QBM81-5

Differential pressure switch for air or non-combustible, non-aggressive gases, primarily used in air ducts, measuring range 50...500 Pa, On/Off output, particularly suitable for air conditioning systems to indicate the status of a fan or a clogged filter, activation pressure value manually adjustable with a screwdriver by operating a potentiometer with a scale located under the cover, operating temperature from -30 °C to +85 °C, IP54 protection. Supplied with 2 plastic probes for duct insertion, 4 fixing screws, 2 m of flexible hose with 5/8 mm diameter.