Portable Digital Manometer Air Pressure Meter Handheld U-type Differential Pressure Meter

--Product features: this product has 11 air pressure units with complete functions,Ability to record and view the maximum and minimum pressure values and data retention functions

--Great choice: differential pressure measurement is ideal for measuring ventilation and air conditioning systems.

--Large display with backlight: data display is clearer.

--Low-battery reminder function: with options for automatic shutdown, replacement reminder and calibration functions.