS511 Material: ABS Battery: 3 x 1.5V AAA battery(not included) Use: Suitable for measuring the pressure differential and other parameters of various gas media in the industrial process of chemical industry, metallurgy, electric power, nuclear power and other industrial sectors Basic Parameters: Pressure Difference Measurement Range: -39.98~39.98Kpa Maximum Bearing Pressure Range: -79.96~79.96Kpa Measurement Rate: 0.5S 1 x Differential Pressure Tester 2 x Hose 7 x Accessories 1 x User Manual 1 x Storage Bag