Feature:1. EXCELLENT PERFORMANCE: The digital differential pressure meter has high measurement accuracy and good stability, giving you a great using experience.2. MODE SWITCHING: The differential pressure gauge has 8 pressure units, 2 wind speed units and 2 density units, and can be automatically calibrated.3. LED BACKLIT DISPLAY: This instrument has backlit display function, which can be easily handled at night.4. WIDE USAGE: The digital differential pressure tester can simultaneously detect the differential pressure parameters of various gas media.5. MULTI PURPOSE: The differential pressure gauge is suitable for chemical, metallurgical, electric power, nuclear power and other industrial fields.Specification:Item Type: Differential Pressure GaugeMaterial: ABSModel: AS511BBattery: 1.5V AAA battery x 3 (without battery)Use: The differential pressure instrument is suitable for measuring the differential pressure and other parameters of various gas media in the industrial processes of chemical, metallurgical, electric power, nuclear power and other industrial sectorsBasic Parameters:Differential Pressure Measurement Range: -206.8 to 206.8KPaMaximum Bearing Pressure Range: -413.6 to 413.6KaMeasurement Rate: 0.5S.Package List:1 x Differential Pressure Gauge2 x Hose7 x Accessories1 x User Manual1 x Storage Bag