The pressure switch is not adjustable pressure switch, usually installed in wet, dry, and the role of pre-alarm sprinkler system piping, pumps, or used to start the fire alarm and other electrical equipment. 
 Sealing test pressure (MPa): 
 Rated working pressure (MPa): 
 Operating pressure (MPa): 
 Suitable medium: water or air 
 Contact capacity: 
 Contact output: Normally open, normally closed contact of each pair 
 Connecting Thread: R1 / 2