The digital differential pressure gauge uses imported differential pressure sensors as pressure sensing components, combined with ultra-low power digital conditioning circuits, making it highly accurate and stable in the long term. The installation method is the same as that of mechanical differential pressure gauges, which facilitates on-site installation and debugging by engineering personnel. This series of micro differential pressure gauges can be used for high-precision measurement and control of micro differential pressure in clean rooms, operating rooms, clean rooms, ventilation systems, fan testing, etc.