... Mpa, Kpa, bar, psi, kg/cm2 Pressure gauge digital switch The VM281 Digital Pressure Gauge, using a special ASIC circuit and sensor ... life, easy to use, inexpensive, widely used on-site pressure indicator, such as pipeline networks, machinery and equipment and so on ... used in low and negative pressure measurements display)The VM281 Digital pressure Gauge is widely used in the fields of Air ...