NF-565 is a high-precision digital differential pressure gauge. The product is equipped with a hose. It can be quickly connected to the host during measurement. It is easy to operate and the reading is clear. It can measure differential pressure/negative pressure/positive pressure values. There are multiple pressure units that can be switched at will: inH20, psi, mbar, kPa, inHg, ozin?, ftH20cmH20, kgcm2, bar, mmHg. It can be used for measurement of ventilation and air conditioning systems, on-site numerical calibration, and troubleshooting of gas pressure systems.