Pressure switch is mainly used in ventilation and air conditioning systems to control air flow in air ducts, as well as in filters, fins and fans. Suitable for air and other non-flammable and non-aggressive gases. This switch is able to sense pressure change and widely used to control the flow of the aerator, to monitor the fan and air conditioning. It is also suitable for overheat protection and frost protection in the industrial refrigeration system. With its exceptional, the set point can be adjusted visually Pressure connection: 6.2mm internal thread tube or G1/8 (optional if the hole) Electrical connection: AMP6.3mm screw terminal connector; AMP4.8mm connector Operating temperature: -30Celsius 85Celsius (overpressure 5000Pa) p Installation is simple and, both vertical and horizontal p Extremely high adjustment accuracy p Long service life and stable operation Suitable for fluid: air, non-corrosive gas. Range: 50~500Pa Accuracy: Repeatability less than +/- 1% times full scale;