This pressure switch is mainly used in ventilation and conditioning systems to control the flow in the ducts, as well as in filters, ailerons and fans. They are suitable for 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 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: , non-corrosive gas. Range: 50~500Pa Accuracy : Repeatability Less than +/- 1% times full scale; Service life : Greater than 106 switching cycles size: 81 x 53mm Material: plastic colour: grey Package Contents:2 x - differential pressure switch Only the above package content, other products are not included. Note: Light reflection 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. all Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. we Will Give You The Best Solution.