This pressure switch is mainly used in ventilation and air conditioning systems to control the air flow in the air ducts, as well as in filters, ailerons and fans. They are suitable for air and other non-flammable and non-aggressive gases.This switch is capable of feeling a small change of pressure and widely used to control aerator flow, to monitor and fan and air conditioning. It is also suitable for protection against overheating and frost protection in the industrial refrigeration system. Due to its exceptional design, the set point can be adjusted visuallyPressure connection: 6.2mm Internal thread tube or G1 / 8 (optional if the hole)Electrical connection: screw terminals AMP6.3mm connector; AMP4.8mm connectorOperating temperature: -30Celsius 85Celsius (overpressure 5000 Pa)p Installation is quick and easy, both vertical and horizontalp extremely high adjustment accuracyp long life and stable operationSuitable for medium: air, non-corrosive gas.Range: 20-200PaAccuracy : Repeatability < +/- 1% times full scale;Service life : > 106 switching cyclescolour:GrayMaterial:plasticsize:81*53mmPackage Contents:1*- differential pressure switchOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.