Features： 1、12 Units: The differential pressure gauge has 12 selectable measurement units, which are Pa, Psi, kgfcm2, bar, inH2O, ftH2O, inHg, mmHg, ozin2, mbar, cmH2O, kPa. 2、Multi Function: The meter has maximum, minimum, average data mode, with data storage function, o return and data compensation, low battery alarm, automatic shutdown function, very practical and useful. 3、Large LCD Display: Equipped with a large LCD display with backlit function, can be clearly seen even in dim environment. 4、High Strength ABS Shell: The shell of the meter is made of ABS material, which has high strength and good durability. 5、Easy Storage and Carrying: Equipped with a storage holster, easy to store and carry, convenient to use when going out to work. Specification： Item Type: Digital Manometer Material: ABS Pressure Range: ±2.000 Psi Measurement Units: Pa, Psi, kgfcm2, bar, inH2O, ftH2O, inHg, mmHg, ozin2, mbar, cmH2O, kPa Accuracy: ±0.3% FSO(25℃) Repeatability: ±0.2% (Wireless Optical Communication Maximum ±0.5%) Wireless Optical Communication Linearity or Hysteresis: ±0.29% Data Storage: 99 Groups Response Time: 0.5 Seconds Out of Range Indicator: Hi or Lo Automatic Shutdown Conditions: 10 Minutes Without Operation Operating Environment: 0℃ to 50℃ Storage Conditions: -10℃ to 60°C Model: 3 x 1.5V AAA battery (not included) Package List： 1 x Digital Manometer 2 x Hose 1 x Connector Accessory 1 x Holster 1 x Manual