N series pressure switch with bellows for sensing components, used to control the neutral gas and liquid pressure. Pressure switch settings are adjustable. N2 as pressure switches, N3 for the differential pressure switch, N4 is the differential pressure switch. Excellent price, warranty 3 years 

 Technical performance 
 Switching elements: SPDT (1 × 2) Fast switching 220V/10-15A 
 Repeatability error: 1% 
 Switching accuracy: 3% 
 Pressure: 150% 
 Life: 100 million, or 5-10 years 
 Set point set by: dead zone settings do not have adjustable gauge plate. Adjustable dead zone has the light of the scale dial. 
 Ambient temperature: -40-90 ℃ 
 Medium temperature: -40-150 ℃ 
 Media: copper or stainless steel is compatible with the media 
 Connection thread: G1 / 4 "female connection, or transfer into other 
 Installation position: vertical horizontal 
 Protection Standard: IP65 
 Explosion-proof grade: d Ⅱ BT4 
 Shell material: Aluminum