A Kant pressure switch Type 909, also called pressure transducer, has an integrated pneumatic valve. When pressure is applied, a diaphragm is deformed or a piston is displaced via a lifting movement. The deformation or movement depends on an adjustable spring preload. When the switching point is reached, the diaphragm or piston has undergone a defined movement which actuates the pneumatic valve and releases the pneumatic pressure. A pneumatic function can be monitored via the pressure transducer.