Mechanical pressure switch 604

The adjustable differential pressure switch 604 has 5 pressure ranges. This series is characterized by easy mounting and has a combination bracket, screw terminals and a removable cover. The patented switching mechanism offers high accuracy and repeatability even over a very long operating time. The gold-plated contacts also ensure clean electrical switching operations. The individual factory calibration ensures a high setting accuracy for each pressure switch. The fully automated manufacturing process includes a variety of controls, which gives Type 604 a very high degree of quality and reliability.
The differential pressure switch 604 is ideal for monitoring air flows and pressures in air conditioning, ventilation and industrial ventilation systems.
More information here.