Pressure switch 0,02...0,5hPa Suitable as 2-point controller, Initial setting 0,02 ... 0,5hPa, Rated voltage Ue at AC 50 Hz 12 ... 250V, Rated voltage Ue at DC 12 ... 24V, Initial value measuring range pressure 500Pa, Number of auxiliary contacts as normally open contact 0, Number of auxiliary contacts as normally closed contact 0, Number of auxiliary contacts as change-over contact 1, Type of electric connection Other, Number of normally closed contacts as main contact 0, Number of main contacts as normally open contact 0, Degree of protection (IP) IP54