QBM81-50

Differential pressure switch for air or non-combustible and non-aggressive gases, mainly used in air ducts, measuring range 1000...5000 Pa, On/Off output, particularly suitable in air conditioning systems to indicate the status of a fan or a clogged filter, intervention pressure value manually adjustable with a screwdriver by operating a potentiometer with a scale located under the cover, operating temperature from -30 °C...+85 °C, IP54 protection. Supplied complete with 2 plastic probes for insertion into the duct, 4 fixing screws, 2 m of flexible tube 5/8 mm in diameter.